New Haven, Conn. — 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. The findings, published Aug. 19 in Nature Communications , suggest that in densely crowded settings, control measures that reduce levels of exposure to the virus — such as masking, improved ventilation, and distancing — may afford additional benefit in preventing new infections among people who have been vaccinated or previously infected.

https://www.miragenews.com/high-covid-19-exposure-may-diminish-vaccine-1069926/

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