Data Source: Compiled by the Prison Policy Initiative from the UCLA Law COVID-19 Behind Bars Data Project, The Marshall Project, and several state-specific data sources (see article footnote 1). (Map: Wendy Sawyer, 2021)

This map originally appeared in With the majority of corrections officers declining the COVID-19 vaccine, incarcerated people are still at serious risk.

See the appendix to this article for a table with details about all 37 prison systems for which we gathered data.