TULSA, Oklahoma – A third case of E. coli has been confirmed in a Tulsa County child, the Tulsa Health Department said Tuesday.
The Health Department is waiting on lab results to confirm a fourth suspected case.
Kaitlin Snider, with the Tulsa County Health Department, said one child remains hospitalized.
Authorities are trying to determine the source of the infection. Three are students at Boston Avenue Weekday Preschool in Tulsa, the other is a sibling of a student.
Snider said more than 100 students, staff and faculty at the preschool have been interviewed.
"Determining where the E. coli infection originated is likely to be undetermined due to the variety of ways E. coli infections can occur," Kaitlin Snider said.
"Our first concern is for the health and safety of these children and all children in our care," the preschool said in a statement last week."We pray that the source of the outbreak will be identified quickly, that the children who have been involved will recover quickly and completely."