| [analysis of the antigenic properties of hemagglutinins of isolates of the influenza a virus (h1n1), isolated in 1986 in the byelorussian ssr]. | the influenza epidemic occurring in minsk in the autumn of 1986 was caused by at least two drift variants of influenza a virus (h1n1 subtype) differing in two antigenic determinants of hemagglutinin from the viruses isolated in previous years (a/ussr/90/77, a/dunedin/6/83). one of the epidemic drift variants was found to be identical in the antigenic properties of hemagglutinin with the reference a/taiwan/1/86 virus. | 1989 | 2480024 |
| [the etiological structure of acute respiratory infectious morbidity based on the data from a rapid diagnosis in minsk]. | examination of 60,792 residents of minsk in different seasons of 1977-1989 by indirect immunofluorescence showed this method to be able of recoding not only mono- but also polyetiological epidemics. the epidemic threshold for influenza a is 15% of positive findings, for influenza b is 7-8%, for polyetiological epidemics (influenza a and b) is 15-16% and 9-10%, respectively. the criterion of the epidemic situation in the city is a twofold increase (or higher) in the level of influenza a and b vir ... | 1993 | 8303892 |