A Massachusetts COVID outbreak in July could show how vaccines work
A recent coronavirus outbreak in Provincetown, Massachusetts numbered 500, of which 74% were among the vaccinated. The startling data led to Centers for Disease Control changing their guidelines — and scores of misleading headlines sowing doubt about the efficacy of vaccines. Hannah Knowles, one of the reporters behind a Washington Post article that argues the cluster was a stress test the vaccines passed, joins Anne-Marie Green on CBSN AM to discuss.
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