Food Safety News reports that health officials in Wisconsin suspect three patients sickened by the same strain of E. coli O157:H7 contracted their illnesses after consuming raw milk, Wisconsin Department of Agriculture spokeswoman Raechelle Cline told Food Safety News Thursday.

All three patients reside in Manitowoc County, and they include a three year-old child and his or her mother.

Officials are currently testing samples of milk from the suspected dairy and will not identify it unless they prove a connection.

“Raw milk was the most likely commonality we’ve been able to identify,” Cline said.

The illnesses occurred in March, and the officials are unaware of any additional cases.

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