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Epidemiology of bancroftian filariasis in three suburban areas of Matara, Sri Lanka

Show simple item record Weerasooriya, M.V. en_US Weerasooriya, T.R. en_US Gunawardena, N.K. en_US Samarawickrema, W.A. en_US Kimura, E. en_US 2014-10-29T09:19:20Z 2014-10-29T09:19:20Z 2001 en_US
dc.identifier.citation Annals of Tropical Medicine and Parasitology. 2001; 95(3): pp.263-73 en_US
dc.identifier.issn 0003-4983 (Print) en_US
dc.identifier.issn 1364-8594 (Electronic) en_US
dc.description Indexed in MEDLINE
dc.description.abstract The epidemiological parameters of bancroftian filariasis were investigated in three suburbs of Matara, within the south-western coastal belt of SriLanka where the disease is endemic. The overall prevalence of microfilaraemia and the geometric mean density of the microfilaraemias observed were 4.4% and 20.6 microfilariae/60 microl fingerprick blood, respectively. Prevalence was significantly lower in the female subjects than in the male, and in males aged < 20 years than in older males. Overall, 9.5% of the subjects had the clinical manifestations of bancroftian filariasis (6.4% had filarial fever, 3.0% had elephantiasis and/or oedema, and 6.2% had hydrocele). The prevalence of elephantiasis/oedema was generally higher among the female subjects (4.2%) than among the male (1.4%), and an age-prevalence plot for this manifestation showed a linear increase in prevalence after the age of 40 years. Hydrocele also became commoner with increasing age, but this increase in prevalence began at the lower age of 20 years. More than 60% of the cases of elephantiasis/oedema but only 26.3% of the subjects found to have hydroceles experienced filarial fever attacks. The cases of fever and elephantiasis/oedema (but not those of microfilaraemia or hydrocele) were aggregated within households. However, the children whose mothers were microfilaraemic were much more likely to be microfilaraemic themselves (8.7%) than the children who had amicrofilaraemic mothers (2.8%), microfilaraemic fathers (0.0%) or amicrofilaraemic fathers (2.7%). The results of entomological surveys indicated that transmission of Wuchereria bancrofti occurred throughout the year in the study community.
dc.publisher Academic Press en_US
dc.subject Filariasis en_US
dc.title Epidemiology of bancroftian filariasis in three suburban areas of Matara, Sri Lanka en_US
dc.type Article en_US
dc.identifier.department Parasitology en_US
dc.creator.corporateauthor Liverpool School of Tropical Medicine en_US

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