Figure 2.

COVID-19 case burden by prison system and population (May versus Nov).

Note: Cell shade darkens as the percentage of the population with confirmed cases of COVID-19 to date increases.

^aOn May 5, 2020, the U.S. population cumulative case prevalence was 385 per 100,000.

^bOn November 4, 2020, the U.S. population cumulative case prevalence was 2,900 per 100,000.

^cEstimated date when case burden among prisoners first exceeded case burden among staff.

^dJurisdictions marked n/a initially reported proportionately greater cases among prisoners than among staff.

^eJurisdictions marked never had higher case prevalence among staff for the duration of the study.

Apr, April; Aug, August; BOP, Bureau of Prisons; Jul, July; Jun, June; n/a, not applicable; Nov, November; Sep, September.