Victor Ssempijja is a Biostatistician and methods epidemiologist. His research explores application of statistical and epidemiological methods to innovate and enhance public health interventions and structural changes for community advancements. His PhD desertion studies acceleration of HIV epidemic control through optimizing use of anti-retroviral therapies (ART) for HIV prevention and treatment. The dissertation is framed by population-based studies that explore opportunities for enhancing effectiveness and use of ARTs to prevent new HIV cases and sustain viral suppression in persons living with HIV.

Past projects included Clinical trials for efficacy, population-based cohort and surveillance studies of; Medical male circumcision for HIV prevention. , HIV/infectious disease transmission dynamics that have contributed to describing HIV transmission patterns and identification of innovative ways of optimizing implementation of HIV combination prevention services, HIV pre-exposure prophylaxis (PrEP) eligibility and epidemic impact  in generalized HIV populations as well as the dynamic nature of   PrEP eligibility. He also performs mentorship roles in biostatistics, data management, and epidemiology to analyses being performed by scientists in training or junior investigators. He has co-authored over 40 published manuscripts and is involved in ongoing studies and analyses for at least ten more currently.