State health officials: 0.1% of those fully vaccinated have later contracted COVID-19

BOSTON — State health officials reported Friday that 1,798 people in Massachusetts have tested positive for COVID-19 after being fully vaccinated. Those positive case numbers are as of April 27.

Those breakthrough cases -- defined as a positive case of COVID-19 in someone fully vaccinated for more than 14 days after a complete series -- represent 0.1% of the fully vaccinated people in Massachusetts. As of April 27, more than 2.3 million people were fully vaccinated in the commonwealth.

>>>MORE: COVID-19 updates: 26 Mass. cities & towns in red Thursday, down from 48 last week

The Centers for Disease Control and Prevention said that breakthrough cases occur in only a small percentage of vaccinated people.

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