Ardent Health Services, headquartered in Nashville, Tenn., and operating in six different states, fell victim to a ransomware attack in late November that has taken its entire network offline.

Some 30 hospitals have been affected by this ransomware attack. While the attack didn’t disrupt patient care in Ardent hospitals, those in need of emergency medical attention are being redirected to other hospitals, as are some patients scheduled for non-emergent, elective procedures.