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Free Content Vector control by insecticide-treated nets in the fight against visceral leishmaniasis in the Indian subcontinent, what is the evidence?

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Summary Visceral leishmaniasis (VL) is a deadly vector-borne disease that causes an estimated 500 000 new cases a year. In India, Nepal and Bangladesh, VL is caused by , which is transmitted from man to man by the sandfly . In 2005, these three countries signed a memorandum of understanding to eliminate VL from the region. Integrated vector management is one of the pillars of this elimination strategy, alongside early case detection and treatment. We reviewed the evidence of effectiveness of different vector control methods, to examine the potential role of insecticide treated bednets (ITNs). Indoor residual spraying has shown poor impact for various reasons and resistance to DDT is emerging in Bihar. Environmental management performed poorly compared to insecticide based methods. ITNs could give individual protection but this still needs to be proven in randomized trials. Given the constraints of indoor residual spraying, it is worthwhile to further explore the use of ITNs, in particular long lasting ITNs, as an additional tool in the VL elimination initiative.


Analyser les preuves sur l’efficacité des différentes méthodes de contrôle du vecteur et examiner le rôle potentiel des moustiquaires imprégnées d’insecticide (ITNs). Méthode: 

Revue de littérature. Résultats: 

la pulvérisation de résidu d’intérieur a un impact faible pour diverses raisons et la résistance au DDT est en émergence dans le Bihar. La gestion de l’environnement s’avère moins efficace que les méthodes basées sur l’insecticide. Les ITNs pourraient conférer une protection aux individus mais cela doit encore être prouvé dans des essais randomisés. Conclusions: 

Compte tenu des contraintes de la pulvérisation de résidu d’intérieur, l’utilisation des ITNs durables devrait être explorée comme un outil additionnel dans l’initiative d’élimination de la LV.
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Keywords: Bangladesh; ITNs durable; Inde; India; Leishmania donovani; Nepal; Népal; Phlebotomus argentipes; control vectorial; contrôle du vecteur; indoor residual spraying; insecticide susceptibility; insecticide-treated nets; leishmaniasis visceral; leishmaniose viscérale; mosquiteras impregnadas de larga duración; review; revisión literaria; revue de la littérature; vector control; visceral leishmaniasis

Document Type: Research Article

Affiliations: 1:  Institute of Tropical Medicine, Antwerp, Belgium 2:  London School of Hygiene and Tropical Medicine, London, UK 3:  Rajendra Memorial Research Institute of Medical Sciences, Agamkuan, Patna, India 4:  Banaras Hindu University, Varanasi, India 5:  Geneva University Hospitals, Geneva, Switzerland 6:  BP Koirala Institute of Health Sciences, Dharan, Nepal

Publication date: 2008-08-01

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