Most people infected in Provincetown covid outbreak were vaccinated, CDC study shows

“Although most cases were not hospitalized, thus showing the vaccine works in an important way, this study is portentous for the achievement of herd immunity,” said Andrew Noymer, an epidemiologist at the University of California at Irvine. “If the vaccinated can become infected (and, we believe, from other studies, potentially spread covid), then herd immunity becomes more of a mirage than oasis.”

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