This diagram depicts how the human cases of swine-origin H3N2 influenza virus reported in Indiana and Pennsylvania in September 2011 resulte
This diagram depicts how the human cases of swine-origin H3N2 influenza virus reported in Indiana and Pennsylvania in September 2011 resulted from the reassortment of two different influenza viruses. The Diagram shows three influenza viruses placed side by side, with eight color-coded RNA segments inside of each virus. Note: All influenza viruses contain 8 RNA segments. These RNA segments are labeled HA (hemagglutinin), NA (neuraminidase), PB1, PB2, PA, NP, M and NS.
CDC/ Douglas Jordan, M.A.
June 11, 2012
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