I remember reading that by the time this vaccine came out polio was on its way out. It's about like voting. The lesser of 2 evils.
” From 1916 onward, a polio epidemic appeared each summer in at least one part of the country, with the most serious occurring in the 1940s and 1950s.[1] In the epidemic of 1949, 2,720 deaths from the disease occurred in the United States and 42,173 cases were reported and Canada and the United Kingdom were also affected.[14][15]”
Parents were rightly terrified of Polio. Also measles, and Rubella, Diptheria, Pertussis. Thank God for Vaccines.