Immunity of Villagers of La Guajira, Colombia, in April 1963 to the Virus of Venezuelan Encephalitis,
Abstract
Blood samples were taken from 163 persons in La Guajira in April, 1963, about four to five months after an epidemic of Venezuelan encephalitis. It was found that 66.9% of those tested had antibodies against the virus. There was a significant difference between the proportion of immune persons among those who had the disease at the time of the epidemic (72.3%) and among those who had no symptoms of illness at that time (52.3%). The study of the hemagglutination inhibitor titre and of the proportion of position reactions to the complement-fixation test seems to confirm the Venezuelan etiology of the epizootic and epidemic of 1942. The results of tests made with antigens of eastern encephalitis and St. Louis encephalitis, and of six influenza antigens, indicate that these viruses had nothing to do with the 1962 epidemic. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 18, 1971
- Accession Number
- AD0889231
Entities
People
- Carlos Sanmartin
- Normando Arbelaez