High burden of Schistosoma mansoni infection in school-aged children in Marolambo District, Madagascar

Table 1 Characteristics and results of study by age

Study characteristic		Age (yrs)
Study characteristic		5–6	7–8	9–10	11–12	13–14
Number of participants		64	85	85	79	83
Percentage female		53.13	51.76	50.59	51.90	46.99
Schistosomiasis prevalence (%)	Kato-Katz	76.56	80.00	87.06	82.28	84.34
Schistosomiasis prevalence (%)	CCA	85.94	91.76	98.82	97.47	97.59
Sm + mean intensity (epg) with ranges		138.5 (24–744)	394 (24–3480)	528.9 (24–2616)	434.7 (24–3840)	732.3 (24–4104)
Sm + mean intensity (epg) per village	Ampasimbola	108	516	473.5	757.3	1095.3
	Ambohitelo	256	160	387.4	460.4	495
	Marofatsy	96	664	192	693	656
	Vohidamba	72	223.2	402.7	929	604.4
	Betampona	144	487	691	384	366
Sm + mean intensity (epg) per gender	Male	136	392.64	411.72	754.32	502.56
Sm + mean intensity (epg) per gender	Female	147.6	362.64	498.32	850.08	732.8

Abbreviations: CCA circulating cathodic antigen, epg eggs per gram, Kato-Katz microscopy using the Kato-Katz technique