The Brazos County Health Department and the Texas Department of State Health Services are investigating five cases of a possible fatal strain of E. coli O157:H7 found in Brazos County residents.

The health department confirms that two children, Eighteen-month-old Noah Melton and 4-year-old Jack Melton, are in the hospital. According to news reports, the boys are in fair condition at Texas Children’s Hospital in Houston. Three local adults have also been confirmed to have E. coli O157:H7. All cases have been confirmed within the last week by the health department, the most recent coming Monday.

Three additional local cases are also under investigation, but have yet to be confirmed.

The sources of the E. coli O157:H7 have not been confirmed.