Idaho investigating raw milk outbreak after dozens become ill

BOISE, Idaho (KIFI) — Idaho health officials are investigating an outbreak of illnesses linked to the consumption of raw milk that has affected nearly 60 people across the state.

According to the Idaho Department of Health and Welfare, at least 45 people have tested positive for campylobacteriosis, a bacterial infection that can cause diarrhea, fever, stomach cramps, nausea and vomiting.

Health officials say the illnesses have been reported since May 19, and investigators believe additional cases may still be identified as the investigation continues.

Most of those who became sick reported drinking unpasteurized, or raw, milk from two separate milking operations, one in northern Idaho and one in southern Idaho.

The Idaho Division of Public Health is working with multiple local health districts to determine the source of the contamination and identify any affected batches of milk.

Officials say both dairy operations are cooperating with the investigation and are working with health agencies to identify and address potential sources of contamination.

Raw milk has not been pasteurized, a process that kills harmful bacteria while maintaining the milk's nutritional value. Health officials warn that raw dairy products can contain bacteria that cause illness, especially in young children, pregnant women, older adults and people with weakened immune systems.

Symptoms of campylobacteriosis typically begin two to five days after exposure and can last about a week. In some cases, complications can develop and persist longer.

Anyone who develops symptoms after consuming raw milk or raw milk products is encouraged to seek medical care and contact their local public health district.

The investigation remains ongoing.