The study, published in the New England Journal of Medicine, follows the release of interim study data in Morbidity and Mortality Weekly Report on May 14, 2021.

Effective regardless of chronic disease, patient contact

A team led by Centers for Disease Control and Prevention (CDC) researchers estimated vaccine effectiveness (VE) after receipt of one or two vaccine doses in 1,482 healthcare personnel who tested positive for COVID-19 and had at least one symptom, compared with a 3,449-member control group who tested negative.

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