The New York state departments of Health and Agriculture and Markets warned residents in Tompkins County and surrounding areas not to consume unpasteurized raw milk produced at Jerry Dell Farm, 39 Fall Creek Road, Freeville, because of possible bacterial contamination.

In a press release Thursday, the Department of Health said two people who became ill after consuming raw milk from the farm tested positive for Campylobacter bacteria.

According to the release, the bacterial infection can cause diarrhea, fever, abdominal pain, nausea, headache and muscle pain. The illness usually occurs two to five days after ingestion and generally lasts for seven to 10 days.

Tests confirmed that milk collected on the date that the first illness was reported, Sept. 22, contained Campylobacter.

The health department reported that raw milk sales at the Jerry Dell Farm will be suspended until tests show that the milk is free of pathogens.