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[Correspondence] Safe water, sanitation, hygiene, and a cholera vaccine

Firdausi Qadri and colleagues (July 8, p 1362)1 reported results from a trial of the oral cholera vaccine, which included an arm combining the oral cholera vaccine with an intervention promoting handwashing and drinking water treatment at home. The authors reported no significant protective effect of the behaviour change intervention over that of the vaccine alone. Despite the authors’ cautions against drawing conclusions from a study that had no independent water and hygiene intervention arm, media sources misinterpreted the results2 as “…the oral vaccine worked way better than…getting people to wash their hands and drink clean water”.

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