Research

My research examines whether health systems provide care to those who need it and how effectively they withstand periods of macroeconomic shocks and microeconomic stressors. I distinguish between potential access, the services people could, in principle, reach, and realized access, the services they actually use. I also model the factors that contribute to the gap between the two, including the impacts of climate change, infectious diseases, and health system capacity.

Current work

Health System Resilience in Western Province, Zambia (University of Waterloo, 2025–present). Using routine health information system data, I examine how seasonal flooding and other health system stressors affect the utilization of essential health care services, including maternal and child health services, infectious disease care, and general outpatient services.

The Economics of HIV Care in the HPTN 071 (PopART) Trial (Imperial College London, 2026–present). In collaboration with colleagues at Imperial College London, I model equity, economies of scale, and health care utilization costs in a cluster-randomized trial conducted in Zambia and South Africa.

Methods

My expertise includes frequentist and Bayesian modelling; econometrics, including interrupted time-series and difference-in-differences analyses; time-series forecasting; structural equation modelling; and geospatial analysis, including catchment-area and location-allocation methods. I primarily use R in my workflow.

Publications

Several manuscripts addressing climate shocks, malaria surveillance, maternal health care, and the economics of HIV care are currently under review or in preparation. A list of my publications is available on my Google Scholar profile.