BMJ Publishing Group, BMJ, dec29 1(341), p. c6760-c6760, 2010
DOI: 10.1136/bmj.c6760
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Objective: To test the effectiveness of large scale distribution of longlasting nets treated with insecticide in reducing the incidence of visceral leishmaniasis in India and Nepal. Design: Paired cluster randomised controlled trial designed to detect a 50% reduction in incidence of Leishmania donovani infection. Setting: Villages in Muzaffarpur district in India and Saptari, Sunsari, and Morang districts in Nepal. Participants: 13 intervention and 13 control clusters. 12 691 people were included in the analysis of the main outcome (infection), and 19 810 were enrolled for the secondary (disease) end point. Intervention: Longlasting insecticidal nets (treated with deltamethrin) were distributed in the intervention clusters in December 2006. Main outcome measures: Infection was determined by direct agglutination test at 12 and 24 months after the intervention in those who had negative results (titre