Anna is Principal Officer, Maternal Immunization Product Development and Surveillance at the Bill & Melinda Gates Foundation. She is an Honorary Professor of Public Health at the University of Warwick and the London School of Hygiene & Tropical Medicine. Anna is clinically qualified and specialized in pediatrics prior to public health. She has worked extensively on the epidemiology of perinatal infection, particularly Group B Streptococcus. She has set-up surveillance platforms in East Africa, and studied outbreaks, leading an analytical team in the Department of Health, UK, at the height of COVID-19. She currently leads the Maternal Immunization and Group B Streptococcus Vaccine Initiatives at the Bill & Melinda Gates Foundation. She is now based in the UK, having lived for several years in East Africa (Kenya and Ethiopia).