The Seaforth Community Hospital is temporarily cutting its hours because of staffing shortages.
The emergency department will close at 9 p.m. Wednesday and reopen at 7 a.m. Thursday with regular 24-hour service resuming.
Anyone requiring immediate medical attention should call 9-1-1 and paramedics will remain available to the community and re-route to the nearest available emergency department.
The closest 24-hour emergency departments to Seaforth are in Exeter, Goderich and Stratford.