Dr. Joseph Costa, the chief of critical care who treated the sickest coronavirus patients at Baltimore's Mercy Medical Center, died this weekend from Covid-19, the hospital confirmed to CNN. He was 56.

Dr. Joseph Costa, the chief of critical care who treated the sickest coronavirus patients at Baltimore's Mercy Medical Center, died this weekend from Covid-19, the hospital confirmed to CNN. He was 56. https://t.co/0GvznlQrzD

— CNN (@CNN) July 27, 2020