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5 jun 1994 año - America declared Polio free

Descripción:

Polio has come back now because of the reluctance of vaccines.

Añadido al timeline:

The history of diseases that changed society, civilization, and life of humans

14 dic 2018

1

0

578

fecha:

5 jun 1994 año

Ahora mismo

~ 31 years ago

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