Health Officials Investigating KY E. Coli Case

A five-year-old Madison County, Kentucky, girl is on a ventilator at Kentucky Children's Hospital after being diagnosed by doctors with E. Coli.

Haley Caldwell is reported in critical condition.

Her family says Haley's 18-month-old sister also recently became ill, but was released from the hospital on Thursday.

Kentucky health department officials are now investigating what may have made the girls sick.