3 ms·
Now this is purely hearsay, but I've heard it said the creator of the smallpox vaccine regretted what he'd done because the amount of polio it produced greatly
by yters 16y ago
Now this is purely hearsay, but I've heard it said the creator of the smallpox vaccine regretted what he'd done because the amount of polio it produced greatly outnumbered the lives it saved.
It was on the internet so it must be true!
- scythe 16y agoEdward Jenner introduced the variola vaccine in the late 1700s. Polio didn't even become a major problem until after his death! >In developed countries during the late 19th and early 20th centuries, improvements were made in community sanitation, including better sewage disposal and clean water supplies. These changes drastically increased the proportion of children and adults at risk of paralytic polio infection, by reducing childhood exposure and immunity to the disease. (Edward Jenner died in 1823)