In lieu of an abstract, here is a brief excerpt of the content:Vertical Transmission:The Patient, the Student, the TeacherMiguel PaniaguaHe did not ask for this fate, nor did he deserve it, particularly considering the tragic circumstances. Lì presented to the campus health provider one month prior with fatigue, abdominal pain, and jaundice. He and his parents immigrated to the United States from China when he was a child. He was well aware that he had hepatitis B from what (...) is termed "vertical transmission." His mom unknowingly passed on this virus to him during her pregnancy. In most countries with a high prevalence of the virus, prenatal screening is routinely undertaken, and prophylaxis administered. I am not certain this occurred in Lì's case and at this point it did not matter. Lì knew he would live with this for the duration of his life. In fact, he told me he had gone his whole life to this point without any symptoms whatsoever. What is known about chronic hepatitis B infection is that in most people affected, it can be considered a chronic disease where most live a long full life. The risk of advancing to liver cirrhosis or cancer in general is low. This unfortunately was not the case with Lì.What transpired was what they most feared. As he was studying for his final exams, Lì endured days of worsening fatigue, malaise, and nausea. He noticed his skin was a tinge of yellow and he was having some itching that was unusual. He noticed his clothes fitting more loosely and found he had unintentionally lost twenty pounds. He visited the campus health center and after a series of tests and imaging studies, Lì was diagnosed with advanced hepatocellular carcinoma, an unfortunate sequela of this chronic infection. It was then that he put school on hold and returned home to get further care.I first met Lì in the hospital as a consultant for the palliative medicine service. "He won't listen." "He is so difficult." "He is in denial." These were examples of some of the care team's exasperated assessments of his demeanor as a patient. What I did not realize prior to visiting him the first time was that Lì was a pre-clinical medical student. When I first met him, he did not want to talk very much; he was preoccupied and distant. In retrospect, I can see that he was suffering on so many levels. His appearance was gaunt and cachectic. The lights in the room cast shadows in the concave areas of his temples and his collarbones were the most prominent feature of his torso through his hospital gown. He glowed yellow from jaundice. When I examined him on this first visit, I noticed that his liver, a now grossly enlarged hard and nodular structure, occupied most of his abdomen. I found that speaking to him as a colleague, even calling him "doctor," helped him feel respected and enabled me to build rapport with him. At one point, I described to him the findings I felt in his abdomen. "I can palpate the edge of your liver here, what seems to be eight centimeters below your costal margin. There are many palpable nodularities on the ventral surface." It was at this point I invited him to palpate what I was feeling. I gently guided his own hand over his abdomen and noticed him studying the features as if they were not his own, like a skilled diagnostician.Over the course of three weeks, I visited with Lì when I was on service. The last time I saw him, he had declined rapidly, his disease progressing [End Page 17] cruelly, and he was very short of breath and becoming more somnolent. I noticed his mother in the room, standing by his bed, and crying inconsolably as he lay suffering. I felt deep anguish and remorse, wondering if she said these words to herself "It is all my fault," considering the source of his initial illness. I cannot even imagine.As I assisted the team in titrating his comfort medications, I sat with him. He shook my hand with all the strength left that he could muster and said, "you are a good doctor." I... (shrink)

My aim in this paper is to demonstrate that a very simple learning rule based on imitation can help to sustain altruism as a culturally transmitted pattern or behaviour among agents playing a standard prisoner’s dilemma game. The point of this demonstration is not to prove that imitation is single-handedly responsible for existing levels of altruism (a thesis that is false), nor is the point to show that imitation is an important factor in explanations for the evolution of altruism (a (...) thesis already prominent in the existing literature). The point is to show that imitation contributes to the evolution of altruism in a particular way that is not always fairly represented by evolutionary game theory models. Specifically, the paper uses a simple model to illustrate that cultural transmission includes mechanisms that do not transmit phenotype vertically (i.e. from parent to related offspring) and that these mechanisms can promote altruism in the absence of any direct biological propensity favouring such behaviour. This is a noteworthy result because it shows that evolutionary models can be built to explicitly reflect the contribution of non-vertical transmission in our explanations for the evolution of altruism among humans and other social species. (shrink)

The main objective of Zika transmission studies is to work out the simplest approach to scale back human mortality and morbidity caused by the disease. Therefore, it is essential to spot the relative importance of the various factors contributing to the transmission and prevalence of the disease. Many mathematical models have been formulated incorporating vector-to-human transmission or human-to-human transmission. However, they do not take into consideration the mixture of both sorts of transmission. It raises the (...) question of the impact of both sorts of transmission on the disease dynamics. We develop a mathematical model of Zika with the vertical transmission in the vector population and human-to-human transmission to answer this question. It includes the immature phase of mosquitoes, adult mosquitoes, and human hosts. Results show that neglecting sexual transmission results in an understatement of the proportion of the infected population. Furthermore, it reduces the speed of disease spreading. On the other hand, vertical transmission in mosquitoes has a negligible effect on the dynamics of disease spread. We perform a sensitivity analysis of the reproductive number R 0 to raise to understand the parameters driving the dynamics of the disease. It appears that the most sensitive parameters in decreasing order are as follows: the adult mosquito death rate, the sting rate, the transmission probability of mosquito to human, and, therefore, the transmission probability of human to mosquito. Furthermore, the proportion at the equilibrium of infected humans is extremely sensitive to the transition rate from the immature vector stage to the adult stage, the human-to-human transmission rate, and, therefore, the human recovery rate. These results confirm that control policies targeting the vector population and, therefore, the recovery rate of people are pretty effective solutions. To validate the model and estimate the important parameters of the model and the prediction of the disease, we consider the real cases in Colombia from 2016. In a series of graphic maps, we presented the comparative study to estimate the disease scenarios and to predict the time limit of the epidemic control measure. (shrink)

In this article we investigate the way in which viral load assays are used to assess the viruses of Human Immunodeficiency Virus (HIV)-positive pregnant women who are cared for in an HIV-specialist antenatal clinic in London. One of the viral load assays has been made more sensitive to subtypes of the virus that are considered to be local, possibly reading the viruses of those who have ‘foreign’ subtypes as undetectable. Consequently, the patient might not be offered the kind of care (...) needed to prevent transmission of HIV, as her body is not recognised as sufficiently debilitated. Thus, being identified as a debilitated body in this setting facilitates the prevention of vertical transmission of HIV and the management of the HIV-positive pregnant patient's virus. Further to this, we argue that in our example, having a debilitated body as constructed by the viral load assay is thus a ‘privilege’ that is accorded to HIV-positive persons depending on the geographic origin of their virus. Using Karen Barad's agential realism, we argue that the manner in which HIV is read through the viral load assay constructs a specific woman/foetus/hiv phenomenon. The specificity of this phenomenon directly impacts on the course of care, opening up or foreclosing the possibility of her child having a future free from HIV. (shrink)

A holobiont is a composite organism consisting of a host together with its microbiome, such as a coral with its zooxanthellae. To explain the often intimate integration between hosts and their microbiomes, some investigators contend that selection operates on holobionts as a unit and view the microbiome’s genes as extending the host’s nuclear genome to jointly comprise a hologenome. Because vertical transmission of microbiomes is uncommon, other investigators contend that holobiont selection cannot be effective because a holobiont’s microbiome (...) is an acquired condition rather than an inherited trait. This disagreement invites a simple mathematical model to see how holobiont selection might operate and to assess its plausibility as an evolutionary force. This paper presents two variants of such a model. In one variant, juvenile hosts obtain microbiomes from their parents (vertical transmission). In the other variant, microbiomes of juvenile hosts are assembled from source pools containing the combined microbiomes of all parents (horizontal transmission). According to both variants, holobiont selection indeed causes evolutionary change in holobiont traits. Therefore, holobiont selection is plausibly an effective evolutionary force with either mode of microbiome transmission. The modeling employs two distinct concepts of inheritance, depending on the mode of microbiome transmission: collective inheritance whereby juveniles inherit a sample of the collected genomes from all parents, as contrasted with lineal inheritance whereby juveniles inherit the genomes from only their own parents. A distinction between collective and lineal inheritance also features in theories of multilevel selection. (shrink)

This paper develops a simple, conceptual, mathematical model for the evolution of holobionts. Its purpose is to clarify how holobiont selection may cause evolutionary change in the traits of holobionts.

