Did microbial larviciding contribute to a reduction in malaria cases in eastern Botswana in 2012–2013?
Objective: To evaluate the susceptibility of local
Design: This field test of the efficacy of
Results: Larviciding reduced larval density by 95% in Bobirwa in 2012, with two cases of malaria, while in 2013 larval density reduction was 81%, with 11 cases. Adult mosquito density was zero for both years in Robelela village (Bobirwa), compared to respectively four and 26 adult mosquitoes per room in Shorobe village (Ngami) in 2012 and 2013. There were no cases of malaria in Robelela in either year, but in Shorobe there were 20 and 70 cases, respectively, in 2012 and 2013.
Conclusion: Larviciding can reduce the larval density of mosquitoes and reduce malaria transmission in Botswana. Large-scale, targeted implementation of larviciding in districts at high risk for malaria is recommended.
Document Type: Research Article
Affiliations: 1: Botswana University of Agriculture and Natural Resources, Gaborone, Botswana 2: National Malaria Programme, Botswana Ministry of Health, Gaborone, Botswana 3: World Health Organization (WHO) Country Office for Botswana, Gaborone, Botswana 4: Médecins Sans Frontières, Brussels, Belgium 5: Inter-Country Support Team, WHO, Harare, Zimbabwe 6: International Union Against Tuberculosis and Lung Disease, Paris, France 7: Academic Model Providing Access to Healthcare (AMPATH), Eldoret, Kenya
Publication date: April 25, 2018
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