<prompt> Recent influenza pandemic was due to which strain?H1N1H5N1H7N7H3N2  <response>: Influenza us cause by Ohomyxovirus 3 types: A, B, C - Type A:MC cause of outbreaks epidemics; only cause of pandemics Examples: H1 N1 Type A - Cause of Swine flu -Recent influenza pandemic H2 N2 Type A H5 N1 Type A -Cause of An influenza Bird flu 