Health officials are investigating an E. coli outbreak that has sickened nine people, including children, with illnesses linked to raw milk and cheese products from a California company.

The outbreak has resulted in at least one case of kidney failure among the patients. Health authorities report the outbreak is expanding as more cases are identified and investigated.

Patients who became ill have identified Raw Farm products as a common source, though the company disputes any connection between its products and the reported illnesses. The company has denied responsibility for the outbreak despite the ongoing investigation.

E. coli infections can cause severe illness, particularly in children and vulnerable populations. Symptoms typically include severe stomach cramps, diarrhea, and vomiting, with complications potentially including kidney failure in serious cases.

Raw milk and unpasteurized dairy products carry higher risks of bacterial contamination compared to pasteurized products, as the pasteurization process kills harmful bacteria that can cause foodborne illness. Health officials continue to investigate the source and extent of the current outbreak.