type A influenza virus

It is a species that can be found in both humans and animals. (Types B and C are found only in humans.) It can be divided into subspecies, named after the type of protein found on the surface of the virus. There are two types of such proteins: hemagglutinin and hemagglutinin. (Hemagglutinin, abbreviated H), of which there are 16 subtypes (H1-H16) and neuraminidase. There are nine subtypes (Neuraminidase, abbreviated N) (N1-N9). To designate influenza A viruses, the abbreviation H and N are used, followed by a number at the end of each abbreviation according to the protein type. pgbetflik com