Guiteras Analyzes the Efficacy of Recent WASH Interventions

Assistant Professor Raymond Guiteras participated in a conference organized by the World Health Organization and the Bill & Melinda Gates Foundation in Seattle where he collaborated with his peers to create a paper reviewing recent studies on WASH (Water, Sanitation, Hygiene) efforts regarding children. It was published in BMC Medicine on August 28, 2019 ( Below is a summary of their assessment.

“Here we report the conclusions of an expert meeting convened by the World Health Organization and the Bill and Melinda Gates Foundation to discuss these findings, and present five key consensus messages as a basis for wider discussion and debate in the WASH and nutrition sectors. We judge these trials to have high internal validity, constituting good evidence that these specific interventions had no effect on childhood linear growth, and mixed effects on childhood diarrhea. These results suggest that, in settings such as these, more comprehensive or ambitious WASH interventions may be needed to achieve a major impact on child health.

These results are important because such basic interventions are often deployed in low-income rural settings with the expectation of improving child health, although this is rarely the sole justification. Our view is that these three new trials do not show that WASH in general cannot influence child linear growth, but they do demonstrate that these specific interventions had no influence in settings where stunting remains an important public health challenge. We support a call for transformative WASH, in so much as it encapsulates the guiding principle that – in any context – a comprehensive package of WASH interventions is needed that is tailored to address the local exposure landscape and enteric disease burden.”

Read the entire published paper.

Subscribe to ARE Monthly Newsletter