First came the fires. Then, there was ash and contaminated water. Now, some survivors of the Southern California wildfires are dealing with outbreaks of norovirus and other stomach ailments at a shelter set up to help evacuees.

The Pasadena Public Health Department said they will support the American Red Cross and onsite medical teams following a Norovirus outbreak at the city's evacuation center.

Illness typically lasts for one to three days but people can still be contagious after their symptoms have subsided.

Three people have tested positive for norovirus amid a cluster of 28, the Pasadena Public Health Department said on Friday.

The Pasadena Public Health Department reported Friday there was an outbreak of the gastrointestinal Norovirus at the American Red Cross’ Pasadena Evacuation Shelter for area residents displaced by the Los Angeles wildfires.

Multiple norovirus outbreaks have been reported in Chicago during the month of January, the Chicago Department of Public Health confirmed this week. According to the city’s health department, while individual cases are not typically reported,