Closing the emergency departments at Crozer-Chester Medical Center and Taylor Hospital to ambulance traffic is a critical step in emptying the hospitals of patients.

Crozer Health's closing is already impacting emergency medical services in Delaware County, with first responders sounding the alarm.

The largest health system in Delaware County began closing two hospitals Wednesday after failing to find a buyer amid bankruptcy proceedings. Why it matters: Crozer Health's shutdown will lead to thousands of layoffs and a major shakeup for health care across the region.