A Cal Poly student tested positive for norovirus and an additional 27 other students have similar symptoms, according to Dr. Greg Thomas, a campus physician.
The virus, which has symptoms that include nausea, vomiting and diarrhea, is believed to have been spread at the Stagecoach music festival in Indio, which was held April 25-27.
Thomas said norovirus is the primary cause of the stomach flu and lasts one to three days. Some of the students he has treated attended the music festival, and others came into contact with those that went to Indio.
Treatment includes adequate hydration and medicine for nausea, but people get over it quickly, Thomas said.
Its the same virus that can have big outbreaks on cruise ships, Thomas said. If a lot of people are contained in an area, it can spread quickly.
The Cal Poly physician said cases are dwindling on campus and were hoping that weve seen the worst of it.