re: #390 allegro
Are you sure that isn’t a smallpox vaccine? I have a similar scar on my thigh from one. As I recall, the polio vaccine was developed and introduced in the late 50s and it was an oral vaccine. I remember standing in line with my mom and my brother at the county courthouse to get our doses. It was a BFD. We knew many people who had suffered from the disease including children fated to life in iron lungs. Horrid disease.
Sounds like smallpox too, but the first Salk polio vaccine was a shot (my generation). Sabin’s oral vaccine was later.