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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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29 abr 1952 ano - The first inactivated polio vaccine

Descrição:

Developed in 1952 by Jonah Salk

Adicionado na linha do tempo:

Global Health History

ByShannon
20 out 2018
0
0
483

Data:

29 abr 1952 ano
Agora
~ 73 years ago
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