by Tobias Homan, Alexandra Hiscox, Collins K Mweresa et al.
The Lancet, Vol. 388, No. 10050, pp. 1193–1201, 17 September 2016
Odour baits can attract host-seeking Anopheles mosquitoes indoors and outdoors. The authors assessed the effects of mass deployment of odour-baited traps on malaria transmission and disease burden. They installed solar-powered odour-baited mosquito trapping systems (SMoTS) to households on Rusinga Island, Lake Victoria, western Kenya (mean population 24 879), in a stepped-wedge cluster-randomised trial. They conclude that the unexpectedly low clinical incidence of malaria during roll-out led to an imprecise estimate of effectiveness from the clinical incidence data. The substantial effect on malaria prevalence is explained by reduction in densities of Anopheles funestus. Odour-baited traps might be an effective malaria intervention.