>majority of "breakout cases" are among the 'vaccinated'
The Department of Public Health tracked a cumulative 12,641 confirmed COVID-19 infections among those fully vaccinated in the state to date and a total of 124 deaths.
https://www.google.com/amp/s/www.nbcboston.com/news/local/over-12500-breakthrough-covid-cases-reported-in-mass-124-deaths/2469631/%3famp