Table 2. Pre-treatment S. haematobium infection prevalences in the nine EMINI study sites in Mbeya Region, Tanzania.

	S. haematobium (total population)			S. haematobium (school-aged children)
Study site	No. of participants (households)	No. of infections	Infection prevalence % (95% CI)	No. of participants	No. of infections	Infection prevalence % (95% CI)
Igurusi	1947	307	15.8	695	208	29.9
	(514)		(14.2–17.5)			(26.6–33.4)
Itaka	1924	225	11.7	809	171	21.1
	(369)		(10.3–13.2)			(18.5–24.1)
Kyela	2261	184	8.1	853	96	11.3
	(534)		(7.1–9.3)			(9.3–13.6)
Mlowo	2139	100	4.7	898	82	9.1
	(494)		(3.9–5.7)			(7.4–11.2)
Utengule	1722	62	3.6	627	36	5.7
	(454)		(2.8–4.6)			(4.2–7.9)
Iyunga	1503	19	1.3	641	10	1.6
	(336)		(0.8–2.0)			(0.8–2.9)
Ruanda	1676	15	0.9	669	6	0.9
	(406)		(0.5–1.5)			(0.4–2.0)
Isongole	2105	2	0.1	806	1	0.1
	(542)		(0.0–0.4)			(0.0–0.9)
Santylia	2003	0	0	730	0	0
	(540)
All Sites	17280	914	5.3	6728	610	9.1
	(4189)		(5.0–5.6)			(8.4–9.8)

Shown are the prevalences in the total population (left) and for school-aged children only (5 to 18 years, right). CI = confidence interval.