Soil-transmitted helminth reinfection after anthelmintic treatment in schools with improved versus unimproved WASH infrastructure in Mozambique: a prospective cohort study.
A prospective cohort study in Mozambique found that despite effective anthelmintic treatment, soil-transmitted helminth reinfection rates over seven months were unexpectedly higher among school-aged children attending schools with improved water, sanitation, and hygiene (WASH) infrastructure compared to those with unimproved facilities, suggesting that infrastructure-based classifications may not accurately reflect true exposure or behavioral risks.