| heterogeneity of influenza b virus strains isolated in a local area of the disease during an influenza outbreak. | ten strains of influenza b virus isolated in a local focus during an influenza outbreak were found to include 9 virus strain variants as demonstrated by different antigenicity of their haemagglutinin, ts-marker, sensitivity to heating at 56 degrees c/30 min, and to non-specific serum inhibitors. these strains induced antibodies in rats which interacted more actively with the virus isolated in earlier periods of this outbreak than with that isolated later. it might indicate that all strains origi ... | 1990 | 1975979 |
| [detection of influenza virus a antigens by radioimmunological methods in patients' nasopharyngeal washings]. | 9olid-phase radioimmunoassay (spria) was used for the detection of influenza a (h3n2,h1n1) and b viruses in nasopharyngeal washings of patients admitted in january-march, 1983, to the 1st clinical hospital of moscow city with acute respiratory diseases. the solid phase consisted of nitrocellulose filters and plastic plates which were coated with nasopharyngeal washings of the patients. rabbit or horse antiviral immunoglobulins were used as antibodies. 125i-labeled protein a was the indicator sys ... | 1984 | 6495704 |
| [the incidence of detecting influenza virus antigens in the peripheral blood lymphocytes of donors in relation to the epidemic activity of influenza viruses a and b]. | antigens of influenza a and b viruses in the peripheral blood lymphocytes of normal human subjects are found regularly both in epidemic and interepidemic periods. the level of detection of viral proteins in lymphocytes varies widely and correlates with the epidemic activity of the viruses. influenza virus antigens were found several months before a rise in the incidence of the disease, the per cent ratio of the identified antigens correlating with the pattern of antigen detection in nasopharynge ... | 1993 | 8236937 |
| [epidemic strains influenza viruses a and b in the 2005-2006 season in russia]. | investigations indicated that the epidemic upsurge of influenza morbidity in the 2005-2006 season in russia was caused by the active circulation of influenza viruses a and b. the center for ecology and epidemiology of influenza, d. i. ivanovsky institute of virology, russian academy of medical sciences, studied 182 epidemic strains. a hundred and thirteen influenza viruses a(h3n2) were similar to the reference a/california/07/2004 or were its antigenic variants. thirteen influenza virus a(h1n1) ... | 2008 | 18756810 |