More than 700 computers at the University of Utah have been infected with the Conficker worm.
The hit includes computers at the university's three hospitals, the Associated Press reported early Sunday.
University spokesman Chris Nelson said the outbreak was detected Thursday, the AP reported. By the next day, the worm had struck at the hospitals, medical school, and the nursing, pharmacy, and health colleges.
Patient records have not been touched, Nelson said. IT cut off Net access for up to six hours on Friday in order to isolate the virus, the AP reported.