Professor Helen Rees is the Founder and Executive Director of Wits RHI, the largest research Institute at Wits University. She is internationally recognised as an award-winning global health practitioner who has dedicated her professional career to improving public health in Africa, with a focus on vaccine preventable diseases, HIV and sexual and reproductive health. Professor Rees chairs the Board of the South African Health Products Regulatory Authority and also Chairs the World Health Organisation’s AFRO Region Immunization Technical Advisory Group. She is a member of the South African Ministerial Advisory Committee on COVID-19 and a member of the South African Ministerial Advisory Committee on COVID-19 vaccines. Professor Rees is a member of the COVAX committee on COVID-19 maternal immunization and a member of the WHO IHR Emergency Committee on COVID-19, member of the WHO Expert Committee on COVID-19 vaccines, and a member of WHO’s Scientific and Technical Advisory Group on Infectious Hazards.