My research focuses on infection and nutrition across the life course, with a goal of generating, analyzing, and translating epidemiological data to improve maternal, newborn, and child health in low- and middle-income countries. I have worked on the design, implementation, and analysis of randomized trials, surveillance, and health service program evaluations in Tanzania, Ghana, Bolivia, Peru, Rwanda, Uganda, Afghanistan, and the U.S. to evaluate the efficacy and effectiveness of health interventions. I have worked closely with WHO to synthesize and translate evidence for use in global policy contexts on topics including: risk of SARS-CoV-2 in pregnancy; mother-to-child transmission of SARS-CoV-2; efficacy and safety of neonatal vitamin A supplementation, and interventions for care and feeding of low birthweight infants. As an epidemiologist, my technical expertise includes study design and data analysis for randomized trials, surveillance, and conducting meta-analyses.