MINNEAPOLIS (WCCO) — It’s disinfecting time at the U this week, after more than two dozen students have become sick in a suspected norovirus outbreak.

University spokesman Steve Henneberry says 28 students living in Frontier Hall fell ill earlier this week with diarrhea and vomiting.

He says they’re disinfecting Frontier and three other residence halls as a precaution, including two dining halls.

Henneberry says the university has notified all students about the outbreak, and is encouraging them to be extra-vigilant about handwashing, and to not share any food, drinks or eating utensils. He says the virus typically lasts 24 hours.