LOS ANGELES (AP) - Campus officials believe it was a norovirus, not contaminated food, that sickened about 130 University of Southern California students this weekend.

University spokesman James Grant says a preliminary investigation found a norovirus to be the cause of campus illness, that led to 1 to 2 days of vomiting, stomach cramps and diarrhea.

Grant says the initial findings won't be confirmed until test results are returned from the county health department in two to three weeks.

The school has ordered 3,000 bottles of hand sanitizer and 2,000 containers of sanitizing wipes to distribute on Monday, when classes will resume as regularly scheduled.

The campus community was alerted about the virus early Saturday.

---