15 feb 1957 año - Asian Flu: 1957-58
Descripción:
It originated in Hong Kong; a strain of influenza presenting as H2N2 (meaning it's hemagglutinin was type 2 and it's neraminidase was type 2) it ultimately spread across the world and infected one third of the population.
Añadido al timeline:
fecha:
15 feb 1957 año
Ahora mismo
~ 68 years ago
Fotos:
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