Jails can spread coronavirus to nearby communities, study finds - CNN

"Pandemic reality has brought us to an unprecedented collective realization of national and global interconnectedness in which the risks of vulnerability to disease for America's incarcerated and the world's poor, for example, threaten all of us, although clearly not equally."

The researchers looked at booking, release and Covid-19 data from the Cook County Jail, demographic data from the US Census and the American Community Survey and Covid-19 data from the Illinois Department of Public Health to examine the epidemiological connection between jail and community at the zip code level.