Influenza B virus
Influenza B virus is the only species in the genus Betainfluenzavirus in the virus family Orthomyxoviridae.
Influenza B virus is only known to infect certain mammal species, including humans, ferrets, pigs, and seals. Wikipedia
Class: Insthoviricetes
Family: Orthomyxoviridae
Genus: Betainfluenzavirus
Order: Articulavirales
Realm: Riboviria
Species: Influenza B virus