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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060 EISSN: 1678-8060
Vol. 104, No. 8, 2009, pp. 1183-1186
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Bioline Code: oc09236
Full paper language: English
Document type: Research Article
Document available free of charge
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Memórias do Instituto Oswaldo Cruz, Vol. 104, No. 8, 2009, pp. 1183-1186
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Effect of untreated bed nets on blood-fed Phlebotomus argentipes in kala-azar endemic foci in Nepal and India
Picado, Albert; Kumar, Vijay; Das, Murari; Burniston, Ian; Roy, Lalita; Suman, Rijal; Dinesh, Diwakar; Coosemans, Marc; Sundar, Shyam; Shreekant, Kesari; Boelaert, Marleen; Davies, Clive & Cameron, Mary
Abstract
Observational studies in the Indian subcontinent have shown that untreated nets may be protective against visceral
leishmaniasis (VL). In this study, we evaluated the effect of untreated nets on the blood feeding rates of Phlebotomus
argentipes as well as the human blood index (HBI) in VL endemic villages in India and Nepal. The study
had a "before and after intervention" design in 58 households in six clusters. The use of untreated nets reduced the
blood feeding rate by 85% (95% CI 76.5-91.1%) and the HBI by 42.2% (95% CI 11.1-62.5%). These results provide
circumstantial evidence that untreated nets may provide some degree of personal protection against sand fly bites.
Keywords
untreated nets - Phlebotomus argentipes - visceral leishmaniasis - HBI
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