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Fig. 2 | Infectious Diseases of Poverty

Fig. 2

From: Sustained preventive chemotherapy for soil-transmitted helminthiases leads to reduction in prevalence and anthelminthic tablets required

Fig. 2

Prevalence of STH (first row), Ascaris lumbricoides (second row), hookworm (third row) and Trichuris trichiura (fourth row) infections in countries before (left column) and after (right column) ≥ 5 years of preventive chemotherapy with effective coverage. Each dot represents a published study or WHO EPIRF data. The size of the dot indicates the number of people assessed. The red square indicates pooled and weighted mean prevalence with 95% confidence intervals. WHO: World Health Organization; EPIRF: Epidemiological data reporting form

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