Epidemiology and control of intestinal schistosomiasis on the Sesse Islands, Uganda: integrating malacology and parasitology to tailor local treatment recommendations

Table 2 Prevalence of schistosomiasis comparing Kato-Katz diagnostic with CCA tests and SEA-ELISA

Site (Map ID)	DIAGNOSTIC TEST
	Kato-Katz			CCA				SEA-ELISA
	N	Infection intensity L/M/H	Prevalence (95% CIs)	N	Infection intensity tr/+/++/+++	Prevalence - trace as positive (95% CIs)	Prevalence - trace as negative (95% CIs)	N	Infection intensity tr/+/++/+++	Prevalence (95% CIs)
Butulume (45)	15	2/0/0	13.3 (1.7-40.5)	15	4/0/0/0	26.7 (7.8-55.1)	0.0 (0.0-21.8)	15	3/0/0/0	20.0 (4.3-48.1)
Jaana (33)	20	1/0/0	5.0 (0.1-24.9)	23	1/1/0/0	8.7 (1.1-28.0)	4.3 (0.1-21.9)	22	0/6/2/4	54.5 (32.2-75.6)
Kachungwa (40)	20	2/0/0	10.0 (1.2-31.7)	23	2/1/0/0	13.0 (2.8-33.6)	4.3 (0.1-21.9)	23	2/1/4/2	39.1 (19.7-61.4)
Kuuye (39)	20	3/1/0	20.0 (5.7-43.7)	20	2/2/1/0	25.0 (8.7-49.1)	15.0 (3.2-37.9)	20	1/1/3/1	30.0 (11.9-54.3)
Lwenabatwa (36)	10	1/0/0	10.0 (0.3-44.5)	23	6/2/1/0	39.1 (19.7-61.5)	13.0 (2.8-33.6)	22	2/2/3/6	59.1 (36.4-79.3)
TOTAL	85	9/1/0	11.7 (5.8-20.6)	104	15/6/2/0	22.1 (14.6-31.3)	7.8 (3.3-14.6)	102	8/10/12/13	39.2 (29.7-49.4)

'Trace' read for CCA tests considered both as positive and negative. 'N' refers to the number of children surveyed by each diagnostic; 'L' stands for 'Light' infection intensity (< 100 eggs per gram of faeces [epg]), 'M' corresponds to 'Moderate' infection intensity (≥100 < 400 epg) and 'H' refers to 'Heavy' infection intensity (≥ 400 epg). 'tr' stands for trace reaction of CCA test, and '+', '++' and '+++' stand for single, double and triple strength reactions, respectively.

ISSN: 1756-3305