Massachusetts health officials on Tuesday reported nearly 4,000 new breakthrough cases over the past week, and 46 more deaths. In the last week, 3,741 new breakthrough cases -- infections in people who have been vaccinated -- were reported, with 125 more vaccinated people hospitalized, Massachusetts Department of Public Health officials said Tuesday. Their report brings the total number of breakthrough cases to 40,464, and the death toll among people with breakthrough infections to 300.
