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Swine influenza is an infection caused by any of several types of swine influenza viruses. 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 ]
Swine influenza virus is common throughout pig populations worldwide. Transmission of the virus from pigs to humans is not common and does not always lead to human influenza, often resulting only in the production of antibodies in the blood. If transmission does cause human influenza, it is called zoonotic swine flu or a variant virus. People ...
The pandemic H1N1/09 virus is a swine origin influenza A virus subtype H1N1 strain that was responsible for the 2009 swine flu pandemic. This strain is often called swine flu by the public media due to the prevailing belief that it originated in pigs.
That is exactly what happened with the 2009 H1N1 swine flu and the Spanish flu of 1918 pandemics. Influenza A subtypes. Influenza A (but not B) also has subtypes labeled H and N. These refer to ...
Influenza A(H1N2)v is similar to flu viruses currently circulating in pigs in the UK
The UK’s first human case of swine flu strain H1N2 has been detected, the UK Health Security Agency (UKHSA) ... The strain which caused the 2009 pandemic - influenza A H1N1(pdm09) - now ...
Influenza is typically characterized by seasonal epidemics and sporadic pandemics. Most of the burden of influenza is a result of flu seasons caused by influenza A virus and influenza B virus. Among influenza A virus subtypes, H1N1 and H3N2 circulate in humans and are responsible for seasonal influenza.
The 2009 swine flu pandemic, caused by the H1N1/swine flu/influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, was the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu).