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16 avr. 1963 - Polio eradicated in the United States

Description:

The first live-attenuated vaccine for measles was licensed.

Ajouté au bande de temps:

B HLTH 224

14 déc. 2018

1

0

522

Date:

16 avr. 1963

Maintenaint

~ Il y a 62 ans

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