Efficacy, Immunogenicity, and Safety of the Bivalent Respiratory Syncytial Virus (RSV) Prefusion F Vaccine in Older Adults Over 2 RSV Seasons

High RSV neutralizing titers were observed 1 month after RSVpreF vaccination in persons aged ≥60 years, with similarly robust responses across subgroups. These immune responses corresponded with high RSVpreF VE against RSV-associated LRTI. RSVpreF had a favorable safety profile over 2 seasons. Clinical Trials Registration. NCT05035212; EudraCT, 2021-003693-31.