In the federal prison system, which incarcerates more than 150,000 people, a little under 2% of inmates have been tested, and 70% of those tested have been found to be positive.
At the Cook County jail the infection rate is 7%. In the New York City jails it is 8%. At Parnall Correctional Facility in Michigan, 10% of inmates and 21% of staff have tested positive.
And at the Marion Correctional Institution in Ohio — the largest hotspot in the country — more than 2000 inmates have tested positive — about 80% of the prison’s inmates.
In many parts of America the coronavirus outbreak behind bars is far more widespread than previously believed.