Figure 2From: Patterns of soil-transmitted helminth infection and impact of four-monthly albendazole treatments in preschool children from semi-urban communities in Nigeria: a double-blind placebo-controlled randomised trial (A) Prevalence rates ± C.I. ( A. lumbricoides ) and mean epg in treatment and placebo groups during the follow-up period. (B) Mean epg ± S.E. Treatment group N = 194, Placebo group N = 194.Back to article page