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 |