Overview
I am an Adjunct Professor of Medicine, Pathology, and Global Health. My work with Duke University is primarily based in northern Tanzania where I am former Site Leader and current Principal Investigator on projects linked to Duke University’s collaborative research program at Kilimanjaro Christian Medical Centre. I oversee the design and implementation of research studies on infectious diseases, particularly febrile illness, invasive bacterial disease, zoonotic infections, and infectious diseases diagnostics. In addition, I am Professor of Medicine, Pathology, and Global Health at the University of Otago and a medical epidemiologist with the US Centers for Disease Control and Prevention (CDC). My CDC work focuses on non-malaria febrile illness.
Current Appointments & Affiliations
Adjunct Professor in the Department of Medicine
·
2011 - Present
Medicine, Infectious Diseases,
Medicine
Adjunct Professor in the Department of Pathology
·
2011 - Present
Pathology,
Clinical Science Departments
Adjunct Professor of Global Health
·
2015 - Present
Duke Global Health Institute,
University Institutes and Centers
Recent Publications
Complications and mortality of typhoid fever: an updated global systematic review and meta-analysis.
Journal Article Lancet Infect Dis · March 2026 BACKGROUND: Updated estimates of the prevalence of complications and case-fatality ratio (CFR) among patients with typhoid fever are needed to inform typhoid fever prevention and control. To support country-level decisions on typhoid prevention and control ... Full text Link to item CiteLeptospirosis Incidence at Four Sites in Sub-Saharan Africa and South East Asia: An International Multi-Site Hybrid Surveillance Study.
Journal Article Open Forum Infect Dis · March 2026 BACKGROUND: There are few leptospirosis incidence studies despite such estimates being central to accurate burden of disease estimation. We used data from the multicenter Febrile Illness Evaluation in a Broad Range of Endemicities (FIEBRE) study to make le ... Full text Link to item CitePopulation Structure of Escherichia coli Isolated From the Human Bloodstream, Human and Animal Feces, and the Environment in Northern Tanzania.
Journal Article J Infect Dis · January 17, 2026 BACKGROUND: Extraintestinal pathogenic Escherichia coli (ExPEC) are a leading cause of human bloodstream infections (BSIs) in sub-Saharan Africa, yet few studies have characterized African strains implicated in BSI or explored their potential reservoirs. M ... Full text Link to item CiteRecent Grants
Viral Zoonoses and Severe Febrile Illness in Northern Tanzania (K23)
ResearchMentor · Awarded by National Institutes of Health · 2016 - 2021Investigating Febrile Deaths in Tanzania (INDITe)
ResearchPrincipal Investigator · Awarded by National Institutes of Health · 2016 - 2021One Health Innovation Fellowships for Zoonotic Disease Research in Mongolia
Inst. Training Prgm or CMEMentor · Awarded by National Institutes of Health · 2013 - 2019View All Grants
Education
University of Otago (New Zealand) ·
1993
M.B.B.Ch.