From the Introduction: "'The CDC [Centers for Disease Control and Prevention] has noted that the confined nature of correctional facilities, combined with their congregate environments, 'heighten[s] the potential for COVID-19 [coronavirus disease 19] to spread once introduced' into a facility.' According to BOP [Federal Bureau of Prisons] data, as of March 1, 2021, 47,922 inmates and 6,500 BOP staff in BOP-managed institutions and community-based facilities had tested positive for COVID-19. In those institutions where widespread inmate testing has been conducted, the percentage of inmates testing positive has been substantial. 'During our fieldwork, Metropolitan Correctional Center (MCC) Chicago began conducting widespread inmate testing for COVID-19.' As of May 8, 2020, MCC Chicago inmates testing positive for COVID-19 approximated 18 percent (110 of 608) of the institution's population. 'As of February 28, 2021, there were six active inmate COVID-19 cases in the institution.'"
Department of Justice, Office of the Inspector General, Pandemic Response Report 21-053
U.S. Department of Justice Office of the Inspector General: https://oig.justice.gov/