Usually classified using an H-x-N-y notation, and occurring in Moscow, Hong Kong, and Spanish varieties, FTP, name these orthomyxoviridae which cause the flu.
These viruses share a family with infectious salmon anemia virus and thogotovirus. Their genome encodes the M2 ion transporter protein, which is the target of amantadine and is responsible for uncoating the virus upon infection. Human forms of these viruses have a lysine residue at position 627 of its PB2 protein, and these viruses consist of 7 or 8 different negative-sense RNA that can reassort in a carrier. Zanamvir and ostelamvir interferes with these viruses ability to bind to and process sialic acid residues on cell surfaces, which is performed by hemagglutinin and neuraminidase, respectively. Usually classified using an H-x-N-y notation, and occurring in Moscow, Hong Kong, and Spanish varieties, FTP, name these orthomyxoviridae which cause the flu.
These viruses share a family with infectious salmon anemia virus and thogotovirus.
Influenza virus (Accept more specific answers, eg "Spanish flu", "Avian flu" until "reassort" and "Orthomyxoviridae" until mention)