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The G4 virus, also known as the "G4 swine flu virus" (G4) and "G4 EA H1N1", is a swine influenza virus strain discovered in China. [68] The virus is a variant genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. [ 68 ]
The virus is a novel strain of the influenza virus, [2] for which existing vaccines against seasonal flu provided no protection. A study at the U.S. Centers for Disease Control and Prevention (CDC) published in May 2009 found that children had no preexisting immunity to the new strain but that adults, particularly those over 60, had some degree of immunity.
On 17 May, the Chilean Health Minister confirmed, the first case of A(H1N1) flu in Chile, [23] the same day two more cases were confirmed. [24] On 29 May, the Chilean Health ministry confirmed the number of cases of A-H1N1 had risen to 224, [23] the same day two more cases were confirmed. [25] On 3 June Chile had its first confirmed death of ...
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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 virus is a variant genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. [119] A peer-reviewed paper from the Proceedings of the National Academy of Sciences ( PNAS ) stated that "G4 EA H1N1 viruses possess all the essential hallmarks of being highly adapted to ...
On May 10, a 30-year-old man with underlying health problems died in Washington from H1N1, the first fatality in that state. [30] On May 17, 55-year-old Mitchell Wiener, an assistant principal at Intermediate School 238 in Hollis, Queens died from H1N1, making it the first H1N1 related fatality in the state of New York. Wiener suffered from ...
Community outbreaks, June 2009 Confirmed cases by state, June 3, 2009. This article covers the chronology of the 2009 novel influenza A pandemic.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 campaigns ...