Dame Sarah Gilbert is a British vaccinologist known for her significant contributions to vaccine development. She is a professor at the University of Oxford and played a key role in creating the Oxford-AstraZeneca COVID-19 vaccine, which has been widely used to combat the COVID-19 pandemic. In recognition of her work, she was appointed a Dame Commander of the Order of the British Empire (DBE) in 2021. Gilbert's research focuses on developing vaccines for various infectious diseases, and she has been involved in numerous projects aimed at improving global health through vaccination.