Two metro Detroit children have been infected with E. coli, authorities said Friday.

The Michigan Department of Health and Human Services says the cause is unpasteurized milk. The separate cases have been reported in Oakland and Wayne counties.

Officials are now reminding residents of the potential risks associated with consuming raw milk.

“The public should be aware that raw milk and other unpasteurized dairy products have not been heat treated and, therefore, pose a potentially serious risk to human health,” said Dr. Eden Wells, chief medical executive for MDHHS.