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Hong Kong Flu (dec 31, 1968 – dec 31, 1969)

Description:

An influenza outbreak in Hong Kong between 1968 and 1969. It was caused by an H3N2 strain of the influenza A virus, descended from H2N2 through antigenic shift.

Added to timeline:

Date:

dec 31, 1968
dec 31, 1969
~ 12 months