Susan Little, MD

Susan Little, MD, is a board-certified infectious disease specialist who cares for patients with all types of infections or diseases caused by viruses, bacteria, fungi and parasites.

Dr. Little is director of the Antiviral Research Center (AVRC) and clinical research site leader for the AIDS Clinical Trials Group (ACTG) site at UC San Diego. She conducts translational clinical research focused on the pathogenesis, prevention and treatment of acute and very recent HIV infection.

As a professor in the Department of Medicine, Division of Infectious Diseases and Global Public Health, she is actively involved in the training and mentoring of students, post-doctoral research fellows and junior faculty. Dr. Little's current research is focused on the use of molecular epidemiologic methods to infer and characterize HIV transmission networks and the potential of prevention and treatment interventions to reduce network incidence. She has also taken the local leadership role for several international SARS-CoV-2 vaccine safety and efficacy studies as well as prevention and treatment studies for human monkeypox virus.

Dr. Little completed fellowship training in infectious diseases at UC San Diego School of Medicine. She completed residency training in internal medicine at Washington University, Barnes Hospital in St. Louis. Dr. Little earned her medical degree from Washington University School of Medicine in St. Louis. She is board certified in internal medicine and infectious disease.

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For more information, see Infectious Disease.