On Monday, Buffalo Bills safety Damar Hamlin suffered a cardiac arrest after a tackle. The most likely diagnosis is commotio cordis, cardiac arrest after chest trauma. That didn’t stop antivaxxers from undergoing all-too-familiar contortions to blame it on vaccines.
In 2008, I tried to answer the question: How do doctors become contrarians, quacks, and antivaxxers? A Twitter encounter suggested to me not just answers but that an update to that post is massively overdue.