Marlene is a Postdoctoral Researcher with the Program on Water, Health and Development and Stanford Woods Institute for the Environment. Her research uses environmental engineering, microbiology, and epidemiology to address complex issues in WASH and child health. She has 10 years of experience working on WASH topics in low and middle income countries and emergencies, especially in East Africa. During her PhD, she focused on the development of new approaches to assess exposure to emerging infectious challenges and interventions to interrupt transmission with a focus on handwashing. At Stanford, Marlene focuses on the relationship between WASH infrastructure in communities and institutions and disease risk in the local environment. Marlene did her doctoral training in Environmental Health at Tufts University, and holds an MSc in Epidemiology from the the London School of Hygiene and Tropical Medicine and a BA in Human Biology from Stanford University.