H3N2 no relation influenza
H1N1 caused "Spanish flu" in 1918 and "Swine flu" in 2009.
H2N2 caused "Asian Flu".
H3N2 caused "Hong Kong Flu".
H5N1, "avian" or "bird flu".
H7N7 has unusual zoonotic potential.
H1N2 infects pigs and humans.
H9N2, H7N2, H7N3, H10N7.Influenza B
Influenza B virus is almost exclusively a human pathogen, and is less common than influenza A. The only other animal known to be susceptible to influenza B infection is the seal. This type of influenza mutates at a rate 2–3 times lower than type A and consequently is less genetically diverse, with only one influenza B serotype. As a result of this lack of antigenic diversity, a degree of immunity to influenza B is usually acquired at an early age. However, influenza B mutates enough that lasting immunity is not possible. This reduced rate of antigenic change, combined with its limited host range (inhibiting cross species antigenic shift), ensures that pandemics of influenza B do not occur.Influenza C
The influenza C virus infects humans and pigs, and can cause severe illness and local epidemics. However, influenza C is less common than the other types and usually causes mild disease in children.Influenza D
This is a genus that was classified in 2016, the members of which were first isolated in 2011. This genus appears to be most closely related to Influenza C, from which it diverged several hundred years ago. There are at least two extant strains of this genus. The main hosts appear to be cattle, but the virus has been known to infect pigs as well.
no relation