Scarlet fever disappeared around the same time, dispite not having a vaccine. Sanitation workers never get enough respect for all the lives they've saved.
Dr. Suzanne Humphries interview on Joe Rogan. She lays out a good outline for the research that she, as a medical doctor, has done on the effectiveness if vaccines over the years.
Proven?
Scarlet fever disappeared around the same time, dispite not having a vaccine. Sanitation workers never get enough respect for all the lives they've saved.
https://www.youtube.com/watch?v=207W1A_bJqI
Dr. Suzanne Humphries interview on Joe Rogan. She lays out a good outline for the research that she, as a medical doctor, has done on the effectiveness if vaccines over the years.