It's a good read, Prof. Tim Noakes recommended it on Twitter, and since he's highly regarded in the carnivore community, I decided to give it a shot (no pun intended). The book will explain all the details you need to know about vaccines. 

 the book you were referring to, Fernando, namely - 
the "Turtles all the way down"? 

 Yeah, it's this one. https://image.nostr.build/a4a11756590e389b078ad5c3f7c35ef14841b0f93da84b2a1f709d8492f87e5d.jpg 

 got it. thanks!