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Network Characteristics and Visualization of COVID-19 Outbreak in a Large Detention Facility in the United States — Cook County, Illinois, 2020
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06 2020
Source: MMWR Morb Mortal Wkly Rep. 69(44):1625-1630
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Alternative Title:MMWR Morb Mortal Wkly Rep
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Description:Correctional and detention facilities have been disproportionately affected by coronaVirus disease 2019 (COVID-19) because of shared space and movement of staff members and detained persons within facilities (1,2). During March 1-April 30, 2020, at Cook County Jail in Chicago, Illinois, >900 COVID-19 cases were diagnosed across all 10 housing divisions, representing 13 unique buildings.| Movement within the jail was examined through network analyses and visualization, a field that examines elements within a network and the connections between them. This methodology has been used to supplement contact tracing investigations for Tuberculosis and to understand how social networks contribute to Transmission of sexually transmitted infections (3-5). Movements and connections of 5,884 persons (3,843 [65%] detained persons and 2,041 [35%] staff members) at the jail during March 1-April 30 were analyzed. A total of 472 (12.3%) COVID-19 cases were identified among detained persons and 198 (9.7%) among staff members. Among 103,701 shared-shift connections among staff members, 1.4% occurred between persons with COVID-19, a percentage that is significantly higher than the expected 0.9% by random occurrence alone (p<0.001), suggTesting that additional Transmission occurred within this group. The observed connections among detained persons with COVID-19 were significantly lower than expected (1.0% versus 1.1%, p<0.001) when considering only the housing units in which initial Transmission occurred, suggTesting that the systematic isolation of persons with COVID-19 is effective at limiting Transmission. A network-informed approach can identify likely points of high Transmission, allowing for interventions to reduce Transmission targeted at these groups or locations, such as by reducing convening of staff members, closing breakrooms, and cessation of contact sports.
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Pubmed ID:33151915
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Pubmed Central ID:PMC7643900
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