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Long-term exposure to COVID-19 associated with reduced vaccine efficacy, Yale researchers find

A study led by the Yale School of Public Health and Yale School of Medicine, in collaboration with the Connecticut Department of Correction, found that high levels of exposure to the virus are negatively associated with vaccination efficacy and naturally acquired immunity.
United States Yale New Haven Hospital Albert Ko Margaret Lind Murilo Dorion Benjamin Oldfield

High levels of COVID-19 exposure can overcome protection from vaccination and prior infection

High levels of exposure to the virus that causes COVID-19 may reduce or overcome the protection that vaccination and prior infection provides, according to a new study by researchers from Yale University, the University of Florida, and the Connecticut Department of Correction.
United States Yale University Margaret Lind Matt Hitchings Jason Andrews Mary Lansing

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