BOISE, ID — State health officials are urging residents to be aware of the risks associated with raw milk after a recent increase in reported illnesses across Idaho, according to the Idaho Department of Health and Welfare.

Since Aug. 1, at least 23 cases of Campylobacter—including six children under age 12—and three cases of Shiga toxin-producing E. coli (STEC) have been confirmed in people who reported drinking raw milk before becoming ill. Several individuals required medical care, and two were hospitalized, the department said.

STEC infections can cause serious complications, particularly in young children. Reported cases span multiple regions of the state, and the illnesses have been linked to raw milk purchased from various brands.

Health officials warn that raw, unpasteurized milk can carry harmful bacteria such as Campylobacter, E. coli, Listeria, and Salmonella, all of which are killed during pasteurization. Infections may lead to vomiting, diarrhea, abdominal pain, fever, and dehydration. High-risk groups—including young children, pregnant women, older adults, and individuals with weakened immune systems—are especially vulnerable to severe illness.

Raw milk sales are legal in Idaho through multiple outlets, but state law does not require testing for disease-causing bacteria. Officials advise anyone who recently consumed raw milk and is experiencing symptoms to seek medical care promptly and to contact their local public health district to report an illness.

The Idaho Department of Health and Welfare encourages residents to familiarize themselves with the risks associated with unpasteurized dairy products. More information is available at healthandwelfare.idaho.gov.