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6 agos 1950 año - Polio outbreak

Descripción:

first one was in vermont
illness of patients who died from this disease
before the vaccine was available 15000 cases of paralysis

Añadido al timeline:

new disease

14 dic 2018

1

0

412

fecha:

6 agos 1950 año

Ahora mismo

~ 73 years ago

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