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Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) refers to any strain of the influenza family of viruses that is endemic in pigs. [2] As of 2009, identified SIV strains include influenza C and the subtypes of influenza A known as H1N1 , H1N2 , H2N1, H3N1 , H3N2 , and H2N3 .
Pigs can harbor influenza viruses adapted to humans and others that are adapted to birds, allowing the viruses to exchange genes and create a pandemic strain. A 2007 study reported: "In swine, three influenza A virus subtypes (H1N1, H3N2, and H1N2) are circulating throughout the world. In the United States, the classic H1N1 subtype was ...
All influenza A virus pandemics since the 1900s were caused by Avian influenza, through Reassortment with other influenza strains, either those that affect humans (seasonal flu) or those affecting other animals (see 2009 swine flu pandemic). [35] The serotypes that have been confirmed in humans, ordered by the number of confirmed human deaths, are:
CHICAGO (Reuters) -H5N1 bird flu was confirmed in a pig on a backyard farm in Oregon, the first detection of the virus in swine in the country, the U.S. Department of Agriculture said on Wednesday.
Influenza A(H1N2)v is similar to flu viruses currently circulating in pigs in the UK. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
A person from Ingham County has a confirmed case of swine flu, the Michigan Department of Health and Human Services said Friday. “While we believe this is an isolated case, Michigan residents ...
Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms begin one to four (typically two) days after exposure to the virus and last for about two to eight days.
The G4 virus, also known as the "G4 swine flu virus" (G4) and "G4 EA H1N1", is a swine influenza virus strain discovered in China. [68] The virus is a variant genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. [68]