At present following types of influenza viruses are circulating in the world, except -
INFLUENZA Causative agent : Ohomyxovirus, 3 types: A, B, C Type A: MC cause of outbreaks/epidemics; Only cause of pandemics Type B Type C: Not circulating currently Currently circulating influenza viruses in world H1NI (Type A) - Cause of Swine Flu H2N2(Tpye A) H5N1(Type A) - Cause of An influenza (Bird flu) H3N2 H7N9 H5N6 Type B Ref: Park 25th edition Pgno : 169-171
H1N1
H3N2
Type C virus
Type B virus
Communicable diseases