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The United States experienced the beginnings of a pandemic of a novel strain of the influenza A/H1N1 virus, commonly referred to as "swine flu", in the spring of 2009.The earliest reported cases in the US began appearing in late March 2009 in California, then spreading to infect people in Texas, New York, and other states by mid-April.
Reported cases by state/territory. The 2009 flu pandemic in the United States was caused by a novel strain of the Influenza A/H1N1 virus, commonly referred to as "swine flu", that was first detected on 15 April 2009. [114] While the 2009 H1N1 virus strain was commonly referred to as "swine flu", there is no evidence that it is endemic to pigs ...
The 2009 swine flu pandemic, caused by the H1N1/swine flu/influenza virusand 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 flupandemic and the second being the 1977 Russian flu). [12][13]The first identified human ...
In the 2009 swine flu pandemic, researchers observed that strains in humans were similar to those seen in pigs – which is how swine flu derives its common name. It would be more appropriate to ...
The markets responded last week to the outbreak of swine flu that started in Mexico and expanded to the U.S and now it is officially a pandemic. Swine flu has reached 74 countries, infecting ...
Influenza (flu) 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. The virus is believed to have originated around September 2008 in central Mexico.
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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] As of 2009, identified SIV strains include influenza C and the subtypes of influenza A known as H1N1 ...