A significant amount of scientific evidence shows that childhood vaccination constitutes one of the most successful and cost-effective public health interventions of the last century. It has saved millions of lives. Nonetheless, many parents are reluctant or outright hostile to having their children vaccinated. Similarly, in spite of the fact that vaccines against SARS-CoV-2, the virus that causes COVID-19, are highly effective in protecting people against death and serious illness, about a third of adults in the United States are still (...) unvaccinated as of July 2022. What leads people to be skeptical of vaccines or to refuse them altogether?The dominant narrative answering this... (shrink)