Table 2. The prevalences of S. haematobium and S. mansoni infection of primary school children at the baseline survey.

Units*	No. of schools	Urine for S. haematobium examination		Stool for S. mansoni examination
		No. of samples	No. of positive (%)	No. of samples	No. of positive (%)
Al Jabalain	9	1,617	347 (21.5)	1,449	3 (0.2)
Assalaya	10	1,526	215 (14.1)	1,218	60 (4.9)
Jazeera Aba	7	914	66 (7.2)	711	1 (0.1)
Joda	3	443	178 (40.2)	321	0 (0)
Kenana	12	2,307	430 (18.6)	1,940	0 (0)
Rabak	20	3,864	237 (6.1)	3,468	28 (0.8)
Total	61	10,671	1,473 (13.8)	9,107	92 (1.0)

*Rabak unit is urban community, whereas the other 5 units are rural communities.