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Table 2 Overview of monthly cone bioassay in sprayed houses to determine residual efficacy

From: Malaria vector species composition and entomological indices following indoor residual spraying in regions bordering Lake Victoria, Tanzania

Year No. of districts No. of wall types tested (a) No. of houses tested p/month (b) Cone replicates p/month (c) No. of An. gambiae Kisumu tested p/month
2015 7 5 70 210 2100
2016 8 5 80 160 1600
2017 10 5 100 200 2000
  1. (a) Five surface types of wall tested were mud, cement, painted, white wash and burnt brick. (b) There were at least 2 houses per surface type. (c) In 2015, 3 cones were placed on treated wall surfaces (1.5 m 1 m, 0.5 m); while in 2016 and 2017 only 2 cones were placed at 2 m and 1 m height from the floor, respectively