The Amarillo Department of Health confirmed late Wednesday afternoon they are investigating seven confirmed cases of E. coli 0157:H7.

A spokesperson for the department said that all current reported cases are with children and that no specific food has been linked to the outbreak. Four of the seven kids were hospitalized. While the investigation into the outbreak is ongoing, health officials said possible sources could include international travel, exposure to infected animals and human-to-human contact with infected individuals. Area physicians have been told about the outbreak and are working with the public health department to quickly identify any additional cases and potential risk factors.