. 2011 Oct 1;85(4):586–593. doi: 10.4269/ajtmh.2011.10-0668

Table 1.

EIR and HBR before and after IRS intervention, Benin^*

Location		Before intervention						After intervention
		Dry season, January–March 2008		Rainy season, April–July 2008		January–July 2008		Dry season, January–March 2009		Rainy season, April–July 2009		January–July 2009		% Reduction
		95% CI		95% CI		95% CI		95% CI		95% CI		95% CI		% Reduction
Adjohoun	Total	65		207		272		8		64		72
	Person night	48		64		112		48		64		112
	HBR	1.35	–0.04 to 2.75	3.23	–1.11 to 7.57	2.43	0.40–4.46	0.17	–0.55 to 0.88	1	–0.14 to 2.14	0.64	0.00–1.28	73.66
	S%	0		5.71		3.12		0		0		0
	EIR	0		0.18		0.07		0		0		0		100
Dangbo	Total	48		280		328		0		16		16
	Person night	48		64		112		48		64		112
	HBR	1	0.69–1.31	4.375	0.91–7.84	2.93	0.74–5.12	0	0.00–0.00	0.25	–0.22 to 0.72	0.14	–0.09 to 0.37	95.22
	S%	2.08		4.49		3.64		0		0		0
	EIR	0.02		0.19		0.10		0		0		0		100
Misserete 1	Total	38		98		136		11		0		11
	Person night	48		64		112		48		64		112
	HBR	0.79	0.29–1.29	1.53	0.45–2.61	1.21	0.63–1.80	0.23	–0.76 to 1.22	0	0.00–0.00	0.1	–0.14 to 0.34	91.73
	S%	0		0		0		0		0		0
	EIR	0		0		0		0		0		0		–
Misserete 2	Total	160		944		1,104		0		121		121
	Person night	48		64		112		48		64		112
	HBR	3.33	–1.37 to 8.04	14.75	3.68–25.82	9.86	2.54–17.18	0	0.00–0.00	1.89	–0.40 to 4.18	1.08	–0.25 to 2.41	89.04
	S%	0		1.07		0.71		0		0.84		0.84
	EIR	0		0.15		0.07		0		0.01		0.009		87.14
Seme	Total	100		1,592		1,692		29		507		536
	Person night	48		64		112		48		64		112
	HBR	2.08	–1.34 to 5.50	24.88	–2.11 to 51.86	15.11	–0.72 to 30.9.3	0.6	–0.33 to 1.54	7.92	–6.65 to 22.49	4.79	–2.21 to 11.78	68.29
	S%	1.92		3.5		3.01		0		0		0
	EIR	0.04		0.87		0.45		0		0		0		100
Akron control	Total	48		224		272		50		896		946
	Person night	48		64		112		48		64		112
	HBR	1	–1.48 to 3.48	3.5	0.38–6.62	2.43	0.57–4.29	1.04	–0.05 to 2.13	14	–21.57 to 49.57	8.45	–7.52 to 24.41	–248.14
	S%	0		4.3		2.98		8.16		6.34		6.85
	EIR	0		0.15		0.07		0.08		0.88		0.57		–7.14

EIR = entomologic inoculation rate; HBR = human biting rate; IRS = indoor residual spraying; CI = confidence interval; S% = sporozoite index; EIR is given as infected bites/person/night.