Deworm the World - baseline prevalence rates
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These are the two main studies we rely on for evidence of deworming MDA impacts on life outcomes
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Worm (intensity)Croke (pre-MDA)Miguel and Kremer (pre-MDA)Kenya - national (pre-MDA)Vietnam - four provinces (post-MDA)Nigeria - Cross River (pre-MDA)Bihar (pre-MDA, although after an LF MDA)Rajasthan (post-MDA)Madhya Pradesh (post-MDA)Uttar Pradesh (post-MDA)Chattisgarh (post-MDA)
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Schistosome prevalence (moderate/high)Not reported7%Not reportedNot reportedIntensity data is not available0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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S. mansoniNot reportedNot reportedNot reportedNot reportedIntensity data is not available0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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S. haemotobiumNot reportedNot reportedNot reportedNot reportedIntensity data is not available0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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STH prevalence (moderate/high)Not reportedNot reportedNot reported0%Intensity data is not availableNot reportedNot measuredNot reportedNot reportedNot reported
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Hookworm prevalence (moderate/high)Not reported15%0.4%0%Intensity data is not availableNot reportedNot measured0.00015%Not reported0.90%
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Ascaris prevalence (moderate/high)Not reported16%7.9%0.72%Intensity data is not availableNot reportedNot measured0.0005%Not reported1.50%
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Trichuris prevalence (moderate/high)Not reported10%0.1%0.24%Intensity data is not availableNot reportedNot measured0%Not reported0%
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Schistosome prevalence (any)Not reported22%Not reportedNot reported37% (median)0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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S. mansoni0.03%Not reported1.8%Not reportedNot reported0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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S. haemotobiumNot reportedNot reported18.0%Not reportedNot reported0% (assumed)0% (assumed)0% (assumed)0% (assumed)0% (assumed)
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STH prevalence (any)57.5%Not reported33.4%14.54%33% (median)67.5%21.1%12.2%75.6%74.60%
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Hookworm prevalence (any)55.1%77%16.9%2.04%Not reported42.2%1.0%12%22.7%10.50%
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Ascaris prevalence (any)3.5%42%19.2%2.16%Not reported52.1%20.2%0.2%69.6%70.40%
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Trichuris prevalence (any)1.4%55%5.4%12.26%Not reported5.2%0.2%0.0%4.6%0.05%
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Data
Notes
Sources and source notes