Source Link: https://www.bostonherald.com/2021/09/07/massachusetts-coronavirus-breakthrough-cases-jump-4415-last-week-more-than-600-fully-vaccinated-people-a-day/ Excerpt: 18 breakthrough deaths were reported last week Breakthrough cases of the coronavirus continue to climb in Massachusetts. (Herald file photo.) By RICK SOBEY | rick.sobey@bostonherald.com | Boston Herald PUBLISHED: September 7, 2021 at 3:50 p.m. | UPDATED: September 7, 2021 at 3:58 p.m. More than 4,000 fully vaccinated people in Massachusetts tested positive for the coronavirus last week, ...
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