Using samples from three diverse populations, we test evolutionary hypotheses regarding how people reason about the inheritance of various traits. First, we provide a framework for differentiat-ing the outputs of mechanisms that evolved for reasoning about variation within and between biological taxa and culturally evolved ethnic categories from a broader set of beliefs and categories that are the outputs of structured learning mechanisms. Second, we describe the results of a modified “switched-at-birth” vignette study that we administered among children and adults (...) in Puno, Yasawa, and adults in the United States. This protocol permits us to study perceptions of prenatal and social transmission pathways for various traits and to differentiate the latter into vertical versus horizontal cultural influence. These lines of evidence suggest that people use all three mechanisms to reason about the distribution of traits in the population. Participants at all three sites develop expectations that morphological traits are under prenatal influence, and that belief traits are more culturally influenced. On the other hand, each population holds culturally specific beliefs about the degree of social influence on non-morphological traits and about the degree of vertical transmission—with only participants in the United States expecting parents to have much social influence over their children. We reinterpret people's differentiation of trait transmission pathways in light of humans' evolutionary history as a cultural species. (shrink)

Much existing literature in anthropology suggests that teaching is rare in non-Western societies, and that cultural transmission is mostly vertical (parent-to-offspring). However, applications of evolutionary theory to humans predict both teaching and non-vertical transmission of culturally learned skills, behaviors, and knowledge should be common cross-culturally. Here, we review this body of theory to derive predictions about when teaching and non-vertical transmission should be adaptive, and thus more likely to be observed empirically. Using three interviews (...) conducted with rural Fijian populations, we find that parents are more likely to teach than are other kin types, high-skill and highly valued domains are more likely to be taught, and oblique transmission is associated with high-skill domains, which are learned later in life. Finally, we conclude that the apparent conflict between theory and empirical evidence is due to a mismatch of theoretical hypotheses and empirical claims across disciplines, and we reconcile theory with the existing literature in light of our results. (shrink)

Continental authors and editors often sought to ground alchemical writing within a long-established, coherent and pan-European tradition, appealing to the authority of adepts from different times and places. Greek, Latin and Islamic alchemists met both in person and between the covers of books, in actual, fictional or coincidental encounters: a trope utilised in Michael Maier’s Symbola aureae mensae duodecim nationum. This essay examines how works attributed to an English authority, George Ripley, were received in central Europe and incorporated into continental (...) compendia. Placed alongside works by the philosophers of other nations, Ripley’s writings helped affirm the unity and truth of alchemy in defiance of its critics. His continental editors were therefore concerned not only with the provenance of manuscripts and high-quality exemplars, but by a range of other factors, including the desire to suppress controversial material, intervene in contemporary polemics, and defend their art. In the resulting compilations, the vertical axis of alchemy’s long, diachronic tradition may be compared to the horizontal plane of pan-European alchemy. (shrink)

En el capitulo VII de Sobre la interpretación, Aristóteles mutila un sistema de tres pares de proposiciones contradictorias naturales. Aristóteles excluye el par de proposiciones universales naturales, los hombres son blancos, los hombres no son blancos, los cuales se contradicen mutuamente. Esta mutilación lleva consigo consecuencias indeseables. Los dos pares de proposiciones contradictorias naturales, consideradas exclusivamente por Aristóteles, Todos los hombres son blancos versus Algunos hombres no son blancos y Algunos hombres son blancos versus ningún hombre es blanco son ilegítimamente (...) identificadas con los dos pares de proposiciones contradictorias lógicas, las cuales constituyen el cuadrado lógico: A versus O y 1 versus E respectivamente. De este modo, se confunden el nivel del lenguaje natural y el de la lógica. Dicha mutilación aristotélica se ve disimulada por la traducción de las llamadas proposiciones indeterminadas. Para traducir estas últimas, semánticamente proposiciones particulares, los eruditos, excepto P.Gohlke utilizan las dos universales excluidas por el maestro! La obra de 1. Pollak, publicada en Leipzig en 1913, nos revela el origen de este desliz de traducción casi universal: la versión árabe utilizada, desafortunadamente, por Al-Farabi en su comentario. Añadiendo los vértices Y y U a los del cuadrado, el hexágono lógico de Robert Blanché nos permite distinguir claramente la relación existente entre el sistema lógico y el sistema natural. (shrink)

In chapter VII of On Interpretation, Aristotle alters a system of three pairs of natural contradictory propositions, in that he ignores the pair where two natural universals Men are white, Men are not white oppose each other contradictorily. This alteration has serious consequences: the two natural pairs, which Aristotle considers exclusively: All men are white versus Some men are not white and Some men are white versus No man is white are illegitimately identified to the two pairs of logical contradictories (...) constituting the logical square: A versus 0 and I versus E respectively. Thus, the level of natural language and that of logic are confused. The unfortunate Aristotelian alteration is concealed by the translation of propositions known as indeterminates. To translate these, which, semantically, are particulars, all scholars, except for P.Gohlke, employ the two natural universals excluded by the master! The work of I. Pollak, published in Leipzig in 1913, reveals the origin of this nearly universal translation mistake: the Arabic version upon which AI-Farabi unfortunately bases his comment. In adding the vertices Y and U to the four ones of the square, the logical hexagon of Robert Blanche allows for the understanding of the manner in which the logical system and the natural system are linked. (shrink)

The dynamics of knowledge transmission and acquisition, or how different aspects of culture are passed from one individual to another and how they are acquired and embodied by individuals, are central to understanding cultural evolution. In small-scale societies, cultural knowledge is largely acquired early in life through observation, imitation, and other forms of social learning embedded in daily experiences. However, little is known about the pathways through which such knowledge is transmitted, especially during middle childhood and adolescence. This study (...) presents new empirical data on cultural knowledge transmission during childhood. Data were collected among the Baka, a forager-farmer society in southeastern Cameroon. We conducted structured interviews with children between 5 and 16 years of age about group composition during subsistence activities. Children’s groups were generally diverse, although children tended to perform subsistence activities primarily without adults and with same-sex companions. Group composition varied from one subsistence activity to another, which suggests that the flow of knowledge might also vary according to the activity performed. Analysis of the social composition of children’s subsistence groups shows that vertical and oblique transmission of subsistence-related knowledge might not be predominant during middle childhood and adolescence. Rather, horizontal transmission appears to be the most common knowledge transmission strategy used by Baka children during middle childhood and adolescence, highlighting the importance of other children in the transmission of knowledge. (shrink)

Placebo-trials on HIV-infected pregnant women in developing countries like Thailand and Uganda have provoked recent controversy. Such experiments aim to find a treatment that will cut the rate of vertical transmission more efficiently than existing treatments like zidovudine. This scenario is first stated as generally as possible, before three ethical principles found in the Belmont Report, itself a sharpening of the Helsinki Declaration, are stated. These three principles are the Principle of Utility, the Principle of Autonomy and the (...) Principle of Justice. These are taken as voices of moral imperative. But although each has intuitive appeal, it can be shown that there are possible scenarios in which they give conflicting prescriptions. To achieve consistency, one must be subordinate to the others. The voice of utility is taken as subordinate to those of justice and autonomy and it is shown that given plausible assumptions about the level of poverty and education in the developing country targeted, the experiment is ruled morally wrong in the name of both justice and autonomy. Moreover, it is argued that no justification can be found for the inclusion of a placebo group, when strictly defined. By contrast, a ‘no- treatment’ control arm might be justified, but only when the demands of autonomy are satisfied, demands that are more stringent than they might appear. A utilitarian defence of the experiment is examined, namely that the would-be participants are in a no-loss situation, and it is shown that this defence is seriously flawed. Finally, it is concluded that there is no justification for amending the Declaration of Helsinki. (shrink)

This article takes an intergenerational lens to the study of fathers. It draws on evidence from two economic and social research council-funded intergenerational studies of fathers, one of which focused on four-generation British families and the other which included new migrant (Polish) fathers. The article suggests both patterns of change and continuity in fatherhood across the generations. It demonstrates how cultural forces and material conditions need to combine to facilitate change in fathers? exercise of agency and how social class and (...) the conditions of being a migrant shape fathers? practices. It argues that in seeking to recast the public debate about parenting, it is necessary to penetrate below the discursive level of talk about parenting to examine the habitual nature of many family practices, an endeavour to which an intergenerational approach is well suited. This approach enabled us to tease out the horizontal pull of within-generation influences on fathers, the vertical pull of inheritance from older to younger generations and the material and cultural conditions of fathers? current locations, all of which shape their practices. This analysis also alerted us to changes in conceptual language ? not only from fatherhood to fathering ? but also to the historical resilience of the concept of childcare as reserved largely for the role and practices of mothers. (shrink)

