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DC Field | Value | Language |
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dc.contributor.author | Hapangama, H.A.D.C. | |
dc.contributor.author | Hapugoda, M.D. | |
dc.contributor.author | Gunawardene, Y.I.N.S. | |
dc.contributor.author | Premaratna, R. | |
dc.contributor.author | Dayanath, M.Y.D. | |
dc.contributor.author | Abeyewickreme, W. | |
dc.date.accessioned | 2015-08-18T20:54:42Z | |
dc.date.available | 2015-08-18T20:54:42Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Proceedings of the International Symposium on Infectious Disease and Health Science. 2007; 2: 14 | en_US |
dc.identifier.uri | http://repository.kln.ac.lk/handle/123456789/9229 | |
dc.description | Oral Presentation Abstract, Proceedings of the 2nd International symposium on infectious diseases and Health Sciences, 26-27 July 2007, Peradeniya Sri Lanka | en_US |
dc.description.abstract | The global incidence of dengue fever has increased by more than four-folds over the last 30 years, making it the most threatening mosquito-borne viral disease at present. Objective of this study is to determine the role of silent transmission •on' incidence of dengue. A total of 40 households, living within a 300 m radius of seven selected ‘confirmed dengue cases at different dengue high risk localities in Gampaha District were recruited for this study. A minimum of three inhabitants were tested for anti-dengue antibodies using a commercial kit to determine the prevalence of silent transmission on dengue infection in each households. Entomological surveillance was carried out in all seven localities. Out of 40 households, 26 (65%) houses were positive for dengue viral infection. Total of 148 inhabitants (68 Males); mean age; 35.9 years were enrolled. Of the 148, 41 (27.7%) had evidence of exposure to dengue virus [positive for IgM: 28/41(68.4%), IgM'& IgG: 7/41(17%) and IgG: 6/41(14.6%)]. Out of 28 primary infections, 20(71.4%) were asymptomatic. Of the 7 secondary infections, 1(14.28%) was asymptomatic. Of the 6 previous exposures to dengue 4(66.67%) were asymptomatic. Of the 7 localities investigated, 1 had >50%, 4 had >25% and 2 had <25% clustering of cases. Ae. albopictus found in all seven localities and Ae. aegypti found only in two localities. This study suggests presence of silent transmission of dengue virus with a trend towards clustering around cases and also this shows that the presence of vectors increases the incidence of dengue. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Faculty of Veterinary Medicine and Animal Science, University of Peradeniya | en_US |
dc.subject | Dengue | en_US |
dc.subject | Dengue Virus | en_US |
dc.subject | Prevalence | en_US |
dc.subject | Insect Vectors | en_US |
dc.subject | Aedes | en_US |
dc.title | Silent transmission as a risk factor affecting transmission of dengue fever. | en_US |
dc.type | Conference Abstract | en_US |
dc.identifier.department | Molecular Medicine Unit | en |
dc.identifier.department | Medicine | en |
dc.identifier.department | Parasitology | en |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
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silent transmission.pdf | 9.72 kB | Adobe PDF | View/Open |
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