I found this on Excite news...
"Maggots Infested Noses of Two Comatose Patients
CHICAGO (Reuters) - Two comatose patients had maggots growing in their noses as a result of a housekeeping lapse at a Missouri hospital, researchers said on Monday.
A canteen and storage areas at Kansas City's Veteran's hospital were not properly cleaned after staff cuts in 1998, and the hospital hired exterminators for a massive infestation of mice.
Scattered mouse carcasses through the hospital brought flies, which somehow invaded the hospital's intensive care unit and laid eggs in the "fetid nasal discharge" of the two comatose patients, Dr. Richard Beckendof of the Veteran's hospital wrote in the Archives of Internal Medicine, a medical journal published by the American Medical Association.
One patient died two days after the maggots were removed, though neither patient was believed harmed by them."