Word: h3n2
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Dates: during 1970-1979
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Virologists have now rechristened flu viruses, using the initials H and N for the two protein spikes and numbering their major changes. Thus the last major shift, the Hong Kong flu of 1968, becomes H3N2. But within each such shift minor changes known as drift can occur, and the last two of the five H3N2 drifts are A/Victoria and A/Texas...