
Keywords: واحد هموگلوبین; HA; hemagglutinin; NA; neuraminidase; HI; hemagglutination inhibition; HAU; hemagglutination unit; MN; microneutralization; LD50; 50% lethal dose; PFU; plaque forming unit; Influenza virus; Infection; Antigenic drift; Vaccine efficacy; Pandemic H1N1;