Gayani Tillekeratne, MD MSc is an Associate Professor in the Division of Infectious Diseases and at the Duke Global Health Institute. Her work focuses on improving the diagnosis and management of acute febrile and acute respiratory tract infections globally, with the goal of improving antimicrobial use for these infections. 

Her activities include 1) epidemiological studies that describe the etiology and seasonality of infections such as influenza, SARS-CoV-2, dengue, and leptospirosis, 2) translational studies to develop novel host response-based diagnostics (transcriptomics based) that differentiate bacterial versus viral infections, 3) clinical trials on the implementation of diagnostics and vaccines for infectious diseases, and 4) the assessment of feasibility, acceptability, and cost-effectiveness of interventions in low-resource settings.

She is co-director of the Ruhuna-Duke Centre for Infectious Diseases in Sri Lanka and collaborates with colleagues in Southeast Asia, East Africa, and the US. She is co-leader for the Bass Connections program 'Antimicrobial Resistance in a Changing Climate: One Health Policy Framework.'