Presence of susceptible wild strains of Anopheles gambiae in a large industrial palm farm located in Aboisso, South-Eastern of Côte d’Ivoire

Table 2 Knockdown time (KdT) for 50 and 95% of tested An. gambiae Kisumu and An. gambiae s.l. Ehania-V1 to pyrethroids and DDT

Insecticide	Mosquito	N	Knockdown time				KdT₅₀ ratio
Insecticide	Mosquito	N	kdT₅₀ (mn)	CI 95%	kdT₉₅ (mn)	CI 95%	RR₅₀	CI 95%
Permethrin	Kisumu	104	18.1	16.2–20.3	29.3	24.9–40.4	ND	ND
Permethrin	Ehania-V1	101	ND	ND	ND	ND	ND	ND
Deltamethrin	Kisumu	107	12.6	9.2–15.8	27	20.7–48.3	4.55	1.0–12.0
Deltamethrin	Ehania-V1	124	57.3	53.7–62.2	122.6	104–155	4.55	1.0–12.0
Alphacypermethrin	Kisumu	106	15.2	11.2–19.1	34.5	26.1–60.9	5.52	2.5–14.1
Alphacypermethrin	Ehania-V1	105	83.9	72.7–135.9	144.7	104.6–353.1	5.52	2.5–14.1
DDT	Kisumu	102	48.6	45.9–51.8	99.1	86.7–119.4	ND	ND
DDT	Ehania-V1	108	ND	ND	ND	ND	ND	ND

N sample size, kdT ₅₀ knockdown time for 50% mosquitoes, kdT ₉₅ knockdown time for 95% mosquitoes, CI 95% 95% confidence interval a, min minutes, RR ₅₀ resistance ratio (kdT₅₀ of the tested population/kdT₅₀ of the Kisumu strain), R resistant, ND not determined

ISSN: 1475-2875