1. Effects, equity, and cost of school-based and community-wide treatment strategies for soil-transmitted helminths in Kenya: a cluster-randomised controlled trial
- Author
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Pullan, Rachel, Halliday, Katherine, Oswald, William, Mcharo, Carlos, Beaumont, Emma, Kepha, Stella, Witek-McManus, Stefan, Gichuki, Paul, Allen, Elizabeth, Drake, Tom, Pitt, Catherine, Matendechero, Sultani, Gwayi-Chore, Marie-Claire, Anderson, Roy, Njenga, Sammy, Brooker, Simon, Mwandawiro, Charles S, and Bill & Melinda Gates Foundation
- Subjects
Adult ,Male ,Adolescent ,Albendazole ,Hookworm Infections ,Soil ,Young Adult ,Medicine, General & Internal ,General & Internal Medicine ,Prevalence ,Animals ,Humans ,Trichuriasis ,Ascaris lumbricoides ,Child ,11 Medical and Health Sciences ,School Health Services ,Anthelmintics ,Ascariasis ,Science & Technology ,Middle Aged ,Kenya ,Intention to Treat Analysis ,Cross-Sectional Studies ,Trichuris ,INFECTIONS ,Child, Preschool ,Female ,Public Health ,Life Sciences & Biomedicine - Abstract
Background School-based deworming programmes can reduce morbidity attributable to soil-transmitted helminths in children but do not interrupt transmission in the wider community. We assessed the effects of alternative mass treatment strategies on community soil-transmitted helminth infection. Methods In this cluster-randomised controlled trial, 120 community units (clusters) serving 150 000 households in Kenya were randomly assigned (1:1:1) to receive albendazole through annual school-based treatment targeting 2–14 year olds or annual or biannual community-wide treatment targeting all ages. The primary outcome was community hookworm prevalence, assessed at 12 and 24 months through repeat cross-sectional surveys. Secondary outcomes were Ascaris lumbricoides and Trichuris trichiura prevalence, infection intensity of each soil-transmitted helminth species, and treatment coverage and costs. Analysis was by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT02397772. Findings After 24 months, prevalence of hookworm changed from 18·6% (95% CI 13·9–23·2) to 13·8% (10·5–17·0) in the annual school-based treatment group, 17·9% (13·7–22·1) to 8·0% (6·0–10·1) in the annual community-wide treatment group, and 20·6% (15·8–25·5) to 6·2% (4·9–7·5) in the biannual community-wide treatment group. Relative to annual school-based treatment, the risk ratio for annual community-wide treatment was 0·59 (95% CI 0·42–0·83; p
- Published
- 2019