At a low but consistent frequency, I see a remark on Twitter or Facebook like: “So, where were all yahoos objecting to the Polio vaccine??!!11!!?? That is a disease we wiped out with a vaccine, that could not have happened if antivax existed then!”

This would be a reasonable lament were it true. I recently read, in Chernov’s Washington: A Life, that George Washington was anti-vax, before he changed his mind based on evidence made clear to him, and then became pro-vax. That was in relation to smallpox, and the “vaccine” was actually “variolation,” which is to modern vaccines what a camel is to a modern RV. Same idea, different technology. Continue reading History vs Now →