Just reading the first review on Amazon, I’m skeptical. They started with polio and ended with arsenic poisoning.

One (polio) is caused by a virus we have vaccines for. The other (arsenic) is a poison that was readily available and know in 1800s.

There is also misinformation in the description of the book, stating that polio just appeared in 1800s but it was around way before and identified in 1789. https://en.m.wikipedia.org/wiki/Polio

This seems to be some great anti-vaccine propaganda or fear mongering for a few bucks.