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A pilot subsidized cook stove program for sub-Saharan Africa. Darby Jack Patrick Kinney Eleanne van Vliet Mailman School of Public Health March 12, 2009. The problem. Source: Disease Control Priorities Project (dcp2.org). From Kirk Smith. Source: Kirk Smith. The project. Solutions.
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A pilot subsidized cook stove program for sub-Saharan Africa Darby Jack Patrick Kinney Eleanne van Vliet Mailman School of Public Health March 12, 2009
From Kirk Smith Source: Kirk Smith
Solutions • Switch to a cleaner fuel • Remove emissions from the home using a chimney • Switch to an improved stove (increased combustion efficiency)
Kintampo Health Research Centre QuickTimeェ and a decompressor are needed to see this picture.
EnterpriseWorks Gyapa Improved Woodstove
What we did We set out to answer two questions: • How much do stoves reduce exposure? • What factors lead people to permanently adopt stoves? What strategies might improve adoption?
Personal Monitoring (24-hr) Filter-based and real-time collection of PM2.5
Adoption: Focus groups and surveys • Ongoing activity • One round of stove distribution occurred last summer; second round will occur this summer, drawing on what we’ve learned • Generally, positive response • High percentage of households using stoves on follow-up visits • Continue to use 3-stone fires, however • Some foods are harder to cook
The big questions • How clean is clean enough? • Are there thresholds in the dose response relationship? • What interventions will get you there? • How much do stoves reduce exposure (by stove type, mode of diffusion, etc) • Does it matter when in the lifecycle exposure occurs?
Large-scale randomized trialJoint with Pat Kinney (air pollution epidemiologist), Robin Whyatt (toxicologist), and Seth Owusu (epidemiologist) • Hypothesis 1: maternal exposure during pregnancy is associated with low birth weight • Hypothesis 2: maternal exposure during pregnancy is associated with increased risk of Acute Lower Respiratory Infection (ALRI) Status: currently preparing revised proposal for NIH grant; first round was well-received, but ultimately unsuccessful.