A new vaccine to protect against a disease caused by the respiratory syncytial virus (RSV) has received a positive accelerated assessment from the European Medicines Agency. If approved, Abrysvo would be used for the passive immunisation of infants from birth through six months of age following administration to the mother during pregnancy. It would also be indicated for the active immunisation of adults 60 years and older. A formal decision is still to be issued by the European Commission.