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Table 1 Summary results of mosquitoes hut frequenting habit and exit rates in huts.

From: Control of pyrethroid and DDT-resistant Anopheles gambiae by application of indoor residual spraying or mosquito nets treated with a long-lasting organophosphate insecticide, chlorpyrifos-methyl

  Total entered Average per night Actual number fed (%) personnel protection % exiting (CI)
ITNs      
Anopheles gambiae s.s.      
Untreated net 689a 17.2 572 - 25.0a (21.7-28.2)
LC 386b 9.7 317 44.6 29.0a (24.5-33.5)
CM 648a 16.2 518 9.4 34.2a (31.5-39.2)
Culex quinquefasciatus      
Untreated net 845a 21.1 531 - 29.8a (26.7-32.9)
LC 598b 14.9 355 33.1 35.9a (32.1-39.8)
CM 839a 21.0 487 8.3 34.0a (30.6-37.1)
IRS      
Anopheles. gambiae s.s.      
Unsprayed hut 203a 5.1 178 - 45.8a (39.8-52.7)
LC 117a 2.9 86 51.7 58.1b (49.2-67.1)
CM 420b 10.5 336 0 50.5a (43.4-58.5)
DDT 268a 6.7 201 0 41.3a (36.0-47.7)
Culex quinquefasciatus      
Unsprayed hut 858a 21.4 730 - 52.7a (49.3-56.0)
LC 769a 19.2 330 54.8 54.6a (51.1-58.1)
CM 817a 20.4 621 14.9 51.0a (47.6-55.2)
DDT 764a 19.1 535 26.7 49.7a (44.1-55.0)
  1. Summary results of the impact of insecticide treated nets (ITNs) and indoor residual spray (IRS) treatments on hut frequenting habit, individual exposure to bites and exit rates of An. gambiae and Cx. quinquefasciatus to the verandahs of the huts in Ladji. For each intervention arm (ITN and IRS) and mosquito species, values in columns sharing the same letter superscript do not differ significantly. LC = Lambdacyhalothrin; CM = Chlorpyrifos methyl; DDT = Dichlorodiphenyltrichloroethane