Swine Influenza Disease

Swine influenza is infection caused of several types of swine influenza viruses.

Swine influenza is an infection caused by any one of several types of swine influenza viruses. Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) 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, H2N1, H911,H3N1, H3N2, and H2N3. The Swine flu was initially seen in humans in Mexico in 2009, where the strand of the particular virus was a marriage of 3 types of strands. Six of the genes are very similar to the H1N2 influenza virus that was found in pigs around 2000.