| [characteristics of the causative agents of the influenza a (h3n2) epidemic in leningrad in 1983]. | investigation of influenza a (h3n2) epidemic of 1983 in leningrad revealed simultaneous circulation of 3 antigenic variants similar to a/bangkok/1/79, a/bangkok/2/79, and a/philippines/2/82 with significant predominance of the first antigenic variant. the viruses related to a/philippines/2/82 comprising one-third of all isolations produced antibodies of a wide spectrum unlike the other two variants whose antisera neutralize actively the homologous virus only. the possibility of selecting epidemi ... | 1984 | 6235673 |