50 years ago, a flu pandemic spurred vaccine research

Excerpt from the September 21, 1968 issue of Science News

1968 Hong Kong pandemic flu strain

MAKING THE ROUNDS  The influenza strain responsible for the Hong Kong flu pandemic of 1968, called H3N2 (shown here in a colorized microscope image), was also responsible for 2017–18’s severe flu season.

Dr. Fred Murphy/CDC, adapted by E. Otwell

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