Hello? No, sorry, it's Jack here. Not Smallpox or Polio.
Those vaccines are great, and I'm vaccinated for both of them, as is my my only child.
Look at these articles from the WHO and NIH. Yes, small pox killed millions over the centuries. Polio killed thousands in the last century.
Malnutrition and bad sanitation? Hundreds of millions at least over the centuries. Probably billions. It isn't close.
https://www.who.int/news-room/spotlight/history-of-vaccination/history-of-polio-vaccination
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1069029/
This isn't saying we shouldn't vaccinate. It is saying we should be looking at clean water, waste removal (and processing) and healthy food FAR more than another phamaceutical product to improve the lives of Americans.