Arbovirus infections in man in British Columbia.
During the summer of 1971, the first laboratory-proved cases of acute encephalitis in man due to any of the known arboviruses occurred in the south-central region of British Columbia. Five human cases of encephalitis with two deaths were diagnosed; three of these patients, including one of the fatalities, were proven in the laboratory to have contracted western equine encephalitis.During 1968 and 1969, a human serum survey undertaken in approximately 2000 life-long residents of the province discovered low levels of hemagglutinin-inhibiting and/or complement-fixing as well as neutralizing antibodies for western equine encephalitis, St. Louis encephalitis, Powassan encephalitis, California encephalitis and Colorado tick fever. Evidence of recent sub-clinical infection was detected in some cases.
D000293:Adolescent; D000328:Adult; D000818:Animals; D001102:Arbovirus Infections / Q000453:epidemiology*; D001103:Arboviruses / Q000276:immunology; D001921:Brain / Q000382:microbiology; D001955:British Columbia; D002648:Child; D003121:Colorado Tick Fever / Q000453:epidemiology / Q000276:immunology; D003168:Complement Fixation Tests; D004665:Encephalitis Virus, St. Louis / Q000276:immunology; D004667:Encephalitis Virus, Western Equine / Q000276:immunology / Q000302:isolation & purification; D004671:Encephalitis, Arbovirus / Q000453:epidemiology / Q000276:immunology; D004683:Encephalomyelitis, Equine / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D006385:Hemagglutination Inhibition Tests; D006736:Horses; D006801:Humans; D008297:Male; D009500:Neutralization Tests