Prof Theresa Rossouw is a professor in the Department of Immunology at the University of Pretoria (UP). She is a clinician scientist and has a double PhD, one in Immunology and one in Philosophy. She is an NRF-rated scientist and mainly works in the field of HIV and related infections where she is specifically interested in HIV-associated drug resistance and systemic immune activation. She is a member of the World Health Organization’s Research and Innovation Working Group, HIVResNet, as well as various scientific committees, including the Southern African HIV Clinician Society. She chairs the Research Ethics Committee (REC) of the Human Sciences Research Council and is a deputy-chairperson of the Faculty of Health Sciences REC at UP. She is currently involved in studies assessing outcomes of HIV exposed uninfected children as well as investigating differences in the clinical and immunological profiles of HIV-infected and -uninfected patients hospitalised with COVID-19.