Serological epidemiological studies with influenza A viruses
نویسندگان
چکیده
منابع مشابه
Serological Studies of Swine Influenza Viruses
1. Cross-neutralization tests with sera from swine recovered from infection with swine influenza indicated the serological identity of 7 strains of swine influenza virus obtained from different sources. 2. Cross-neutralization tests with sera from rabbits, immunized to swine influenza virus, exposed serological differences among the same 7 swine influenza virus strains. Two strains appeared to ...
متن کاملGenetic Studies of Influenza Viruses
The passage of newly isolated, filamentous Asian (A2) influenza viruses in the presence of non-infective PR8 (A) virus results in the rapid emergence of virus of Asian (A2) antigenicity but PRS-like growth capacity and spherical morphology. Evidence is presented that this effect results from genetic interaction of the infective Asian and non-infective PR8 viruses rather than from spontaneous ch...
متن کاملSerological analysis reveals circulation of influenza C viruses, Brazil.
The circulation of influenza C viruses in Rio de Janeiro, Brazil, was studied when significant levels of antibodies were detected (56. 7%) with hemagglutination inhibition test, used as a standard methodology for influenza virus studies.
متن کاملSerological Studies on Influenza during a Nine-month Period.
The anticipated influenza B epidemic materialized late in November, 1945 and reached its peak during the month of December. Sporadic cases were recognized in the United States (1) for a period of some months preceding the actual epidemic. The importance of recognizing this preepidemic period is unquestionably a necessity in order to avail ourselves of the prepared vaccines. It has been demonstr...
متن کاملEpidemiological impact of recent influenza viruses in various countries.
During recent years, although influenza B has given rise to epidemics every 3-5 years, influenza A has caused greater concern to those responsible for the surveillance of the disease. The usual cycle of influenza A waves every 2 or 3 years was modified in many countries by the yearly appearance of new variants of the virus A/Hong Kong/68 (A/England/42/72, A/Port Chalmers/1/73). However, a numbe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Epidemiology and Infection
سال: 1965
ISSN: 0950-2688,1469-4409
DOI: 10.1017/s0022172400045368