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On 29 April, the US had its first confirmed death, [316] and on 5 May the first US citizen died from swine flu. [317] On 6 June, there were 17 confirmed deaths from swine flu in the US. [318] By mid-May 2009 many states had abandoned testing unless serious illness and/or hospitalization were present. [319]
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, [114] then spreading to infect people in Texas, New York, and other states by mid-April. [115]
The Centers for Disease Control and Prevention (CDC) identified the first two A/09(H1N1) swine flu cases in California on April 17, 2009, via the Border Infectious Disease Program, [135] for a San Diego County child, and a naval research facility studying a special diagnostic test, where influenza sample from the child from Imperial County was tested. [136]
The season’s death toll of 199 matches the 2019-20 flu season, CDC said. The highest death toll recorded was 288 children who died from the flu in the 2009-10 season, at the height of the H1N1 ...
It happened again in 2009, when a human and swine flu switched genes, unleashing the H1N1 swine flu outbreak that killed roughly 500,000 people. Already there is evidence this virus is swapping genes.
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).
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.
First case in the US of what would later be identified as swine flu. 12 April First known death due to what would later be identified as swine flu. 25 April Community outbreaks confirmed in United States. Community outbreaks confirmed in Mexico. 27 April First case confirmed in Canada. 29 April First death confirmed in the United States. 2 May