COVID-19 Case and Mortality Rates in the Federal Bureau of Prisons.

Introduction: People living in correctional facilities are at high risk for contracting COVID-19. To characterize the burden of COVID-19 in the Federal Bureau of Prisons, inmate testing, case, and mortality rates are calculated and compared with those of the U.S.

Methods: Federal Bureau of Prisons data were derived from its inmate management system and a Federal Bureau of Prisons COVID-19-specific database. U.S. data were derived from the Centers for Disease Control and Prevention and the U.S. Census. Data were aggregated from February to September 2020 and accessed in September and November 2020. Testing rates were calculated for both the Federal Bureau of Prisons and the U.S. Case and infection fatality rates were calculated overall and by institution and compared with those of the U.S. An age- and sex-standardized mortality ratio was calculated.

Results: The Federal Bureau of Prisons tested more than half of its inmates (50.3%); its crude case and mortality rates were 11,710.1 and 77.4 per 100,000, respectively. Compared with the U.S., the case ratio was 4.7, and the standardized mortality ratio was 2.6. The infection fatality rate for both the Federal Bureau of Prisons and the U.S. was 0.7%. Among institutions that tested ≥85% of inmates, the combined infection fatality rate was 0.8% and ranged from 0.0% to 3.0%.

Conclusions: The Federal Bureau of Prisons COVID-19 case rates and standard mortality ratio were approximately 5 and 2.5 times those in U.S. adults, respectively, consistent with those of prisons nationwide. High testing rates and standardized death reporting could result in a more accurate infection fatality rate in the Federal Bureau of Prisons than in the U.S. Testing and other mitigation strategies, including reducing the population, have likely prevented further transmission and mortality in the Federal Bureau of Prisons.