The Washoe District Health Department today reported that test results for six of the individuals who got sick came back from the Nevada State Public Health Laboratory linking the illness to norovirus. Washoe spokeswoman Tracie Douglas said the health department has been surveying those who became ill since Sunday.

Douglas said the only common link among those who became ill is that they attended a western states girls club volleyball tournament at the Reno Sparks Convention and Visitors Authority. Some of those who became ill stayed at the Reno Hilton.

Those who got sick complained of vomiting, diarrhea and nausea, and some reported fevers of 103 degrees.

Noroviruses are named after the Norwalk virus, which was identified as the cause of an outbreak of gastroenteritis in Norwalk, Ohio, in 1968. The incubation period for these illnesses is usually between 24 and 48 hours, with symptoms lasting from 25 to 60 hours.

Recovery is usually complete and there is no evidence of serious long-term side effects, Douglas said. Reno health officials ask that anyone who suffered from gastroenteritis and was affiliated with the tournament call them at (775) 328-2434.