Local health officials have confirmed that some attendees at a popular science fiction convention last weekend caught norovirus.
Samples from ill attendees tested positive for norovirus, Benton-Franklin Health District officials said Friday.
Norovirus is a group of highly contagious viruses that infect the stomach and intestines.
Some of RadCon's more than 2,000 attendees complained of nausea, vomiting and diarrhea, and came down with the symptoms and recovered rapidly.
Attendees at other public events, schools and sports teams also have reported similar symptoms, according to the health district.
There is no treatment or vaccine for norovirus, and symptoms typically end in 48 hours, the health district said.
Noroviruses can be spread person to person, by consuming contaminated food or water, or by touching contaminates surfaces, such as doorknobs, balls and faucets, the health district said.
To prevent its spread, wash hands with soap and warm water. Alcohol-based hand gels do not replace hand washing when it comes to norovirus, the health district said.
Child care, health care and food workers with symptoms should stay home, according to the health district.
For more information, go to bfhd.wa.gov.