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Study: mRNA COVID vaccines 90% to 93% effective in health workers

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A real-world study today finds that the Pfizer/BioNTech and Moderna mRNA COVID-19 vaccines were highly effective at preventing symptomatic COVID-19 among US healthcare workers at 33 sites in 25 states, including those in high-risk and minority racial groups.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 contactA 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

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