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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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7 Sept 1952 Jahr - Salk created first Polio Vaccine
Beschreibung:
This vaccine carries inactivated polio and an infection is needed.
Zugefügt zum Band der Zeit:
The history of diseases that changed society, civilization, and life of humans
By
ianop44
14 Dez 2018
1
0
575
Datum:
7 Sept 1952 Jahr
Jetzt
~ 73 years ago
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