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The body of 2024–2025 analyses shows a consistent pattern: compared with unvaccinated adults, though absolute protection varied by age, immune status, and time since vaccination. Key U.S. surveillance...
Vaccination reduces the risk of COVID-19 hospitalization and severe in-hospital outcomes, but the magnitude of reduction varies by vaccine formulation, population, timing, and study design; recent 202...
Available studies and public-health reviews show mRNA boosters reduce hospitalizations and emergency visits compared with being unboosted, particularly in older adults; head‑to‑head comparisons betwee...
Peer-reviewed and network studies from 2022–2024 consistently report that mRNA booster doses reduce from Omicron subvariants but the magnitude of protection varies by subvariant, vaccine formulation, ...
COVID-19 vaccines substantially reduce the risk of severe illness, hospitalization, and death across multiple studies and reviews, though protection against infection—especially symptomatic or asympto...