Massachusetts on Tuesday reported 11,321 additional cases of COVID-19 among fully vaccinated people since last week, bringing the total since the start of the vaccination campaign to 88,968 cases, or 1.8 percent of all fully vaccinated people.
The Department of Health also reported an additional 61 deaths from COVID-19 among fully vaccinated people, bringing the total to 647 deaths among fully vaccinated people. The number of breakthrough deaths represents a small fraction of all vaccinated people and underlines the protection offered by the vaccines against serious illness and death.
The deaths accounted for 0.01 percent of the 4,905,450 people in Massachusetts who were fully vaccinated, the department said in its weekly update on groundbreaking COVID-19 statistics, including data reported through Saturday.
The department also reported 273 additional hospitalizations among fully vaccinated people, for a total of 2,716 hospitalizations. That is 0.05 percent of all fully vaccinated people.
Last week, the state reported 6,610 new cases, 34 additional deaths and 158 additional hospitalizations among fully vaccinated people.
State officials and public health experts have repeatedly emphasized that vaccination significantly reduces hospitalization, serious illness and death from COVID-19. They have encouraged booster shots for fully vaccinated people as a way to boost protection against the virus, amid data showing that immunity to the vaccines wanes over time.
According to the department, 4,938,005 people in Massachusetts have been fully vaccinated as of Tuesday.