Effectiveness of COVID-19 Booster on the Risk of Hospitalization Among Medicare Beneficiaries.

ABSTRACT:

Objective

To determine the effectiveness of booster vaccinations on the risk of hospitalization with coronavirus disease 2019 (COVID-19) and how it varies by enrollee characteristics and interval from the initial vaccination to receipt of a booster.

Patients and methods

This cohort study used 100% Medicare claims from January 1, 2020, through December 31, 2021, and matched 3,940,475 individuals who received boosters to 3,940,475 controls based on week and type of original COVID-19 vaccine and demographic and clinical characteristics. We compared the association of booster vs no booster with COVID-19 hospitalization using Cox proportional hazards regression models controlling for patient characteristics. We also determined the association of time from original vaccine to boos

SUBMITTER: Mehta HB 

PROVIDER: S-EPMC9273609 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature