Arbovirus infections in Ceylon

The haemagglutination-inhibition test has been used to assess the frequency of arbovirus infections in the population of Ceylon, by age-group, and also in some animals. The antigens used were: chikungunya, JE, dengue 1, 2, 3, 4, and Tahyna.The percentage of positive reactors to the group-B viruses r...

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Bibliographic Details
Published inBulletin of the World Health Organization Vol. 41; no. 2; pp. 243 - 249
Main Authors Vesenjak-Hirjan, J, Hermon, Y, Vitarana, T
Format Journal Article
LanguageEnglish
Published Switzerland 1969
Subjects
Adolescent
Adult
Age Factors
Aged
Animal Diseases - diagnosis
Animals
Antigen-Antibody Reactions
Antigens - administration & dosage
Arbovirus Infections - diagnosis
Arbovirus Infections - epidemiology
Arbovirus Infections - veterinary
Cattle
Child
Child, Preschool
Emigration and Immigration
Hemagglutination Inhibition Tests
Humans
Infant
Infant, Newborn
Middle Aged
Rural Population
Sri Lanka
Urban Population
Yugoslavia
Sri Lanka
Yugoslavia
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Summary:The haemagglutination-inhibition test has been used to assess the frequency of arbovirus infections in the population of Ceylon, by age-group, and also in some animals. The antigens used were: chikungunya, JE, dengue 1, 2, 3, 4, and Tahyna.The percentage of positive reactors to the group-B viruses ranged from 16.3% to 84.6% and was lower in the mountainous part of the country. Infections with the chikungunya (group-A) virus were less frequent (from 0 to 37%) and were considered to be recent infections. The prevalence of antibodies was found to increase with age.From a comparison of the antibody titres of the indigenous Ceylonese population with those of a group of immigrant Yugoslav workers it was concluded that a titre of 1:640 would represent a significant titre for a recent infection.The animals examined included goats, cattle, bandicoots, pigs and sheep; virus infections were most frequent in the bandicoots, pigs and sheep.
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ISSN:0042-9686
1564-0604