The species comprising the fungal endophyte genus “Epichloë ”are symbionts of cool season grasses. About half the species in this genus are strictly vertically transmitted, and evolutionary theory suggests that these species must be mutualists. Nevertheless, Faeth and Sullivan (e.g., 2003) have argued that such vertically transmitted endophytes are ’usually parasitic,’ and Müller and Krauss (2005) have argued that such vertically transmitted endophytes fall along a mutualism-parasitism continuum. These papers (and others) have caused confusion in the field. We used a (...) systematic review to show that close to half of the published papers in this field incorrectly categorize the interaction. Here, we develop the argument that advantages and disadvantages are not the same things as mutualism and parasitism and that experimental evidence must be interpreted in the context of theory. We argue that, “contra ”Faeth and Sullivan, it is highly unlikely that such strictly vertically transmitted endophytes can be parasites, and that, “contra ”Müller and Krauss, it is inappropriate to apply the continuum concept to strictly vertically transmitted endophytes. We develop a mathematical model to support and illustrate our arguments. We use the model to clarify that parasitism “requires ”some degree of horizontal transmission, and that while it is appropriate to use the continuum concept when referring to the genus as a whole, or to species that possess horizontal transmission, we argue that it is inappropriate to use the concept when referring to species that are strictly vertically transmitted. (shrink)

The article proposes to further develop the ideas of the Extended Evolutionary Synthesis by including into evolutionary research an analysis of phenomena that occur above the organismal level. We demonstrate that the current Extended Synthesis is focused more on individual traits (genetically or non-genetically inherited) and less on community system traits (synergetic/organizational traits) that characterize transgenerational biological, ecological, social, and cultural systems. In this regard, we will consider various communities that are made up of interacting populations, and for which the (...) individual members can belong to the same or to different species. Examples of communities include biofilms, ant colonies, symbiotic associations resulting in holobiont formation, and human societies. The proposed model of evolution at the level of communities revises classic theorizing on the major transitions in evolution by analyzing the interplay between community/social traits and individual traits, and how this brings forth ideas of top-down regulations of bottom-up evolutionary processes (collaboration of downward and upward causation). The work demonstrates that such interplay also includes reticulate interactions and reticulate causation. In this regard, we exemplify how community systems provide various non-genetic ‘scaffoldings’, ‘constraints’, and ‘affordances’ for individual and sociocultural evolutionary development. Such research complements prevailing models that focus on the vertical transmission of heritable information, from parent to offspring, with research that instead focusses on horizontal, oblique and even reverse information transmission, going from offspring to parent. We call this reversed information transfer the ‘offspring effect’ to contrast it from the ‘parental effect’. We argue that the proposed approach to inheritance is effective for modelling cumulative and distributed developmental process and for explaining the biological origins and evolution of language. (shrink)

This article examines the relationship between bioethics and the therapeutic standards in HIV prevention research in the developing world, focusing on the closure of the pre-exposure prophylaxis (PrEP) trials in the early 2000s. I situate the PrEP trials in the historical context of the vertical transmission debates of the 1990s, where there was protracted debate over the use of placebos despite the existence of a proven intervention. I then discuss the dramatic improvement in the clinical management of HIV (...) and the treatment access movement, and consider how these contexts have influenced research practice. I argue that as HIV prevention trials oblige researchers to observe the rate at which vulnerable people under their care acquire HIV, there is an obligation to provide antiretroviral treatment to seroconverters and other health care benefits that fall within the scope of researchers' entrustment, both to avoid exploitation and to enact reciprocal justice. I argue against propositions that the obligations to provide specific benefits are vague, fall only upon researchers and sponsors, and create injustices by privileging the few over the many. Finally, I contend that the realisation of a broader standard of care in HIV prevention research broadens the role of research from being a simple tool to produce knowledge to a complex intervention that can play a part in the reduction of health disparities. (shrink)

This paper argues that a plant together with the symbiotic fungus attached to its roots, a mycorrhizal collective, is an evolutionary individual, and further, that mycorrhizal individuality has important implications for evolutionary theory. Theoretical individuation is defended and then employed to show that mycorrhizal collectives function as interactors according to David Hull’s replicator-interactor model of evolution by natural selection, and because they have the potential to engage in pseudo-vertical transmission, mycorrhizal collectives also function as Darwinian individuals, according to (...) Peter Godfrey-Smith’s Darwinian Populations model of evolution by natural selection. Mycorrhizae in nature usually connect the roots of multiple plants, so mycorrhizal individuality entails the existence of overlapping evolutionary individuals, and because the potential to engage in pseudo-vertical transmission comes in degrees, it follows that these overlapping evolutionary individuals also come in degrees. I suggest here that the degree of evolutionary individuality in a symbiotic collective corresponds to its probability of reproducing with vertical or pseudo-vertical transmission. This probability constitutes a fourth parameter of graded Darwinian individuality in collective reproducers and warrants an update to Godfrey-Smith’s 3D model. (shrink)

Since the introduction of drugs to prevent vertical transmission of HIV, the purpose of and approach to HIV testing of pregnant women has increasingly become an area of major controversy. In recent years, many strategies to increase the uptake of HIV testing have focused on offering HIV tests to women in pregnancy-related services. New global guidance issued by the World Health Organization (WHO) and the Joint United Nations Programme on HIV/AIDS (UNAIDS) specifically notes these services as an entry (...) point for provider-initiated HIV testing and counseling (PITC). The guidance constitutes a useful first step towards a framework within which PITC sensitive to health, human rights and ethical concerns can be provided to pregnant women in health facilities. However, a number of issues will require further attention as implementation moves forward. It is incumbent on all those involved in the scale up of PITC to ensure that it promotes long-term connection with relevant health services and does not result simply in increased testing with no concrete benefits being accrued by the women being tested. Within health services, this will require significant attention to informed consent, pre- and post-test counseling, patient confidentiality, referrals and access to appropriate services, as well as reduction of stigma and discrimination. Beyond health services, efforts will be needed to address larger societal, legal, policy and contextual issues. The health and human rights of pregnant women must be a primary consideration in how HIV testing is implemented; they can benefit greatly from PITC but only if it is carried out appropriately. (shrink)

Niche construction theory inherits flaws from previous gene-culture coevolutionary theories. Units of cultural transmission have not yet been defined. Vertical transmission is not necessarily an overwhelmingly important part of culture. The assumption that human genetic interests and human cultural interests are in synch is a form of naive group selection.

Recent global advances in available technology to prevent mother-to-child HIV transmission necessitate a rethinking of contemporary and previous ethical debates on HIV testing as a means to preventing vertical transmission. In this paper, we will provide an ethical analysis of HIV-testing strategies of pregnant women. First, we argue that provider-initiated opt-out HIV testing seems to be the most effective HIV test strategy. The flip-side of an opt-out strategy is that it may end up as involuntary testing in (...) a clinical setting. We analyse this ethical puzzle from a novel perspective, taking into account the moral importance of certain hypothetical preferences of the child, as well as the moral importance of certain actual preferences of the mother. Finally, we balance the conflicting concerns and try to arrive at an ethically sound solution to this dilemma. Our aim is to introduce a novel perspective from which to analyse testing strategies, and to explore the implications and possible benefits of our proposal. The conclusion from our analysis is that policies that recommend provider-initiated opt-out HIV testing of pregnant mothers, with a risk of becoming involuntary testing in a clinical setting, are acceptable. The rationale behind this is that the increased availability of very effective and inexpensive life-saving drugs makes the ethical problems raised by the possible intrusiveness of HIV testing less important than the child's hypothetical preferences to be born healthy. Health care providers, therefore, have a duty to offer both opt-out HIV testing and available PMTCT (preventing mother-to-child transmission) interventions. (shrink)

Annual and cumulative incidences of HIV + and AIDS in patients reported by the AIDS Surveillance Committee of the Ministry of Health and Welfare are cited to illustrate some characteristics in Japan: nearly 59% of either HIV + or AIDS patients were infected through injection of blood products or by blood transfusion. A number of plaintiffs have sued the Japanese government and pharmaceutical companies since 1989, but no judicial decisions have yet been made. The incidence of HIV decreases for each (...) of the following routes of infection: the second highest route of transmission being heterosexual, followed by bisexual and unconfirmed or unknown cases, and less frequently homosexual, drug use and lastly via vertical transmission. The most serious bioethical problems with HIV + and AIDs patients in Japan is the social segregation of these patients. There are many emotional fears among the general public and medical personnel about AIDS because of their inadequate scientific knowledge of this disease. The Japan Hospital Association is doing The Stop AIDS Campaign and made several surveys. Japan has become increasingly aware of the importance of AIDS education and a great deal of effort is being made to enhance bioethical considerations. (shrink)

