BOSTON (WHDH) - The Massachusetts Department of Public Health on Tuesday reported 4,415 new breakthrough COVID-19 cases and 18 additional deaths among fully vaccinated residents.

As of Sept. 7, there have been 23,858 total breakthrough cases, up from the 19,443 cases that were reported on Aug. 28, new data shows.

There have also been 162 fully vaccinated residents who have died from COVID-19, up from the 144 deaths that were reported last week.

Health officials also reported 111 new hospitalizations among fully vaccinated residents, up from a previous mark of 651.

Data obtained earlier this summer showed that nearly three-quarters of COVID-19 breakthrough deaths in Massachusetts have been among vaccinated residents with at least one underlying condition and their average age was 82.5.

Massachusetts’ high vaccination rate among people over the age of 18 has been critical in keeping hospitalization numbers low, despite the ongoing surge in case counts, officials said.

The number of fully vaccinated people across the state currently sits at 4,506,678, public health data shows.

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