ASHEVILLE - At least 108 people contracted Legionnaires' disease, a potentially life-threatening respiratory infection, at the Mountain State Fair, according to the North Carolina Department of Health and Human Services. One person has died from the disease.

Public health officials have yet to pinpoint the source of the outbreak, although they've declared the state-run WNC Agricultural Center safe for occupancy. All the rides and displays are long since gone.

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DHHS is asking anyone who attended the Mountain State Fair to complete a five-minute survey about when they were on fair grounds and whether they've experienced symptoms. Even information from people who didn't get sick is valuable — it will help nail down exactly when and where the contamination occurred.

Fill out multiple versions of the survey if multiple members of your household attended the fair — including children.

Western North Carolina Legionnaires' Disease Outbreak - Fair Attendee Survey

Who are the Legionnaires' patients?

State DHHS has analyzed 97 of the 108 confirmed cases of Legionnaires' disease. The patients are 24-90 years old, with a median age of 61. Sixty three percent of these cases resulted in hospitalization, and one Buncombe County patient died.

Five of the confirmed cases are actually Pontiac Fever, a milder illness also caused by the bacteria Legionella. Symptoms are the eponymous fever, muscle aches, headache, chills, nausea, vomiting or diarrhea, according to NCDHHS.

According to the CDC, about 10% of Legionnaires' cases are fatal. People who have contracted the disease typically present symptoms within 14 days of exposure to the bacteria. Since the Mountain State Fair ran Sept. 6-15, that incubation period should have closed by Sept. 29.

Check back with the Citizen Times for daily updates on the Legionnaires' outbreak.