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Influenza A Virus, H2N2 Subtype
H2N2 Viruses; Virus, H2N2; Viruses, H2N2
A subtype of
INFLUENZA A VIRUS
comprised of the surface
proteins
hemagglutinin 2 and
neuraminidase
2. The H2N2 subtype was responsible for the Asian flu pandemic of 1957.