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Bookmark or Share- Influenza A virus subtype H3N2 - WikipediaInfluenza A virus subtype H3N2 (A/H3N2) is a subtype of viruses that causes influenza (flu). H3N2 viruses can infect birds and mammals. In birds, humans, and pigs, the virus has mutated into many strains. In years in which H3N2 is the predominant strain, there are more hospitalizations.
- This is an official CDC HEALTH ADVISORYA(H3N2) viruses evolve more rapidly to escape human immunity. The influenza A(H3N2) component of this season’s vaccines was recently updated in response to the evolution of a new group of viruses called 2a (i.e., 3C.2a1b.2a) that did not circulate widely last year and were not included in last season’s H3N2
- H3N2 influenza viruses in humans: Viral mechanisms, evolution, and ...Since their introduction to the human population in 1968, H3N2 Influenza viruses have rapidly evolved both genetically and antigenically in an attempt to escape host immune pressures.
- Influenza A (H3N2) Variant Virus | CDCInfluenza A H3N2 variant viruses (also known as “H3N2v” viruses) with the matrix (M) gene from the 2009 H1N1 pandemic virus were first detected in people in July 2011. The viruses were first identified in U.S. pigs in 2010. During 2011, 12 human infections with H3N2v were detected.
- New CDC Study Looks at Flu Severity by Virus Type and SubtypeCompared to hospitalizations with flu A (H3N2) virus, people hospitalized with flu B virus were: 6% more likely to be admitted to the ICU. 14% more likely to receive MV/ECMO. 18% more likely to die.
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