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Swine influenza was first proposed to be a disease related to human flu during the 1918 flu pandemic, when pigs became ill at the same time as humans. [69] The first identification of an influenza virus as a cause of disease in pigs occurred about ten years later, in 1930. [ 70 ]
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).
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.
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 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]
Community outbreaks, June 2009 Confirmed cases by U.S. state, June 3, 2009. This article covers the chronology of the 2009 novel influenza A pandemic. [1]Flag icons denote the first announcements of confirmed cases by the respective nation-states, their first deaths (and other major events such as their first intergenerational cases, cases of zoonosis, and the start of national vaccination ...
Maldives reported swine flu in early 2017; [58] [better source needed] 501 people were tested for the disease and 185 (37%) of those tested were positive for the disease. Four of those who tested positive from these 185 died due to this disease.
On April 29, the US suffered its first confirmed death of swine flu. On April 28, the Centers for Disease Control and Prevention had officially confirmed through tests that a 23-month-old child was infected with the flu. When the sickness continued to worsen the next day, he was transferred to Texas Children's Hospital in Houston, where he died.