HURON -- At least 44 people became sick after attending or working at a Creative Health Care Management Convention at Sawmill Creek Resort in Huron, Ohio.
The event ran from September 10th to 13th.
Resort co-owner Greg Hill believes one of the attendees may have carried the virus. But extra precautions are now being taken in serving and preparing food and cleaning surfaces.
Erie County health officials have sent food and stool samples to the State of Ohio Health Department lab.
They are trying to pinpoint the cause of the illness. Several victim stool samples have come back positive for norovirus.
It can be spread in contaminated food , water and from person to person.
The sickness comes on quickly with nausea, vomiting, diarrhea and abdominal pain.
Many norovirus outbreaks have been traced to food that was handled by one infected person. It spreads from person to person.
Officials say the sickness has not been directly connected to the resort or its food and are awaiting more test results.
But it's rare to have so many people ill at one location.
Erie County Environmental Health Director Bob England says more than 70 people have reported being sick to date.
Other cases may or may not be connected to Sawmill cluster.
Some are hospital workers who had contact with incoming patients.
Authorities suspect the virus is at large in the population and there will be more cases. It is rarely fatal.
Residents are being advised to avoid contact with sick persons and be vigilant about washing their hands.
As of now England saws Sawmill is cooperating completely, but there is no definitive determination where the virus came from.