The study revealed that a covid vaccine significantly reduced hospital visits among healthy adults by nearly 50% last winter. This finding highlights the vaccine’s role in limiting severe outcomes of the virus.
The development gained attention when the study, halted earlier this year due to methodological debates, was finally published in JAMA Network Open, a respected medical journal. Initially, the CDC’s interim director had withheld publication in CDC’s usual scientific report, citing concerns over the methodology used.
Despite these controversies, the study’s release adds to the growing body of research supporting vaccine effectiveness, contributing to ongoing public health discussions.
In the image above from 2022, a woman in Maryland receives her Moderna covid-19 vaccine, showcasing the ongoing efforts in vaccination campaigns during the pandemic.

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