“Prior to the 1950s, paralytic polio was a scourge.  FDR was crippled from it while in his 30s, the March of Dimes was started to combat it, and photos of rows and rows of children in iron lungs were common in the media.  From this situation, vaccines were developed to combat the disease.”

Recommended!

https://www.americanthinker.com/blog/2021/08/what_the_polio_vaccines_can_teach_us_about_the_covid_ones.html