The question of the moral acceptability of infertility treatment to HIV positive persons raises a number of interesting ethical points regarding the responsibility of the infertility specialist for the outcome of his or her actions. The analysis of the physician’s responsibility is conducted within the framework of accomplice liability. The physician is a collaborator in the parental project of the principals—that is, the intentional parents. Both causal contribution and intention are considered as elements of complicity. It is concluded that a (...) two per cent risk of vertical transmission when the woman is HIV positive is insufficient to blame the infertility specialist who helps her to conceive. Helping an infertile HIV positive infertile couple to have a child does not constitute reckless behaviour. When the couple is fertile, infertility treatment is directed at risk reduction and falls under the physician’s obligation to act in the best interests of his patients. (shrink)

Annual and cumulative incidences of HIV+ and AIDS in patients reported by the AIDS Surveillance Committee of the Ministry of Health and Welfare are cited to illustrate some characteristics in Japan: nearly 59% of either HIV+ or AIDS patients were infected through injection of blood products or by blood transfusion. A number of plaintiffs have sued the Japanese government and pharmaceutical companies since 1989, but no judicial decisions have yet been made. The incidence of HIV decreases for each of the (...) following routes of infection: the second highest route of transmission being heterosexual, followed by bisexual and unconfirmed or unknown cases, and less frequently homosexual, drug use and lastly via vertical transmission. The most serious bioethical problems with HIV+ and AIDS patients in Japan is the social segregation of these patients. There are many emotional fears among the general public and medical personnel about AIDS because of their inadequate scientific knowledge of this disease. The Japan Hospital Association is doing The Stop AIDS Campaign and made several surveys. Japan has become increasingly aware of the importance of AIDS education and a great deal of effort is being made to enhance bioethical consideration. (shrink)

Annual and cumulative incidences of HIV + and AIDS in patients reported by the AIDS Surveillance Committee of the Ministry of Health and Welfare are cited to illustrate some characteristics in Japan: nearly 59% of either HIV + or AIDS patients were infected through injection of blood products or by blood transfusion. A number of plaintiffs have sued the Japanese government and pharmaceutical companies since 1989, but no judicial decisions have yet been made. The incidence of HIV decreases for each (...) of the following routes of infection: the second highest route of transmission being heterosexual, followed by bisexual and unconfirmed or unknown cases, and less frequently homosexual, drug use and lastly via vertical transmission. The most serious bioethical problems with HIV + and AIDs patients in Japan is the social segregation of these patients. There are many emotional fears among the general public and medical personnel about AIDS because of their inadequate scientific knowledge of this disease. The Japan Hospital Association is doing The Stop AIDS Campaign and made several surveys. Japan has become increasingly aware of the importance of AIDS education and a great deal of effort is being made to enhance bioethical considerations. (shrink)

Neospora caninum infection, one of the major causes of abortions in dairy cattle, has brought a huge loss to farmers worldwide. In this study, we develop a six-compartment susceptible-infected model of N. caninum transmission which is later reduced to a two-equation system. Potential controls including medication, test-and-cull, and vaccination are proposed and analyzed, and the corresponding reproduction numbers are derived. The conditions for the global stabilities of disease-free and endemic equilibria are investigated with analytical solutions and geometric approach. Furthermore, (...) uncertainty and sensitivity analysis shows that three control strategies are effective towards the varied environment, whereas the effectiveness of each measure highly depends on parameters related to control actions. Dynamics of reproduction numbers illustrate that disease elimination can be achieved by three types of controls: adopting medication with medicine efficacy higher than 0.4 to prevent vertical transmission, implementing test-and-cull with culling coverage larger than 0.3, and taking vaccine with coverage larger than 0.1. Numerical results suggest that preventive measures should at least include the prevention of access of other hosts, such as dogs, to cattle; otherwise, these control measures will lose effectiveness. Our presented study provides guidance for decision-making on N. caninum infected farm management. (shrink)

The fields of HIV care in pregnancy and reproductive genetics have always been ‘exceptional’ in that patients are highly concerned about the potential for stigma and the corresponding need for privacy and confidentiality. However, the two fields have diverged in how they have addressed these concerns. The systematic review analyzed 61 manuscripts for similarities and differences between the fields of HIV care in pregnancy and reproductive genetics in the United States, with respect to privacy, confidentiality, disclosure, and stigma. The systematic (...) review revealed that the field of HIV care in pregnancy has insufficiently addressed patient concerns about privacy, confidentiality, and stigma compared to the field of reproductive genetics. Failure to adequately protect confidentiality of HIV-positive patients, and failure to reduce stigma associated with HIV testing and treatment are deficiencies in the delivery of care to HIV-positive pregnant woman and barriers to reducing vertical transmission of HIV. Im.. (shrink)

We prove almost sure exponential stability for the disease-free equilibrium of a stochastic differential equations model of an SIR epidemic with vaccination. The model allows for vertical transmission. The stochastic perturbation is associated with the force of infection and is such that the total population size remains constant in time. We prove almost sure positivity of solutions. The main result concerns especially the smaller values of the diffusion parameter, and describes the stability in terms of an analogue $$\mathcal{R}_\sigma$$ (...) of the basic reproduction number $$\mathcal{R}_0$$ of the underlying deterministic model, with $$\mathcal{R}_\sigma \le \mathcal{R}_0$$. We prove that the disease-free equilibrium is almost sure exponentially stable if $$\mathcal{R}_\sigma <1$$. (shrink)

The maternal‐fetal HIV transmission trials, conducted in developing countries in the 1990s, undoubtedly generated one of the most intense, high profile controversies in international research ethics. They sparked off a prolonged acrimonious and public debate and deeply divided the scientific community. They also provided an impetus for the revision of the Declaration of Helsinki – the most widely known guideline for international research. In this paper, I provide a brief summary of the context, outline the arguments for and against (...) the controversial use of placebo controls, and focus on particular areas that I believe merit further discussion or clarification. On balance, I argue that the researchers failed in their duties to protect the best interests of their research subjects, and to promote distributive justice. I discuss the difficulties of obtaining valid consent in this research context, and argue that it is unethical to inform women of their HIV status without at least offering them prophylactic treatment for their unborn children. A global view of justice, which endorses international equity, cannot be squared with international research guidelines that allow ‘local conditions’ to define the scope of duty to the control group. Finally, I suggest that the heated debate reflects a tension, if not an outright war, between two conflicting meta‐ethical systems, or incommensurable paradigms, that underpin scientific research involving human subjects. (shrink)

Holobionts, consisting of a host and diverse microbial symbionts, function as distinct biological entities anatomically, metabolically, immunologically, and developmentally. Symbionts can be transmitted from parent to offspring by a variety of vertical and horizontal methods. Holobionts can be considered levels of selection in evolution because they are well-defined interactors, replicators/reproducers, and manifestors of adaptation. An initial mathematical model is presented to help understand how holobionts evolve. The model offered combines the processes of horizontal symbiont transfer, within-host symbiont proliferation, (...) class='Hi'>vertical symbiont transmission, and holobiont selection. The model offers equations for the population dynamics and evolution of holobionts whose hologenomes differ in gene copy number, not in allelic or loci identity. The model may readily be extended to include variation among holobionts in the gene identities of both symbionts and host. (shrink)

What are the driving forces of cultural macroevolution, the evolution of cultural traits that characterize societies or populations? This question has engaged anthropologists for more than a century, with little consensus regarding the answer. We develop and fit autologistic models, built upon both spatial and linguistic neighbor graphs, for 44 cultural traits of 172 societies in the Western North American Indian (WNAI) database. For each trait, we compare models including or excluding one or both neighbor graphs, and for the majority (...) of traits we find strong evidence in favor of a model which uses both spatial and linguistic neighbors to predict a trait’s distribution. Our results run counter to the assertion that cultural trait distributions can be explained largely by the transmission of traits from parent to daughter populations and are thus best analyzed with phylogenies. In contrast, we show that vertical and horizontal transmission pathways can be incorporated in a single model, that both transmission modes may indeed operate on the same trait, and that for most traits in the WNAI database, accounting for only one mode of transmission would result in a loss of information. (shrink)

From Chernobyl to Fukushima, it became clear that the technology is a system evolutionary factor, and the consequences of man-made disasters, as the actualization of risk related to changes in the social heredity (cultural transmission) elements. The uniqueness of the human phenomenon is a characteristic of the system arising out of the nonlinear interaction of biological, cultural and techno-rationalistic adaptive modules. Distribution emerging adaptive innovation within each module is in accordance with the two algorithms that are characterized by the (...) dominance of vertical (transgenerational) and horizontal (infection, contagion) adaptive streams of information, respectively. Evolutionary risk is the result of an imbalance of autonomous adaptive systems have an essential attribute of adaptibe strategy of Homo. Technological civilization inherent predisposition to overcome their dependence on biological and physical components. This feature serves as an enhancer of the evolutionary generating conjugate with the scientific and technological development risk We can assume the existence of an intention of Western mentality to a high priority (positive or negative) of technological modifications micro-social environment and post- Soviet (East Slavic) mentality to modification of macro-social system. (shrink)

