Skip to main content
. 2021 Aug 9;181(10):1315–1321. doi: 10.1001/jamainternmed.2021.4392

Figure. Association Between Incarcerated Population Density, COVID-19 Community Incidence, and COVID-19 Incidence in Massachusetts State Prisons, April 21, 2020, to January 11, 2021.

Figure.

Incarcerated population density is reported as percentage of facility design capacity. In the counties in which state prisons are located, the COVID-19 incidence was, on average, less than 50 cases per 100 000 person-weeks from June 2020 to September 2020. COVID-19 incidence in these counties was, on average, greater than 250 cases per 100 000 person-weeks from December 2020 to January 2021. Error bars indicate 95% CIs.