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1 dic 1968 anni - Hong Kong Flu

Descrizione:

1968-1969. The Hong Kong flu was found to have a new haemagglutinin, H3. It may have infected about a quarter of the world population, the final death toll being around half to one million.

Aggiunto al nastro di tempo:

Data:

1 dic 1968 anni
Adesso
~ 56 years ago