CDC data shows that 74% of people who tested positive for the virus in Massachusetts outbreak were fully vaccinated
July 30, 2021 at 13:19 PM EDT
A federal investigation into a COVID-19 outbreak earlier this month in a part of Massachusetts that is home to Cape Cod and Provincetown found that 74% of the 469 infections were among vaccinated people, a finding that raises questions about the prevalence of breakthrough infections.
