feb 15, 1957 - Asian Flu: 1957-58
Description:
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.Added to timeline:
Date:
feb 15, 1957
Now
~ 68 years ago