Massachusetts vaccine breakthrough case numbers have more than doubled in one month, from 15,739 breakthrough cases on the 25th August 2021, to 32,345 on September 22nd 2021.
On 25th August 2021, there were 15,739 breakthrough cases and 131 deaths. Link
On 7th September 2021, there were 23,858 breakthrough cases and 162 deaths. Link
On 15th September 2021, there were 27,777 breakthrough cases and 194 deaths. Link
On 15th September 2021, there were 32,345 breakthrough cases and 217 deaths. Link
