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Entomological surveillance with viral tracking demonstrates a migrated viral strain caused dengue epidemic in July, 2017 in Sri Lanka.

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dc.contributor.author Withanage, G. P.
dc.contributor.author Hapuarachchi, H. C.
dc.contributor.author Viswakula, S. D.
dc.contributor.author Gunawardena, Y. I. N. S.
dc.contributor.author Hapugoda, M.
dc.date.accessioned 2020-05-19T14:11:26Z
dc.date.available 2020-05-19T14:11:26Z
dc.date.issued 2020
dc.identifier.citation PLoS One. 2020; 15(5):e0231408 en_US
dc.identifier.issn 1932-6203 (Electronic)
dc.identifier.issn 1932-6203 (Linking)
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/21084
dc.description Indexed in MEDLINE. en_US
dc.description.abstract BACKGROUND: Dengue is the most important mosquito-borne viral infection disease in Sri Lanka triggering extensive economic and social burden in the country. Even after numerous source reduction programmes, more than 30,000 incidences are reporting in the country every year. The last and greatest dengue epidemic in the country was reported in July, 2017 with more than 300 dengue related deaths and the highest number of dengue incidences were reported from the District of Gampaha. There is no Dengue Virus (DENV) detection system in field specimens in the district yet and therefore the aim of the study is development of entomological surveillance approach through vector survey programmes together with molecular and phylogenetic methods to identify detection of DENV serotypes circulation in order to minimize adverse effects of imminent dengue outbreaks. Entomological surveys were conducted in five study areas in the district for 36 months and altogether, 10,616 potential breeding places were investigated and 423 were positive for immature stages of dengue vector mosquitoes. During adult collections, 2,718 dengue vector mosquitoes were collected and 4.6% (n = 124) were Aedes aegypti. While entomological indices demonstrate various correlations with meteorological variables and reported dengue incidences, the mosquito pools collected during the epidemic in 2017 were positive for DENV. The results of the phylogenetic analysis illustrated that Envelope (E) gene sequences derived from the isolated DENV belongs to the Clade Ib of Cosmopolitan genotype of the DENV serotype 2 which has been the dominant stain in South-East Asian evidencing that a recent migration of DENV strain to Sri Lanka. en_US
dc.language.iso en_US en_US
dc.publisher Public Library of Science en_US
dc.subject Dengue Epidemic en_US
dc.title Entomological surveillance with viral tracking demonstrates a migrated viral strain caused dengue epidemic in July, 2017 in Sri Lanka. en_US
dc.type Article en_US


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