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Variant Influenza A (H3N2v and H1N2v)

Variant influenza A H3N2 virus does not usually infect people but occur in pigs, and are very different from human seasonal H3N2 viruses. Similarly, the variant influenza A H1N2 virus strain is different from the human seasonal H1N2 virus.

Updated Tuesday, March 10, 2015 at 03:05PM