Swine influenza (aka swine flu) is an infection by any one of several types of swine influenza virus. Swine influenza virus (SIV) or S-OIV (swine-origin influenza virus) is any strain of the influenza family of viruses that is endemic in pigs. As of 2009, the known SIV strains include influenza C and the subtypes of influenza A known as H1N1, H1N2, H3N1, H3N2, and H2N3.
FDA Approves Vaccines for 2010-11 Flu Season
FDA Approves Vaccines for 2010-11 Flu Season
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