[Antigenic and biological properties of strains of influenza viruses isolated during the 1957 epidemic in Peking, Chanzyako, and Goyan].
D006801:Humans; D009975:Orthomyxoviridae
INFLUENZA VIRUSES
Antigennye i biologicheskie svoistva shtammov virusa grippa, vydelennykh vo vremia vspyshki 1957 g. v Pekine, Chzhan'ziako i Loiane.