Professor Charles Shey Wiysonge, MD, PhD, is the Regional Adviser for Immunisation and Head of the Vaccine-Preventable Diseases Programme at the World Health Organisation Regional Office for Africa. In addition, he is a member of multiple advisory committees in the fields of pandemic preparedness and response, research, vaccination, and evidence-based policy in Africa and globally. Professor Wiysonge’s previous positions include serving as Senior Director at the South African Medical Research Council; Director of the South African Cochrane Centre; Professor of Global Health and Deputy Director of the Centre for Evidence-based Health Care at Stellenbosch University, South Africa; Honorary Professor of Epidemiology and Biostatistics at the University of Cape Town in South Africa; Manager of the Vaccines for Africa Initiative and Chief Research Officer at the University of Cape Town; Chief Research Officer at UNAIDS, Geneva; and Deputy Director of the Expanded Programme on Immunisation in Cameroon.