Parasites & Vectors

Table 2 Entomological inoculation rate (EIR) of An. gambiae observed during IRS campaign and following IRS withdrawal

From: A shift from Indoor Residual Spraying (IRS) with bendiocarb to Long-Lasting Insecticidal (mosquito) Nets (LLINs) associated with changes in malaria transmission indicators in pyrethroid resistance areas in Benin

		During IRS				Following IRS withdrawal
		(Apr.-Dec. 2010)				(Apr.-Dec. 2011)
Localities	Variables	3^rdround of IRS	4^thround of IRS	Total	EIR/period	April-July	Aug.-Dec.	Total	EIR/period	IDR	Comparison EIR/period
		(Apr.-Jul.)	(Aug.-Dec.)	(Apr.-Dec.)				(Apr.-Dec.)		95% IC
Adjohoun central area	Thorax	4	4	8	0	25	16	41	5.2	∞	p<0.001
	Thorax+	0	0	0		1	0	1
	Is	0	0	0		0.04	0	0.02
	EIR	0	0	0		0.04	0	0.02
Adjohoun peripheral area	Thorax	15	10	25	7.33	39	27	66	12.83	1.75 [1.72-1.78]	p<0.001
	Thorax+	2	0	2		2	1	3
	Is	0.13	0	0.08		0.05	0.04	0.05
	EIR	0.07	0	0.03		0.07	0.03	0.05
Dangbo central area	Thorax	13	2	15	0	11	9	20	0	1	p=1
	Thorax+	0	0	0		0	0	0
	Is	0	0	0		0	0	0
	EIR	0	0	0		0	0	0
Dangbo peripheral area	Thorax	93	14	107	19.29	48	17	65	5.23	0.27 [0.27-0.28]	p<0.001
	Thorax+	3	1	4		0	1	1
	Is	0.03	0.07	0.04		0	0.06	0.02
	EIR	0.11	0.04	0.07		0	0.02	0.02
Missérété central area	Thorax	12	5	17	0	38	16	54	3.09	∞	p<0.001
	Thorax+	0	0	0		1	0	1
	Is	0	0	0		0.03	0	0.02
	EIR	0	0	0		0.02	0	0.01
Missérété peripheral area	Thorax	44	32	76	4.82	45	58	103	27.07	5.61 [5.53-5.69]	p<0.001
	Thorax+	1	0	1		4	2	6
	Is	0.02	0	0.01		0.09	0.03	0.06
	EIR	0.04	0	0.02		0.15	0.04	0.1
Sèmè central area	Thorax	80	58	138	36.27	121	9	130	25.85	0.71 [0.71-0.72]	p<0.001
	Thorax+	2	0	2		6	0	6
	Is	0.03	0	0.01		0.05	0	0.05
	EIR	0,41	0	0.13		0.2	0	0.1
Sèmè peripheral area	Thorax	73	34	107	14.73	166	43	209	7.44	0.5 [0.5-0.51]	p<0.001
	Thorax+	1	0	1		2	0	2
	Is	0.01	0	0.01		0.01	0	0.01
	EIR	0.13	0	0.05		0.06	0	0.03
Adjara central area	Thorax	44	83	127	96.01	15	2	17	8.1	0.08 [0.04-0.17]	p<0.001
	Thorax+	3	6	9		2	0	2
	Is	0.07	0.07	0.07		0.13	0	0.12
	EIR	0.45	0.25	0.36		0.06	0	0.03
Adjara peripheral area	Thorax	120	104	224	536.15	516	257	773	124.2	0.23 [0.19-0.28]	p<0.001
	Thorax+	14	9	23		23	6	29
	Is	0.12	0.09	0.1		0.04	0.02	0.04
	EIR	3.83	0.5	1.99		0.61	0.17	0.46

Thorax +: positive thorax.
Is sporozoïtique.
EIR Entomological Inoculation Rate (infected bite/man/night).
IDR Incidence Density Ratio.
IC Confidence interval.

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