Andrew Pollard is Professor of Paediatric Infection and Immunity at the University of Oxford. His contributions to the overlapping fields of paediatrics, Vaccinology and public Health resulted in his appointment as the Government’s chief advisor on vaccines, and he became chair of the Department of Health’s Joint Committee on Vaccination in 2013. He is also chair of the European Medicine’s Agency Scientific Advisory Group on vaccines and an advisor to WHO. Professor Pollard’s work has had a profound impact on childhood immunisation in the UK, supporting the introduction of half of the vaccines currently given to children.