About The Study: In this retrospective cohort study, COVID-19 booster vaccinations were associated with significant protection against severe COVID-19, with a favorable number needed to vaccinate among persons with cancer. However, uptake of COVID-19 vaccine boosters was low, and interventions are therefore justified to increase COVID-19 vaccine uptake in this high-risk population.
Corresponding Author: To contact the corresponding author, Jacek Skarbinski, MD, email jacek.skarbinski@kp.org .
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(doi:10.1001/jamaoncol.2025.2020)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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JAMA Oncology