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April 1, 2024
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feb 22, 1979 - No Polio in US
Description:
By 1979, there was no wild polio in the United States due to vaccines.
Added to timeline:
14 Dec 2018
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401
History of Pathogens
BHLTH 224 Infectious Disease Timeline
Date:
feb 22, 1979
Now
~ 45 years ago