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influenza A virus
Pronunciation
Definition 1
One of three types of virus that cause the illness called influenza (flu). The influenza A virus can infect people, birds, pigs, horses, and other animals. It is the main cause of most influenza epidemics. (NCI Dictionary)
Definition 2
A negative-strand linear single-strand RNA virus with an 8 segment genome. Virions are enveloped and usually spherical or pleomorphic, 80-120 nm in diameter. Subtyping is based on the antigenic properties of the hemagglutinin and neuraminidase proteins. Influenza type A viruses can infect people, birds, pigs, horses, and other animals, but wild birds are the natural hosts for these viruses. (NCI Thesaurus)
Definition 3
Any viral organism that can be assigned to the species Influenza A virus. (NCI Thesaurus/CDISC)
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