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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1957 año - Asian Flu

Descripción:

H2N2. 2 million deaths worldwide; 69,000 in US. Started in China antigen shift - never been seen before. low mortality rate. Maurice Hilleman jump started vaccinne production.

Añadido al timeline:

B HLTH 224

ByKelly Stevens
13 dic 2018
1
0
904

fecha:

1 ene 1957 año
Ahora mismo
~ 68 years ago

Fotos:

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