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feb 28, 1237 - Vaccine
Description:
John Enders and his colleagues transform a strain of Measles virus into a vaccine and license it in the United States.
(from https://www.cdc.gov)
Added to timeline:
A Timeline Of Mankind's Worst Enemy
By
Aron Kifle
14 Dec 2018
1
0
558
Date:
feb 28, 1237
Now
~ 789 years ago
Images:
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