The Massachusetts Department of Public Health has released a review of breakthrough COVID-19 cases in vaccinated Massachusetts residents and found nearly 97% of all breakthrough cases in the Commonwealth have not resulted in hospitalization or death. Additionally, the review found unvaccinated residents are five times more likely to become infected than fully vaccinated residents (two doses of the Moderna or Pfizer vaccine or one dose of Johnson & Johnson) and unvaccinated residents are 31 times more likely to become infected than fully vaccinated residents who have received a booster.
The review also found that 99.9% of breakthrough cases among fully vaccinated people under the age of 60 did not result in death. Among the breakthrough cases for residents over the age of 60, 97% did not result in death. No deaths have been reported in breakthrough cases among those under age 30.
"The data are clear. This review shows that fully vaccinated people in Massachusetts have near-universal protection from severe illness and death and that boosters are demonstrating even stronger protection from COVID," said Health and Human Services Secretary Marylou Sudders. “Amid the season of gathering indoors and the emerging Omicron variant, the time to get vaccinated and boosted is now. It is the best gift of protection for yourself and your loved ones.”