Written for non-experts, this volume introduces the mechanisms that underlie reticulate evolution. Chapters are either accompanied with glossaries that explain new terminology or timelines that position pioneering scholars and their major discoveries in their historical contexts. The contributing authors outline the history and original context of discovery of symbiosis, symbiogenesis, lateral gene transfer, hybridization or divergence with gene flow, and infectious heredity. By applying key insights from the areas of molecular (phylo)genetics, microbiology, virology, ecology, systematics, immunology, epidemiology and computational science, (...) they demonstrate how reticulate evolution impacts successful survival, fitness and speciation. Reticulate evolution brings forth a challenge to the standard Neo-Darwinian framework, which defines life as the outcome of bifurcation and ramification patterns brought forth by the vertical mechanism of natural selection. Reticulate evolution puts forward a pattern in the tree of life that is characterized by horizontal mergings and lineage crossings induced by symbiosis, symbiogenesis, lateral gene transfer, hybridization or divergence with gene flow, and infective heredity, making the “tree of life” look more like a “web of life.” On an epistemological level, the various means by which hereditary material can be transferred horizontally challenges our classic notions of units and levels of evolution, fitness, modes of transmission, linearity, communities, and biological individuality. The case studies presented examine topics including the origin of the eukaryotic cell and its organelles through symbiogenesis; the origin of algae through primary and secondary symbiosis and dinoflagellates through tertiary symbiosis; the superorganism and holobiont as units of evolution; how endosymbiosis induces speciation in multicellular life forms; transferrable and non-transferrable plasmids and how they symbiotically interact with their host; the means by which pro- and eukaryotic organisms transfer genes laterally (bacterial transformation, transduction and conjugation as well as transposons and other mobile genetic elements); hybridization and divergence with gene flow in sexually-reproducing individuals; current (human) microbiome and viriome studies that impact our knowledge concerning the evolution of organismal health and acquired immunity; and how symbiosis and symbiogenesis can be modelled in computational evolution. (shrink)

Experimental Semiotics (ES) is the study of novel forms of communication that communicators develop in laboratory tasks whose designs prevent them from using language. Thus, ES relates to pragmatics in a “pure,” radical sense, capturing the process of creating the relation between signs and their interpreters as biological, psychological, and social agents. Since such a creation of meaning-making from scratch is of central importance to language evolution research, ES has become the most prolific experimental approach in this field of research. (...) In our paper, we report the results of a study on the scope of recent ES and evaluate the ways in which it is relevant to the study of language origins. We coded for multiple levels across 13 dimensions related to the properties of the emergent communication systems or properties of the study designs, such as type of goal (coordination versus referential), modality of communication, absence or presence of turn-taking, or the presence of vertical vs. horizontal transmission. We discuss our findings and our classification, focusing on the advantages and limitations of those trends in ES, and in particular their ecological validity in the context of bootstrapping communication and the evolution of language. (shrink)

This book researches the thought of Jin Yuelin’s epistemology with some notions and methods of contemporary epistemology as the frame of reference. There are two kinds of academical significance in this book, one is that author has accurately comprehended the specific content, inadequacies and contradictions in Jin’ s epistemology, recognized the methods by which Jin Yuelin built his theory of knowledge. The other is that author has known about the differences in research objects and methods between Jin’s theory and contemporary (...) epistemology, and showed the position of Jin’s epistemology in the whole theory of knowledge through the comparative study. On the one hand, the book focuses on the core problem of Jin Yuelin’ epistemology that is how objective knowledge is produced. On the other hand, it is made up of seven chapters in accordance with the structure of Jin’s Theory of Knowledge. The first chapter introduces and comparatively analyzes the comprehensions about the concepts of “knowledge” and “epistemology” between Jin Yuelin and contemporary epistemologists. This chapter supplies the means and methods for following chapters. The second chapter describes Jin’s standpoint and criticism to idealism starting mode, analyzes the objective starting mode that belongs to Jin’s theory and reveals his negative attitude to skepticism. This chapter shows the essential characteristics of the Jin Yuelin’s epistemology. The given is the content of sensation, which is the most basic part of cognitive activity. Moreover Jin Yuelin regards sensation as foundation of knowledge, so the research on theory of the given is separated from the whole study of cognitive activity and treated as the third chapter, which presents Jin’s theory of the given and analyzes the problems of Jin’s theory, then introduces some kinds of theory of the given and theory of perception in the contemporary epistemology, finally comparatively investigates theories of the given between Jin Yuelin and contemporary epistemologists. From the perspective of cognitive activity, the fourth chapter describes the perceptual activity, the activity of knowing, the activity of thinking, means and outlines of reception in Jin’s epistemology, then exposes its contradictions and inadequacies; Induction is the important research object of the Western epistemologists, similarly Jin Yuelin paid more attention to induction and regards the principle of induction as outline of reception. In fact, his standpoint about the principle of induction is vital and creative, so the study of induction separately belongs to the fifth chapter. This chapter presents the Jin’s comprehension about the principle of induction and some answers to the problem of induction in contemporary epistemology, then comparatively analyzes two kinds of the thought about induction. The sixth chapter successively introduces being, nature and fact which all are objects of cognitive activity, then analyzes the problems within them. From the perspective of cognitive results, the last chapter presents the Jin’s standpoint about verification and demonstration of proposition, definition and criteria of truth, then simply describes the point views of contemporary epistemologists about verification and truth of proposition, finally comparatively investigates two kinds of thought. From the vertical, the thesis analyzes the fundamental sections of objective knowledge one by one, such as the given, experience, idea, proposition and truth. From the horizontal, the book focuses on the three main parts of knowledge event, for example, cognitive activity, objects of knowledge and the true proposition treated as knowledge. In a word, the whole book is coherent and organic unity. Through the comparative study, it can be concluded that it is reasonable for Jin Yuelin to enjoy a high academic status, because he is the first philosopher who specializes in the study of epistemology. At the same times, he improves transmission of logic, metaphysics and epistemology from the Western to China. So, his hard work enriches and expands the realm of Chinese philosophy. With the development of the study of epistemology, descriptive content of it, such as, perceptual activity and rational activity, will be regarded as the objects of psychology and cognitive science. Meanwhile, normative content will be retained. For example, analysis of conditions of knowledge, justification for belief claims, comprehension about the proofs of justification, as well as reactions to challenges of skepticism. The latter will continue to be objects of epistemology, of course, they must establish close relationships with psychology and cognitive science. According to this prospect, we should split Jin Yuelin’s theory of knowledge, of which the descriptive content would be allocated to psychology and cognitive science. On the contrary, the normative content would be kept as important resource for deeply studying epistemology. -/- Key words: Knowledge; Contemporary epistemology; Compare; The given; Idea; The principle of induction; Fact. (shrink)

In recent years, with the rapid development of computer storage capabilities and network transmission capabilities, users can easily share their own video and image information on social networking sites, and the amount of multimedia data on the network is rapidly increasing. With the continuous increase of the amount of data in the network, the establishment of effective automated data management methods and search methods has become an increasingly urgent need. This paper proposes a retrieval method of human motion data (...) based on motion capture in index space. By extracting key frames from the original motion to perform horizontal dimensionality reduction and defining features based on Laban motion analysis, the motion segment is subjected to vertical feature dimensionality reduction. After extracting features from the input motion segment, motion matching is performed on the index space. This paper designs the optimization method of the phased dynamic time deformation algorithm in time efficiency and analyzes the optimization method of the phased dynamic time deformation algorithm in time complexity. Considering the time efficiency redundancy, this paper optimizes the time complexity of the phased dynamic time deformation method. This improves the time efficiency of the staged dynamic time warping algorithm, making it suitable for larger-scale human motion data problems. Experiments show that the method in this paper has the advantage of speed, is more in line with the semantics of human motion, and can meet the retrieval requirements of human motion databases. (shrink)

