title: [Analysis of the antigenic properties of strains of influenza virus that caused the epidemic of 1974-1975].
abstract: The etiology of influenza epidemic of 1974-1975 in the USSR was studied. The influenza viruses isolated from patients in the period of the 1974-1975 epidemic were tested in the hemagglutination-inhibition, neuraminidase activity-inhibition, immunoadsorption and biological neutralization tests. The majority of the strains tested were shown to be similar to the new antigenic variant A/Port Chalmers/1/73. It means that the strains of A/Port Chalmers/1/73 variant occurred epidemically in this region only in the winter of 1974-1975. The greatest differences between the new isolates and previously circulating strains of A/England/42/72 variant were observed in biologic neutralization tests.
mesh_terms: D000956:Antigens, Viral; D000939:Epitopes; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007163:Immunosorbent Techniques; D009980:Influenza A virus / Q000276:immunology*; D007251:Influenza, Human / Q000382:microbiology*; D009439:Neuraminidase / Q000378:metabolism; D009500:Neutralization Tests; D014586:USSR
chemical_list: D000956:Antigens, Viral; D000939:Epitopes; D009439:Neuraminidase
vernacular_title: Analiz antigennykh svoĭstv shtammov virusa grippa, vyzvavshikh épidemiiu 1974-1975 gg