Table 2.

Percentage mortality after 24 h exposure period during WHO tube assay for susceptibility to permethrin, deltamethrin, and bendiocarb in 3-5-day-old mosquitoes from larvae collected from Teso North and Teso South subcounties, Western Kenya, between 2012 and 2014.

Year	2012			2013		2014		MeanSD
Clusters	Different types of insecticides on WHO-treated test papers for tube assay
	Permethrin	Deltamethrin	Permethrin	Deltamethrin	Bendiocarb	Permethrin	Deltamethrin	Permethrin	Deltamethrin	Bendiocarb
Kaliwa	75∗101	63∗16	74∗118	93∗100	-	76∗67	79∗52	75±5.4	78±15.6	-
Odioi	37∗99	56∗34	79∗103	89∗100	100∗61	56∗101	53∗100	57±19.4	66±19.1	100
Akiriamasit	81∗89	-	78∗117	96∗107	100∗100	53∗19	76∗84	71±15.4	75±11.8	100
Kengatunyi	87∗107	66∗44	91∗102	99∗116	-	80∗92	93∗14	86±5.7	86±18.3	-
Rwatama	86∗103	70∗38	75∗116	87∗101	-	38∗8	78∗63	66±23.1	78±8.0	-
MeanSD	73±19.5	64±10.5	79±8.2	93±6.9	100	61±16.7	76±14.5	71	77	100

^∗Superscripted numbers represented the number of 3-5-day-old female mosquitoes assayed. ⁻Where 3-5-day-old female mosquitoes were not available for exposure to that particular insecticide. WHO criteria for susceptibility are as follows: mortality rates between 98% and 100% indicate full susceptibility; mortality rates between 90% and 97% require further investigation while mortality rates < 90%, the population is considered resistant to the tested insecticides.