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H1N2v Swine Flu in Minnesota

New Swine Flu Variant
Friday September 7, 2012  the Minnesota Department of Health reported human infections of an influenza A H1N2 variant (“H1N2v”) virus with the pandemic M gene from the 2009 H1N1 virus. These cases were reportedly associated with prolonged contact with pigs at a fair. H1N2 viruses normally circulate in pigs. This virus is different from the H3N2v virus. 

The three people infected with the H1N2v virus exhibited pigs or spent prolonged time with pigs at the Minnesota State Fair. Two of the three people had underlying health conditions that placed them at high risk of serious flu complications.

The CDC has confirmed the Minnesota samples as H1N2v viruses. This is the first time this virus has included the M gene from the 2009 H1N1 pandemic virus when isolated from a person. CDC officials also reported genetic analysis shows that the hemagglutinin (H) of this virus is similar to human seasonal influenza viruses that circulated in people as recently as 2007,  thus it is likely  there is protective immunity against this particular virus in the human population.

Last Updated:9/10/2012 4:26 PM
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