Protecting infants against RSV begins before birth. At a Pfizer-sponsored symposium during ESCMID Global 2026, experts reviewed the latest evidence on maternal RSV immunization, including disease burden, effectiveness, safety, and implementation. Presentations by Professors Marta Nunes, Paolo Manzoni, and Dr Olivia Anselem highlighted how maternal vaccination protects against severe RSV disease in early infancy. Professor Beate Kampmann chaired the session.