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Table 2 Percentage proportions of children infected with S. mansoni before and after MDA

From: Mass drug administration significantly reduces infection of Schistosoma mansoni and hookworm in school children in the national control program in Sierra Leone

Intensity of infection Proportion (95% CI) before MDA (%) Proportion (95% CI) after MDA (%)
0 epg 29.5 (25.7-33.6) 56.8 (52.3-61.1)
Light 1-99 epg 35.0 (31.0-39.2) 25.2 (21.6-29.2)
Moderate 100-399 epg 24.1 (20.6-28.0) 7.8 (5.7-10.5)
Heavy ≥ 400 epg 11.5 (9.0-14.5) 2.1 (1.1-3.7)