This paper examines how innovative skills and knowledge are transmitted and acquired among adolescents in two hunter-gatherer communities, the Aka of southern Central African Republic and the Chabu of southwestern Ethiopia. Modes of transmission and processes of social learning are addressed. Innovation as well as social learning have been hypothesized to be key features of human cumulative culture, enhancing the fitness and survival of individuals in diverse environments. The innovation literature indicates adult males are more innovative than children and (...) female adults and therefore predicts that adolescents will seek out adult males. Further, the mode of transmission should be oblique. Thus, learning of innovations should be oblique or horizontal rather than vertical, with adolescents paying particular attention to “successful” innovative individuals. The social learning literature indicates that complex skills or knowledge is likely to be learned through teaching, and therefore that teaching will be an important process in the transmission of innovations. In-depth and semi-structured interviews, informal observations, and systematic free-listing were used to evaluate these hypotheses. The study found that cultural context patterned whether or not adolescents sought out adult male or female innovators; oblique modes of transmission were mentioned with greater frequency than horizontal or vertical modes; knowledge and skill bias was notable and explicitly linked by the adolescents to reproductive effort; and teaching was biased toward same-sex individuals and was an important but not an exclusive means of transmitting complex skills and social knowledge. (shrink)

Photo ID 72893750 © Rawpixelimages|Dreamstime.com ABSTRACT Solidarity is a concept increasingly employed in bioethics whose application merits further clarity and explanation. Given how vital cooperation and community-level care are to mitigating communicable disease transmission, we use lessons from the COVID-19 pandemic to reveal how solidarity is a useful descriptive and analytical tool for public health scholars, practitioners, and policymakers. Drawing upon an influential framework of solidarity that highlights how solidarity arises from the ground up, we reveal how structural forces (...) can impact the cultivation of solidarity from the top down, particularly through ensuring robust access to important social determinants of health. Public health institutions can support solidarity movements among individuals and communities by adopting a lens of social justice when considering public health priorities and, in turn, promote health equity. INTRODUCTION Over the past two decades, scholars have invoked the concept of solidarity when assessing a wide range of topics in bioethics, from CRISPR-Cas9 technology to organ donation to structural racism.[1] However, the growing literature on solidarity has not fully examined the roles and responsibilities of institutions and governments in fostering solidarity, especially regarding public health measures that implicate entire populations. We argue that it remains unclear how public health institutions should engage with solidarity and how their engagement will affect public health and its ethics. We first take Prainsack and Buyx’ three-tiered framework as an analytical starting point.[2] We then explore how public health institutions can foster solidarity by carefully considering factors that may bolster it on an interpersonal, community, and national scale. We conclude that public health institutions should adopt a lens of social justice to promote solidarity at the interpersonal and community levels, thereby promoting equity in future public health efforts. BACKGROUND Calls for solidarity in bioethics raise longstanding normative questions about the nature and limits of our duties to one another and how to weigh autonomy over considerations of justice.[3] Though the term is diversely applied, Prainsack and Buyx propose a potentially unifying definition in the 2011 Nuffield Council report, “Solidarity: Reflections On An Emerging Concept in Bioethics.” The report defines solidarity as an activity involving “shared practices reflecting a collective commitment to carry financial, social, emotional, and or other ‘costs’ to assist others.” Their conceptualization also includes important features that distinguish solidarity from other values like empathy or altruism: solidarity emphasizes action rather than mere internal feeling and recognition of connection as motivation.[4] Bioethicists have since applied this conceptualization when analyzing issues in public and global health, given that population-level efforts need cooperation from individuals and communities. Prainsack and Buyx further note that solidarity is relevant in bioethics discourses about justice and equity, in support of providing aid to low- and middle-income countries, and as a value exemplified by European welfare states.[5] Other bioethicists have argued that promoting solidarity can contribute to community engagement, partnership with Tribal communities, and global health equity.[6] Most recently, scholars have applied solidarity as a lens to assess the COVID-19 pandemic, highlighting the pitfalls of national mitigation efforts and global disparities in disease outcomes.[7] I. Solidarity at Three Levels It seems impossible to foster solidarity in public health if we cannot identify it in general contexts. Prainsack and Buyx articulate three levels of solidarity: interpersonal solidarity, group solidarity, and legal or contractual codifications of solidarity.[8] They argue that each level inherently informs the one ‘above’ it in a unilateral direction. In other words, solidarity is fundamentally a bottom-up phenomenon. Solidarity among individuals influences group norms, which then have the potential to shape policy and institutional practice.[9] Within the Prainsack and Buyx framework, it would seem nonsensical to posit how solidarity might be expressed vertically or from the “top down.” It appears intuitively odd to imagine how a government entity might ‘be’ in solidarity with a person or group if solidarity requires some cognition about their condition per Prainsack and Buyx’ definition. Some have argued that solidarity does not seem like something that one can impose, as instances of it arise from agents recognizing and acting upon some bond rather than in response to a command. Indeed, people may be rightfully hesitant to engage in solidarity if the official messaging is overly paternalistic or coercive.[10] However, some authors have countered that governments can express solidarity through enacting structural and policy changes, though it is ambiguous how these actions are distinct from a justice-driven approach.[11] If a bottom-up approach is thus the most practical means of achieving policy that reflects solidarity, then it does not add much to public health. Institutions would be ineffective without the population’s initiation of the corresponding social norms. However, we find this conclusion overly pessimistic. Fostering a culture of solidarity to improve public health has potential merit. Prainsack and Buyx’ framework overlooks how public health actors can influence solidarity between individuals and across communities. To clarify, we agree with the view that solidarity is a bottom-up phenomenon. Solidarity may not be able to originate in a top-down fashion, but we suggest that public health institutions can take a more active role in providing the public with accurate information, promoting social justice, and intervening in the social determinants of health. II. The COVID-19 Pandemic as a Case Study Lessons learned from the ongoing COVID-19 pandemic support our argument. The pandemic deepened socioeconomic disparities in the US and hindered access to vital resources such as food, housing, and healthcare.[12] Prainsack recently noted: “[n]ext to the immediate health effects of the virus, poverty and grave inequalities have been the root causes of human suffering during the pandemic.”[13] Prior to the pandemic, many rural and low-income populations lacked reliable access to the internet and devices like laptops or smartphones. This continued lack of access restricts the flow of information and prevents people from accessing telemedicine services.[14] Preexisting social, political, and health inequities worsened health outcomes among many marginalized racial and ethnic groups. It is well-documented that communities of color, including Black, American Indian or Alaska Native, and Latinx populations, had greater COVID-related mortality and morbidity due to the effects of structural racism.[15] Although federal US agencies such as the Centers for Disease Control and Prevention enacted laws that provided safety nets (e.g., the Federal Eviction Moratorium), the majority of such programs have ended, leaving many with little assistance and the threat of further hardship.[16] These disparities are relevant because Prainsack, Buyx, and others note that solidarity arises from agents recognizing and acting on some perceived attainable collective goal(s). Income inequality and disparate access to food, education, and health care may lead people to consider public health goals unattainable. This could limit the desire to work toward those goals collectively.[17] The existing literature on collective action theory supports this intuition. It emphasizes that structural conditions, such as an absence of perceived hope for social change among a group, can lead to low ‘group efficacy’ and little willingness to cooperate, both within and across socioeconomic strata.[18] The pandemic spurred countless messages from public health agencies. The messaging did not recognize or attend to the different material realities and circumstances of the US population. How can people feel comfortable getting vaccinated if they deeply distrust the government, including public health institutions? How can people remain motivated to wear masks and distance themselves if they cannot afford basic necessities and work jobs without adequate pay and leave policies? We ask these questions to illustrate how socioeconomic disparities can marginalize people if they feel ignored, apathetic, or resentful of those better off or those in power whom they perceive to “not be doing enough.” This marginalization precludes the formation of solidarity. There are instances when a population has disparate access to resources and social capital, but solidarity may still emerge from a shared goal or vision for the future. For example, a heterogeneous population living in the same town may come together to protest an environmental injustice that impacts their water supply with the common goal of securing access to safe drinking water. However, many populations in the US failed to recognize shared goals of this kind during the COVID-19 pandemic. A significant minority of the US population was reluctant to acknowledge the severity of COVID-19 infection and thus refused to participate in efforts to mitigate its spread. Even between groups who shared the goal of slowing COVID-19 transmission, the methods were widely debated. Approximately 20 percent of the adult population eligible for vaccination remains unvaccinated.[19] Governmental bodies responsible for disseminating information, coordinating the allocation of resources, and establishing guidelines have a large role in mediating these disagreements and intervening in socioeconomic conditions that impact people's ability and willingness to engage in solidarity. III. Solidarity, Social Justice, and the Role of Public Health Institutions Adopting a lens of social justice provides further insights into how public health actors impact solidarity. Powers and Faden argue that the “foundational moral justification for the social institution of public health is social justice.”