Respiratory Syncytial Virus Vaccine Effectiveness Among US Older Adults, 2023-2024 Season

In this cohort study of US older adults, both RSVPreF3+AS01 and RSVpreF vaccines had high effectiveness against RSV-related hospitalization and death during the 2023-2024 season. RSV vaccines demonstrated substantial effectiveness within this high-risk older adult population, including among immunocompromised individuals and across all ages 65 years or older. This large postmarketing noninterventional study provides clinical evidence of RSV vaccine effectiveness in the first year of vaccine approval.

Corresponding Author: Yun Lu, MS, PhD, Center for Biologics Evaluation and Research, US Food and Drug Administration, 10903 New Hampshire Ave, Bldg 71, Room 5242, Silver Spring, MD 20993-0002 (yun.lu@fda.hhs.gov).

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