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by mansr 2046 days ago
Early polio vaccines did.
1 comments

Source? I skimmed through "History of polio vaccination" [1] and didn't see anything about that.

1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3782271/

I happened to read it here recently: https://www.theatlantic.com/magazine/archive/1957/02/how-goo... No, that's not a scholarly article.