August 6, 2021
Morbidity and Mortality Weekly Report
Massachusetts Department of Public Health
“What is added by this report? In July 2021, following multiple large public events in a Barnstable County, Massachusetts, town, 469 COVID-19 cases were identified among Massachusetts residents who had traveled to the town during July 3–17; 346 (74%) occurred in fully vaccinated persons. Testing identified the Delta variant in 90% of specimens from 133 patients. Cycle threshold values were similar among specimens from patients who were fully vaccinated and those who were not.”
Product of a state health agency published in a CDC periodical.
Works of the United States government are not entitled to domestic copyright protection under U.S. law and are therefore in the public domain.
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breakthrough cases,clinical cases,COVID-19,vaccines