[20] Their theory of social justice has two aims. First, it ensures that everyone has a sufficient amount of the six core elements of well-being and that public health institutions are responsible for “adopting policies and creating environments” where all can flourish.[21] Second, public health institutions should distribute resources meant to promote well-being and focus on the “needs of those who are the most disadvantaged.”[22] Public health institutions should enact policies that address injustice. In doing so, public health institutions can seed the opportunity to build solidarity from the bottom up. Equipping individuals and communities with resources will foster cooperation and adherence to policies that require solidarity, such as masking and vaccination. This is consistent with arguments illustrating how institutions such as Tribal governments promote the conditions needed for their group, and especially its most vulnerable members, to flourish.[23] Addressing social determinants of health with a social justice lens will create the circumstances under which more individuals and groups can find common causes and foster solidarity. In the long run, such efforts may result in the establishment of values and practices from the bottom up. There are societal and public health preconditions required before institutions can expect their audience to act in solidarity with one another. Through their great influence over information and resources, public institutions do have the power to impact what values are most widespread. Furthermore, public health may foster trust and hope, which are important psychosocial factors that influence collective action,[24] if policies increase access to resources that promote well-being. Messaging efficacy also depends on the context of public trust, education, and whether the institutions meet one’s basic needs. Disparate messaging across different public institutions may confuse or disillusion individuals. To apply our theory of solidarity to the decision to vaccinate, a policy would be to foster conditions that facilitate access to vaccines and information about vaccine efficacy instead of imposing a top-down mandate without first eliciting public trust. IV. Counterargument Some argue that discordant public health messaging, ineffective government, and inadequate social programs can also bring people together under pressure and foster solidarity. One may argue that the most powerful motivators towards solidarity are strife and disparity, as evidenced throughout history. During the pandemic alone, political struggle and personal hardship inspired solidarity in the US, from individual neighbors helping each other to mutual aid groups forming across communities. We thus do not claim that solidarity is possible only when our government programs and public health institutions are most effective. We instead point out that solidarity can be further hindered when people feel alienated, hopeless, and pitted against each other. CONCLUSION Many competing conceptualizations of solidarity persist in the bioethics literature, and Prainsack and Buyx offer one compelling framework that public health ethicists continue to draw upon.[25] However, their framework fails to acknowledge how public health institutions impact interpersonal and group solidarity. Public health institutions can foster solidarity through actions other than mere messaging, invoking catchphrases like “we are all in this together.” Efforts to address socioeconomic preconditions and alleviate health disparities can cultivate group solidarity. As we saw during the pandemic, cooperation and solidarity go hand-in-hand with disease mitigation efforts; solidarity has clear intrinsic value.[26] As this relationship becomes more apparent, we will continue to see attempts from public health institutions to foster or invoke solidarity. Therefore, public health institutions would be remiss to ignore their role in addressing the social determinants of health. Adopting a social justice lens when planning public health interventions will clarify and strengthen their role in facilitating solidarity. Ultimately, if health disparities continue to persist or widen, it is very hard to imagine how group solidarity can ever be achieved. The widescale adoption of many public health measures needed to promote health and well-being would be conducive to solidarity. - Disclaimer: The opinions expressed are the authors’ and do not represent the views of the NIH, DHHS, or the U.S. government. Funding Disclosure: This work was supported in part by the Intramural Program of the National Institutes of Health Clinical Center. - [1] John J Mulvihill et al., “Ethical Issues of CRISPR Technology and Gene Editing through the Lens of Solidarity,” British Medical Bulletin 122 (2017): 17–29, https://doi.org/10.1093/bmb/ldx002; Ben Saunders, “Altruism or Solidarity? The Motives for Organ Donation and Two Proposals,” Bioethics 26, no. 7 (September 2012): 376–81, https://doi.org/10.1111/j.1467-8519.2012.01989.x; -Vanessa Y Hiratsuka, “SPECIAL REPORT: A Critical Moment in Bioethics: Reckoning with Anti-Black Racism through Intergenerational Dialogue A Call for Solidarity in Bioethics: Confronting Anti-Black Racism Together,” 2022, https://doi.org/10.1002/hast.1380. [2] Prainsack and Buyx, Solidarity: Reflections on an Emerging Concept in Bioethics London: Nuffield Council on Bioethics, 2011; Prainsack and Buyx, “Solidarity in Contemporary Bioethics--towards a New Approach.” Bioethics 26, no. 7 (September 2012): 343–50. https://doi.org/10.1111/J.1467-8519.2012.01987.X. [3] Bob Simpson, “A ‘We’ Problem for Bioethics and the Social Sciences: A Response to Barbara Prainsack,” Science, Technology, & Human Values 43, no. 1 (January 12, 2018): 45–55, https://doi.org/10.1177/0162243917735899. [4] Barbara Prainsack and Alena Buyx, Solidarity: Reflections on an Emerging Concept in Bioethics (London: Nuffield Council on Bioethics, 2011). [5] Barbara Prainsack and Alena Buyx, “Solidarity in Contemporary Bioethics--towards a New Approach,” Bioethics 26, no. 7 (September 2012): 343–50, https://doi.org/10.1111/J.1467-8519.2012.01987.X. [6] Bridget Pratt, Phaik Yeong Cheah, and Vicki Marsh, “Solidarity and Community Engagement in Global Health Research,” The American Journal of Bioethics : AJOB 20, no. 5 (May 3, 2020): 43–56, https://doi.org/10.1080/15265161.2020.1745930; Sara Chandros Hull, F. Leah Nez (Diné), and Juliana M. Blome, “Solidarity as an Aspirational Basis for Partnership with Tribal Communities,” The American Journal of Bioethics 21, no. 10 (October 3, 2021): 14–17, https://doi.org/10.1080/15265161.2021.1965258; Mbih J. Tosam et al., “Global Health Inequalities and the Need for Solidarity: A View from the Global South,” Developing World Bioethics 18, no. 3 (September 1, 2018): 241–49, https://doi.org/10.1111/DEWB.12182. [7] Peter West-Oram, “Solidarity Is for Other People: Identifying Derelictions of Solidarity in Responses to COVID-19,” Journal of Medical Ethics 47, no. 2 (February 1, 2021): 65–68, https://doi.org/10.1136/MEDETHICS-2020-106522; Barbara Prainsack, “Solidarity in Times of Pandemics,” Democratic Theory 7, no. 2 (December 1, 2020): 124–33, https://doi.org/10.3167/DT.2020.070215; F. Marijn Stok et al., “Social Inequality and Solidarity in Times of COVID-19,” International Journal of Environmental Research and Public Health 18, no. 12 (June 2, 2021), https://doi.org/10.3390/IJERPH18126339; Ming Jui Yeh, “Solidarity in Pandemics, Mandatory Vaccination, and Public Health Ethics,” American Journal of Public Health 112, no. 2 (February 1, 2022): 255–61, https://doi.org/10.2105/AJPH.2021.306578; Barbara Prainsack, “Beyond Vaccination Mandates: Solidarity and Freedom During COVID-19.,” Am J Public Health 112, no. 2 (February 1, 2022): 232–33, https://doi.org/10.2105/AJPH.2021.306619. [8] Prainsack and Buyx, Solidarity: Reflections on an Emerging Concept in Bioethics London: Nuffield Council on Bioethics, 2011; Prainsack and Buyx, “Solidarity in Contemporary Bioethics--towards a New Approach.” Bioethics 26, no. 7 (September 2012): 343–50. https://doi.org/10.1111/J.1467-8519.2012.01987.X. [9] Prainsack and Buyx, Solidarity: Reflections on an Emerging Concept in Bioethics London: Nuffield Council on Bioethics, 2011; Prainsack and Buyx, “Solidarity in Contemporary Bioethics--towards a New Approach.” Bioethics 26, no. 7 (September 2012): 343–50. https://doi.org/10.1111/J.1467-8519.2012.01987.X. [10] Yeh, “Solidarity in Pandemics, Mandatory Vaccination, and Public Health Ethics”; Prainsack, “Beyond Vaccination Mandates: Solidarity and Freedom During COVID-19.” [11] Ho, Anita, and Iulia Dascalu. "Relational solidarity and COVID-19: an ethical approach to disrupt the global health disparity pathway." Global Bioethics 32, no. 1 (2021): 34-50; West-Oram, Peter. "Solidarity is for other people: identifying derelictions of solidarity in responses to COVID-19." Journal of Medical Ethics 47, no. 2 (2021): 65-68. [12] Monica Webb Hooper, Anna María Nápoles, and Eliseo J. Pérez-Stable, “COVID-19 and Racial/Ethnic Disparities,” JAMA 323, no. 24 (June 23, 2020): 2466, https://doi.org/10.1001/jama.2020.8598. [13] Prainsack, Barbara. “Beyond Vaccination Mandates: Solidarity and Freedom During COVID-19.” Am J Public Health 112, no. 2 (February 1, 2022): 232–33. https://doi.org/10.2105/AJPH.2021.306619. [14] Camille A Clare, “Telehealth and the Digital Divide as a Social Determinant of Health during the COVID-19 Pandemic,” Network Modeling Analysis in Health Informatics and Bioinformatics 10 (2021): 26, https://doi.org/10.1007/s13721-021-00300-y. [15] Patrick Nana-Sinkam et al., “Health Disparities and Equity in the Era of COVID-19,” Journal of Clinical and Translational Science 5, no. 1 (March 16, 2021): e99, https://doi.org/10.1017/cts.2021.23. [16] Kathryn M Leifheit et al., “Expiring Eviction Moratoriums and COVID-19 Incidence and Mortality,” American Journal of Epidemiology 190, no. 12 (December 1, 2021): 2503–10, https://doi.org/10.1093/aje/kwab196. [17] Barbara Prainsack, “Solidarity in Times of Pandemics,” Democratic Theory 7, no. 2 (December 1, 2020): 124–33, https://doi.org/10.3167/DT.2020.070215 [18] Maximilian Agostini and Martijn van Zomeren, “Toward a Comprehensive and Potentially Cross-Cultural Model of Why People Engage in Collective Action: A Quantitative Research Synthesis of Four Motivations and Structural Constraints.,” Psychological Bulletin 147, no. 7 (July 2021): 667–700, https://doi.org/10.1037/bul0000256. [19] Department of Health and Human Services (HHS) Centers for Disease Control and Prevention (HHS/CDC), “COVID Data Tracker,” 2023, https://covid.cdc.gov/covid-data-tracker. [20] Powers, Madison, and Ruth Faden. Social Justice: The Moral Foundation of Public Health and Health Policy. 1st editio. New York: Oxford Press, 2006, p. 9 and Chapter 4 [21] Powers and Faden, Social Justice: The Moral Foundation of Public Health and Health Policy; Madison Powers and Ruth Faden, Structural Injustice: Power, Advantage, and Human Rights (New York: Oxford University Press, 2019). [22] Powers, Madison, and Ruth Faden. Social Justice: The Moral Foundation of Public Health and Health Policy. 1st editio. New York: Oxford Press, 2006, p. 10 [23] Bobby Saunkeah et al., “Extending Research Protections to Tribal Communities,” The American Journal of Bioethics 21, no. 10 (October 3, 2021): 5–12, https://doi.org/10.1080/15265161.2020.1865477. [24] Agostini and van Zomeren, “Toward a Comprehensive and Potentially Cross-Cultural Model of Why People Engage in Collective Action: A Quantitative Research Synthesis of Four Motivations and Structural Constraints.” [25] Prainsack and Buyx, Solidarity: Reflections on an Emerging Concept in Bioethics. [26] Ruth Chadwick, “COVID‐19 and the Possibility of Solidarity,” Bioethics 34, no. 7 (September 8, 2020): 637–637, https://doi.org/10.1111/bioe.12813. (shrink)

