Influenza A virus subtype H7N9
Subtype of the influenza A virus / From Wikipedia, the free encyclopedia
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Influenza A virus subtype H7N9 (A/H7N9) is a bird flu strain of the species Influenza virus A (avian influenza virus or bird flu virus). Avian influenza A H7 viruses normally circulate amongst avian populations with some variants known to occasionally infect humans. An H7N9 virus was first reported to have infected humans in March 2013, in China.[2] Cases continued to be reported throughout April and then dropped to only a few cases during the summer months. At the closing of the year, 144 cases had been reported of which 46 had died.[3][4][5] It is known that influenza tends to strike during the winter months, and the second wave, which began in October, was fanned by a surge in poultry production timed for Lunar New Year feasts that began at the end of January. January 2014 brought a spike in reports of illness with 96 confirmed reports of disease and 19 deaths.[6][7] As of April 11, 2014, the outbreak's overall total was 419, including 7 in Hong Kong, and the unofficial number of deaths was 127.[8][9][10]
This article's factual accuracy may be compromised due to out-of-date information. (December 2020) |
Influenza A virus subtype H7N9 | |
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Virus classification | |
(unranked): | Virus |
Realm: | Riboviria |
Kingdom: | Orthornavirae |
Phylum: | Negarnaviricota |
Class: | Insthoviricetes |
Order: | Articulavirales |
Family: | Orthomyxoviridae |
Genus: | Alphainfluenzavirus |
Species: | |
Serotype: | Influenza A virus subtype H7N9 |
Date | March 31, 2013 (2013-03-31)–present |
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Location | China: Anhui, Jiangsu, Zhejiang, Hangzhou, Hunan, Jiangxi, Fujian, Beijing, Guangdong Hong Kong Taiwan Malaysia[1] |
Casualties | |
619 deaths (as of 25 October 2017) | |
1622 cases (as of 25 October 2017) |