[Characteristics of the distribution of influenza A and B in various geographical regions of the USSR].
The results of a comparative analysis of laboratory-confirmed cases of influenza A and B recorded annually in October-May from 1977 to 1981 in four towns located in different geographical regions of the country are reported. During this period, influenza A represented by varieties A (H1N1) and A (H3N2) and B were found to have been recorded in all the towns under study. The periods of the maximum number of the laboratory-confirmed cases recorded coincided generally with the periods of increased clinical incidence of ARD. There were instances, however, when during the periods of elevated ARD morbidity the number of laboratory-confirmed cases of influenza increased insignificantly. Peculiar features were found in fluctuations of the incidence of laboratory-confirmed influenza cases in different geographical regions of the country.
D004196:Disease Outbreaks / Q000453:epidemiology; D005843:Geography; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D012621:Seasons; D014586:USSR; D014505:Urban Population
Osobennosti rasprostraneniia grippa A i B v raznykh geograficheskikh raĭonakh SSSR.