Sarah Nabia is a Research Faculty member in the Global Disease Epidemiology and Control (GDEC) program within the Department of International Health at the Johns Hopkins Bloomberg School of Public Health, and is based at the International Vaccine Access Center (IVAC). She holds an MPH and MBA from Johns Hopkins University and brings training in economics and policy-informed public health practice. Her work focuses on implementation science and health systems research to improve uptake of childhood and maternal vaccines across low- and middle-income countries, including multi-country mixed-methods studies examining delivery barriers and frontline health worker performance. She has also contributed to evidence synthesis on vaccine service delivery and integration. At PUBHealth, she mentors programmes on rigorous evaluation design, implementation research, and evidence generation that strengthen real-world adoption pathways, especially for interventions intended for scale in resource-constrained settings.

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