Consumers who purchased raw whole milk from Conoco View Dairy in Blain, Pennsylvania, should immediately discard the milk, which was sold in plastic half gallons, gallons and glass half gallons with the sell-by date of Feb. 16.

The warning was issued by the state Department of Agriculture, which reported that during routine sampling the product tested positive for campylobacter bacteria.

The plastic half gallon and gallon containers were sold in Perry County at Newport Health Foods, Leid’s Market, Skyline Market, Mountain Supply and The Pantry, as well as Castle Creek Farm in York County.

The glass half gallons were sold at the on-farm market.

Campylobacter can cause gastrointestinal illness including diarrhea, cramps, fever and pain. No illnesses have been attributed to the product, but people who consumed the milk should consult their physicians if they become ill.