The piece is more about efficacy than safety. Apparently the Salk vaccine was actually not that effective, and it wasn't until the Sabin vaccine subsequent to the article that the disease really was eradicated.
__________________
My avatar is a sketch by my son who is an art school graduate. Some of his sketches and paintings are at
https://www.jamesspaethartwork.com/
He is available to do custom drawings in graphite, charcoal and other media. He also sells some of his works as note cards/greeting cards on Etsy under JamesSpaethArt.
Last edited by Peter_Spaeth; 05-14-2021 at 06:49 PM.
|