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Fig. 2 | Parasites & Vectors

Fig. 2

From: Impregnating hessian strips with the volatile pyrethroid transfluthrin prevents outdoor exposure to vectors of malaria and lymphatic filariasis in urban Dar es Salaam, Tanzania

Fig. 2

Absolute total numbers of mosquitoes caught and mean numbers caught per person night of catching for each experimental round of replication, as well as derived estimates for the protective efficacy of transfluthrin-treated hessian strips against bites. Left hand panels compare the absolute total and mean numbers of mosquitoes caught by human landing catch in both the treated and control group. Each data point represents one complete round of eight night of sampling with 16 person nights of capture for each of the control and treatment groups. Right hand panels present the calculated protective efficacy, which is defined in term of proportional reduction (ρ) in the number of mosquitoes caught in the test group with transfluthrin-treated strips (N t ) relative to the negative control group with untreated negative control strips (N c ), obtained by dividing the difference between the numbers of mosquitoes caught with treated and untreated strips by the number caught with the control strips (ρ = (N c –N t )/ N c ). The trend lines represent the most parsimonious fitted generalized linear mixed models, which includes only strip treatment as a fixed effect in the case of Anopheles gambiae but also Poisson-linear decay of treatment effect over time in the case of Culex spp

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Parasites & Vectors

ISSN: 1756-3305

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