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Ant invasion shuts down surgeries at Canadian hospital after sterile rooms are compromised

The hospital said there was no risk.

A large cluster of ants with wings near the corner of a wooden panel and a light-colored floor.

Photo Credit: iStock

A hospital in Southern Manitoba halted procedures because ants invaded sterile operating rooms, CBC News reported.

The situation at Carman Memorial Hospital is a reminder of how quickly small problems can disrupt essential care.

The hospital, which is operated by Southern Health, suspended minor elective surgeries after pavement ants were found inside the facility. 

Staff reportedly saw the insects crawling under doors and moving through hallways, raising concerns about whether operating rooms could remain sterile for safe procedures.

Hospital staff took "precautions to remedy the situation in an effort to avoid any further surgical cancellations and any chance that the ant problem may get worse," CBC News stated.

Southern Health cleaned drains and placed sticky tape around the hospital. 

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The hospital said the ants did not pose a danger to patients or staff, and other procedures were not impacted. Still, even a single insect in a surgical setting is too many.

Pavement ants are common in late spring and often enter buildings in search of food. They typically nest beneath sidewalks, driveways, and foundations, which can make them difficult to eliminate once they find a way inside. Steps such as sealing entry points can prevent indoor pest problems.

Carman Memorial said it acted "immediately" to bring the infestation under control and keep the problem from worsening. Southern Health noted there was no risk to patients, staff, or the building.

A spokesperson for Manitoba Health Minister Uzoma Asagwara said patients affected by the delays were contacted. 

Southern Health added that the ants were "simply seeking food sources inside buildings as ants are known to do."

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