Principal Investigator

C. Jessica Metcalf

PicFromPAWAssistant Professor of Ecology, Evolutionary Biology & Public Affairs

Jessica Metcalf is a demographer with broad interests in evolutionary ecology, infectious disease dynamics and public policy. She completed her PhD at Imperial College on the evolutionary demography of monocarpic perennials. Her post-doctoral research was conducted at various institutions. She studied the evolution of senescence at the Max Planck Institute of Demographic Research, the inference of tree demographic parameters at Duke University, and infectious disease dynamics at Pennsylvania State University and Princeton University.

Curriculum Vitae

Post-doctoral Researchers

Amy Winter


Postdoctoral fellow

Amy holds a B.A. in international relations and history from the University of Georgia and a M.P.H in global health from the Rollins School of Public Health at Emory University. Her research interests lie at the intersection of environment, human demography, infectious disease epidemiology, and health policy. Specifically, her dissertation explores rubella and measles disease dynamics, the effects of vaccine control programs, and potential novel data sources for informing key knowledge gaps. As a postdoc in the Metcalf lab she is examining the influence that the environment (e.g., climate change) may have on population dynamics and behavior (e.g., migration patterns), and in turn how changes in population dynamics and behavior influence infectious disease dynamics.

Brooke Bozick

Postdoctoral associate

Brooke is a disease ecologist that is broadly interested in the evolution and spatial spread of pathogens. Her work aims to connect the evolutionary dynamics of infectious disease with the ecological processes that generate them through the characterization of underlying spatial genetic patterns. Her dissertation work used influenza A as a model system to examine how human mobility affects pathogen population structure and epidemic dynamics. As a postdoc in the Metcalf lab, she is investigating the global and regional spread of rubella virus to identify sources and sinks of disease transmission. Brooke received her B.S. in biology from Pennsylvania State University (2007) and her Ph.D. from Emory University (2016).

Graduate Students

Saki Takahashi


Graduate fellow

Saki is broadly interested in clarifying the spatial distribution as well as the ecological and evolutionary dynamics of viral infections and their control measures across epidemiological scales. She draws from relevant public health issues including spatial heterogeneity in susceptibility to vaccine-preventable diseases such as measles, and the emerging threat of antigenically diverse enteroviruses in the Asia-Pacific region and beyond. Saki received her AB in Applied Mathematics from Harvard (2011) and ScM in Epidemiology from Johns Hopkins (2013).

Malavika Rajeev

P1015183Graduate fellow

Malavika received a dual BS/MS in Ecology at the University of Georgia in 2013. Her MS thesis focused on examining patterns of seroprevalence of zoonotic diseases in livestock across two ranching systems in Laikipia, Kenya. She is interested in studying the ecology of disease interventions with a focus on determining optimal strategies to control canine rabies in endemic settings.

Nkengafak Villyen Motaze

Research Associate

Villyen is a medical epidemiologist who works on infectious diseases, child health, and reproductive health. Following training as a medical doctor at the University of Yaoundé 1 in Cameroon, he worked for four years in the North West Region of Cameroon as a general practitioner before deciding to pursue a career in medical research. Villyen is currently pursuing a PhD at Stellenbosch University in epidemiology within the Department of Global Health and collaborates closely with the Metcalf lab.

Ayesha Mahmud

AyeshaGraduate fellow in the Office of Population Research

Ayesha is broadly interested in using historical datasets and demographic and epidemiological models to understand the interplay between human demography and infectious disease dynamics. Her dissertation examines the causes and consequences of seasonality in the transmission and incidence of common childhood infectious diseases in a variety of contexts. Ayesha received a B.A. in physics and economics from Carleton College in Minnesota.

Research Associates

Keitly Mensah

img_4055Research Associate

Keitly is a public health physician trained in France with a strong interest in infectious disease. She oriented her training in that direction during various rotations at the WHO, infectious disease control units and research units focused on infectious disease. One of her interests is the impact of healthcare services organization on infectious disease prevention and more specifically on vaccination, particularly in low and middle income countries. Her current research focuses on the impact of seasonality on measles vaccination in Madagascar.

Lab Alumni

Joaquín Prada

Joaquín is a former postdoctoral fellow in the Metcalf lab and now holds a position at the University of Warwick.  He is a mathematical modeller interested in host-parasite interactions and modelling dynamic systems. Most recently his focus has been on improving measles control strategies and progress towards its elimination using predictive epidemiological models, as well as using serological data to improve measles incidence inference.

Benjamin Dalziel

Ben is a former Postdoctoral Fellow in the Metcalf lab and is currently an assistant professor in the Department of Integrative Biology at Oregon State University.