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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 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.
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 ).
United States influenza statistics by flu season. US influenza statistics by flu season. From the Centers for Disease Control and Prevention page called "Disease Burden of Flu": "Each year CDC estimates the burden of influenza in the U.S. CDC uses modeling to estimate the number of flu illnesses, medical visits, hospitalizations, and deaths ...
More than a dozen states have seen a surge in respiratory illness cases in recent months, including flu, Covid-19, and respiratory syncytial virus (RSV), with rates of infections either “high ...
A semi-logarithmic chart of laboratory-confirmed A(H1N1) influenza cases by date according to WHO reports. Mexico, USA, and Canada are shown as a breakdown of the total. In the United States, initial reports of atypical flu in two individuals in southern California led to the discovery of the virus by the Center for Disease Control in
A recent U.K. case of a strain of swine flu new to humans ... during the H1N1 bird flu pandemic of 2009, during which other strains of flu and RSV “disappeared” for a time, as Osterholm points ...
Even more rarely, the virus transmits from an infected human to other humans, as was the case during the H1N1 pandemic of 2009. The H1N1 flu virus was a combination of bird, swine, and human flus ...