Recent shoppers should discard raw milk produced by The Family Cow in Chambersburg, Franklin County, because of a potential bacterial contamination, according to a news release from the state Departments of Health and Agriculture.

The Department of Agriculture received a consumer complaint and collected samples of raw, or unpasteurized, milk from the farm on July 29, the release said. Positive test results for Campylobacter were confirmed on Monday.

The Department of Health confirmed two cases of the infection in people who drank the raw milk, the release said. Illness usually occurs two to five days after ingesting the bacteria, and symptoms of infection include diarrhea, cramping, abdominal pain and fever.

Agriculture officials have ordered the owners of the farm to stop the sale of all raw milk until further notice, the release said.