For more than a year, the biggest worry at hospitals has been COVID-19.
Now, a dangerously low blood supply is a new concern, and holiday weekend gun violence only made matters worse in Chicago.
CBS 2 Investigator Megan Hickey reports.
Blood Banks In Chicago And Beyond Face Critical Shortage
Blood banks across the city are feeling the impact of the nation's dangerously low blood supply – and after a violent holiday..
CBS 2 Chicago