Avi is an Assistant Professor in the Department of Biostatistics and Bioinformatics at Duke University, with a secondary appointment at the Duke Global Health Institute. He holds a PhD in biostatistics from the University of Washington, where he developed statistical methods for immune correlates analysis of vaccine clinical trial data. Prior to this, he worked for five years in Liberia as the Director of Research, Monitoring, and Evaluation at Last Mile Health. His current research interests include statistical methods to handle treatment effect heterogeneity in cluster randomized trials, survival analysis using machine learning tools, evaluation of global health programs, and data quality assurance in low-resource settings.