Professor Tobias Chirwa heads the School of Public Health of the University of the Witwatersrand (Wits), South Africa. He is the Programme Director for the Sub-Saharan Africa Consortium for Advanced Biostatistics (SSACAB) and co-leads the Wits-University of North Carolina (UNC) partnership on expanding capacity in HIV Implementation Science in South Africa, together with the WHO/TDR Implementation Research. Prior to this, he was a Research Fellow in Medical Statistics at London School of Hygiene and Tropical Medicine (LSHTM).

He has contributed towards curriculum development and capacity building in implementation science, epidemiology and biostatistics in Malawi and South Africa, and across the SSA region. His research has revolved around STIs and HIV, maternal and newborn health. He continues to work on HIV, tuberculosis diagnosis, treatment adherence and post-treatment survival, child health and more recently malaria transmission. His statistical interest is in longitudinal and survival data analysis. He has co-authored more than 100 peer-reviewed journal articles.