The Minnesota Department of Health have announced that ground beef patties purchased from Sam’s Club stores in Minnesota have been identified as the source of an E. coli outbreak.

Hamburger patties purchased from Sam’s Club stores in Eagan, Maple Grove and White Bear Lake have been implicated as the cause of 4 cases of E. coli infection.

All four cases were children. Two of the cases developed hemolytic uremic syndrome and were hospitalized. One case has been discharged and one remains hospitalized.

The brand name of the implicated frozen ground beef patties was “American Chef’s Selection Angus Beef Patties.”