Demands for public participation in technical decision-making are currently high on the agenda of Science & Technology Studies. It is assumed that the democratisation of technical decision-making processes generally leads to more socially desirable and acceptable outcomes. While this may be true in certain cases, this assumption cannot be generalised. I will discuss the case of the so-called ‘South African AZT debate’. The controversy started when President Thabo Mbeki, after reading some scientific papers on the toxicity of AZT, decided to (...) bar the use of the drug in the public health sector as a means to reduce the transmission of HIV from mothers to children. While the scientific mainstream accepts the effectiveness of AZT in reducing the risk of vertical HIV transmission, a few maverick scientists reject the clinical evidence and argue that the risks of using AZT by far outweigh its benefits. Based on various textual sources and using the ‘Periodic Table of Expertises’ developed by Collins and Evans, Mbeki’s expertise at the time of his intervention into the technical question whether AZT is a medicine or a poison can be classified as primary source knowledge. It is shown that this type of expertise is insufficient for technical decision-making. Mbeki’s primary source knowledge legitimated his presentation of the claims of maverick scientists as a serious contribution to the debate—with tragic consequences for tens of thousands of babies.Keywords: Primary source knowledge; Expertise; Technical decision-making; South Africa; AZT; AIDS. (shrink)

Song in oscine birds relies upon the rare capacity of vocal learning. Transmission can be vertical, horizontal, or oblique. As a rule, memorization and production by a naïve bird are not simultaneous: the long-term storage of song phrases precedes their first vocal rehearsal by months. While a wealth of detail regarding songbird enculturation has been uncovered by focusing on the apprentice, whether observational learning can fully account for the ontogeny of birdsong, or whether there could also be an (...) element of active teaching involved, has remained an open question. Given the paucity of knowledge on animal cultures, I argue for the utility of an inclusive definition of teaching that encourages data be collected across a wide range of taxa. Borrowing insights from musicology, I introduce the Australian pied butcherbird into the debate surrounding mechanisms of cultural transmission. I probe the relevance and utility of mentalistic, culture-based, and functionalist approaches to teaching in this species. Sonographic analysis of birdsong recordings and observational data of pied butcherbird behavior at one field site provide evidence that I assess based on criteria laid down by Caro and Hauser, along with later refinements to their functionalist definition. The candidate case of teaching reviewed here adds to a limited but growing body of reports supporting the notion that teaching may be more widespread than is currently realized. Nonetheless, I describe the challenges of confirming that learning has occurred in songbird pupils, given the delay between vocal instruction and production, as well as the low status accorded to anecdote and other observational evidence commonly mustered in instances of purported teaching. As a corrective, I press for an emphasis on biodiversity that will guide the study of teaching beyond human accounts and intractable discipline-specific burdens of proof. (shrink)

Monkeys and apes, inhabiting variable environments and subjected to K-selection, exhibit cultural behavior transmitted horizontally and vertically, like cetaceans. Behaviors enhancing better health and nutrition, predator avoidance, or mate selection, can affect differential reproduction.Furthermore, dominance hierarchies and social status not only affect the transmission and acceptance of new behaviors but they may also affect genetic inheritance.

Horizontal transfer (HT) is the transmission of genetic material between non‐mating species, a phenomenon thought to occur rarely in multicellular eukaryotes. However, many transposable elements (TEs) are not only capable of HT, but have frequently jumped between widely divergent species. Here we review and integrate reported cases of HT in retrotransposons of the BovB family, and DNA transposons, over a broad range of animals spanning all continents. Our conclusions challenge the paradigm that HT in vertebrates is restricted to infective (...) long terminal repeat (LTR) retrotransposons or retroviruses. This raises the possibility that other non‐LTR retrotransposons, such as L1 or CR1 elements, believed to be only vertically transmitted, can horizontally transfer between species. Growing evidence indicates that the process of HT is much more general across different TEs and species than previously believed, and that it likely shapes eukaryotic genomes and catalyses genome evolution. (shrink)

Bankruptcy of listed companies or shareholders delisting usually causes the crisis spreading in stock markets. Based on the systematic analysis of the epidemic diseases and rumors spreading on the complex networks, the SIR model is introduced to research the crisis spreading in shareholding networks of listed companies and their main holders on the basis of the data about ownership structure in Chinese Stock Markets. The characteristics of shareholding networks are studied, and the parameters for the SIR model are obtained by (...) empirical approach. Then, the numerical computation method is successfully used to analyze the crisis spreading in the networks when the networks meet random failures or intentional attacks. We find the networks have good robustness against the random failures. However, the crisis will spread at a high speed and cause catastrophic damage if there are some failures or attacks on hub vertices in the networks. Under this condition, the networks show obvious vulnerability. Last but not least, the controllability of the networks under the condition of intentional attacks and random failures is studied. The results show that if the network is controlled globally, it is more reliable to allow a politically good new or an appropriate exciting economical policy to play the role in orienting markets under the control of public opinions as the crisis occurs. However, under normal circumstances, controlling a small part of driver vertices representing listed companies, applying appropriate control strategies, and using its characteristics of high efficiency of sending information can effectively control the stock market. Our research provides a new reference to further exploration about the transmission mechanism of the crisis based SIR model and further research on the controllability of crisis spreading in financial markets. (shrink)

Results of genetic analyses show that social groups of female and immature sperm whales are comprised of multiple matrilines as evidenced by the presence of multiple mitochondrial (maternally inherited) control region haplotypes. These data suggest: (1) a social environment in which the transmission of cultural information, such as vocal dialects, is more likely to be horizontal or oblique rather than strictly vertical (mother-offspring) and (2) lead us to question the data presented to support gene-culture coevolution.