Skip to content
Effectiveness in 2025–2026
- Hospitalization Protection: Updated vaccines reduced hospitalizations by ~55% among adults with COVID-like illness.
- Emergency Care Visits: Effectiveness against ED/urgent care visits was ~50%, showing strong real-world impact.
- Variant Adaptation: Omicron-adapted boosters provide superior protection compared to older monovalent doses.
Safety Profile
- Adverse Events: Serious side effects remain rare, with most reactions mild (fever, fatigue, injection-site pain).
5
Skip to content