Document Detail


Evaluation of deltamethrin-impregnated bednets and curtains against phlebotomine sandflies in Valle del Cauca, Colombia.
MedLine Citation:
PMID:  7548945     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effectiveness of bednets and curtains (nylon mesh 64 per cm2) impregnated with deltamethrin at 26 mg a.i./m2 in reducing the biting nuisance caused by three phlebotomine sandfly species: Lutzomyia columbiana, Lu.lichyi and the predominant Lu.youngi (Diptera: Psychodidae), was evaluated at La Guaira, a rural settlement in Valle de Cauca near Cali, Colombia. Pairs of volunteers collected sandflies under impregnated bednets, in rooms protected by impregnated curtains or in unprotected rooms in a randomized matched design. Collections were made in three houses per night on three consecutive nights, so that each house was sampled under each of the three treatments. This routine was repeated at 2-week intervals for 6 months. There was no significant difference between the overall numbers of sandflies collected in rooms with or without impregnated curtains. Only 0.14 sandflies/man-hour were caught on human bait under impregnated bednets, significantly fewer than the numbers collected on human bait outside the nets in the same room (1.91) or in unprotected rooms (3.29). In a second set of experiments carried out in La Guaira and the neighbouring community of Jiguales, the effect of deltamethrin impregnation was evaluated by comparing numbers of sandflies collected on human bait under treated and untreated nets. Significantly fewer were collected under the impregnated nets (0.25 v. 0.69/man-hour). Wild-caught female Lu.youngi exposed to treated netting for 2 min in the laboratory all died with 24 h. The impact of deltamethrin-impregnated bednets was considered to be useful against Lu.youngi and other potential vectors of leishmaniasis in such communities.
Authors:
B Alexander; M C Usma; H Cadena; B L Quesada; Y Solarte; W Roa; B L Travi
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Medical and veterinary entomology     Volume:  9     ISSN:  0269-283X     ISO Abbreviation:  Med. Vet. Entomol.     Publication Date:  1995 Jul 
Date Detail:
Created Date:  1995-11-14     Completed Date:  1995-11-14     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8708682     Medline TA:  Med Vet Entomol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  279-83     Citation Subset:  IM    
Affiliation:
Fundación Centro Internacional de Entrenamiento e Investigaciones Médicas, Cali, Colombia.
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MeSH Terms
Descriptor/Qualifier:
Animals
Bedding and Linens*
Colombia
Evaluation Studies as Topic
Female
Humans
Insect Control / methods*
Nitriles
Psychodidae* / classification
Pyrethrins*
Grant Support
ID/Acronym/Agency:
1P50 AI30603-01/AI/NIAID NIH HHS
Chemical
Reg. No./Substance:
0/Nitriles; 0/Pyrethrins; 52820-00-5/decamethrin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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