5/6/2023 0 Comments What synonymsIt’s possible that sporadic infections and even localized outbreaks among people with this virus will continue to occur. Limited human-to-human spread of this virus has been detected in the past as well but no sustained or community spread of H3N2v has been identified at this time. Infections with H3N2v have mostly been associated with prolonged exposure to pigs at agricultural fairs. Sporadic infections with H3N2v have continued to be detected since that time. During 2012, there were multiple outbreaks of H3N2v resulting in 309 reported cases. During 2011, 12 human infections with H3N2v were detected. The viruses were first identified in U.S. Influenza A H3N2 variant viruses (also known as “H3N2v” viruses) with the matrix (M) gene from the 2009 H1N1 pandemic virus were first detected in people in July 2011. Influenza viruses that normally circulate in pigs are called “variant” viruses when they are found in people.
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