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Mass. reports 45,029 breakthrough cases, raising total to 3.5 percent of fully vaccinated people

A sign, in Spanish and English, points the way to a vaccination clinic in Lawrence.Charles Krupa/Associated Press

Massachusetts on Tuesday reported 45,029 more COVID-19 cases among fully vaccinated people since last week, bringing the total since the beginning of the vaccination campaign to 179,594 cases, or 3.5 percent of all fully vaccinated people.

The Department of Public Health also reported 88 more COVID-19 deaths among fully vaccinated people, bringing the total to 942 deaths among those fully vaccinated. The number of breakthrough deaths represents a tiny fraction of all vaccinated people and underscores the protection the vaccines provide against severe illness and death.

The deaths accounted for 0.02 percent of the 5,090,635 people in Massachusetts who were fully vaccinated, the department said in its weekly update on breakthrough COVID-19 metrics, which included data reported through Saturday.


The department also reported 370 more hospitalizations among fully vaccinated people, for a total of 3,909 hospitalizations. That represents 0.08 percent of all fully vaccinated people.

Last week, the state reported 20,247 new cases, 70 more deaths, and 353 more hospitalizations among fully vaccinated people.

State officials and public health experts have repeatedly stressed that vaccination greatly reduces hospitalization, severe illness, and death as a result of COVID-19. They have encouraged booster shots for fully vaccinated people as a way to shore up protection from the virus amid data that show immunity from the vaccines wanes over time.

As of Tuesday, 5,097,188people in Massachusetts have been fully vaccinated, according to the department.

Christina Prignano can be reached at christina.prignano@globe.com. Follow her on Twitter @cprignano. Amanda Kaufman can be reached at amanda.kaufman@globe.com. Follow her on Twitter @amandakauf1.