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Polio vaccines
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Poliovirus
Vaccines and vaccination
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Polio vaccine - Wikipedia
https://en.wikipedia.org/wiki/Polio_vaccine
Polio vaccines
The Last Time a Vaccine Saved America | The New Yorker
https://www.newyorker.com/science/annals-of-medicine/the-last-time-a-vaccine-saved-america
Covid-19 vaccines
Jonas Salk
Patents and patent law
Polio
Polio vaccines
Thiomersal