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Influenza A Virus

New Data from Swedish University of Agricultural Sciences Illuminate Research in Influenza A Virus

Published in Medical Letter on the CDC and FDA, June 19th, 2011

2011 JUN 19 -- "The influenza A virus subtypes H1N1, H1N2 and H3N2 are prevalent in pig populations worldwide. In the present study, two relatively uncommon swine influenza virus (SIV) H1N2 subtypes, isolated in Sweden in 2009 and 2010, were compared regarding their molecular composition and biological characteristics," investigators in Uppsala, Sweden report.

"The differences regarding markers purportedly related to pathogenicity, host adaptation or replication efficiency. They included a truncated PB1-F2 protein in the earlier isolate but a full length version in the more recent one; differences in the number of haemagglutinin glycosylation sites,...

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