PAYSON — Utah County health officials issued a warning Wednesday about the outbreak of a food-borne illness that appears to be linked to a Payson dairy farm.

So far 15 people have tested positive for campylobacteriosis, an infectious disease caused by ingesting bacteria. Officials also say several others have reported symptoms similar to those caused by the bacteria.

The disease is not unusual and is rarely life-threatening, authorities say, but the recent outbreak is much larger than normal. "We basically have seen a fourfold increase" in the number of cases, said Lance Madigan, Utah County Health Department spokesman.

The disease usually causes diarrhea, cramping, abdominal pain and fever within one to 10 days after exposure. Some experience nausea or vomiting, as well.

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