Dr. Karin Hatzold, M.D., MPH, is a public health physician with over 27 years of experience in researching, designing, and delivering public health interventions, including 24 years in southern Africa. Based in Cape Town, South Africa, Hatzold is the director for HIV, TB, and viral hepatitis at PSI and the project director of the Self-Testing Africa, or STAR, project. With deep experience in program design and management, policy development, and implementation research, Dr Hatzold has a proven track record in bringing new interventions from R&D through piloting to policy shift to scale across a range of health areas including HIV, TB, SRH, viral hepatitis, and Covid-19.