Grey Bruce Health Services is keeping the medical unit 6-1 closed to new admissions due to a VRE outbreak.
Hospital officials had hoped to re-open the unit on Sunday.
But Chief Quality Control Officer Sonja Glass tells us there are two patients whose preliminary results require further testing.
Glass hopes to have new test results on Tuesday.
Unit 6-1 has been closed to new admissions since routine tests last Sunday found VRE in two patients and the unit was put in isolation.
Infected patients can have visitors, but they must wash their hands first and wear gowns and gloves.
The 6-2 medical unit remains open to admissions and there has been no reduction in service.
VRE is a bacteria commonly found in the bowels of humans and animals.
VRE can be passed on if you do not wash your hands and touch objects that other people have touched, such as bed rails, telephones or doorknobs.