(CNN) — Oklahoma health officials said Friday they are searching for the source of a rare form of E. coli that has killed one person and sickened 116 others in the northeastern part of the state.
The subtype of bacteria — called E. coli 0111 — is "not normally found in this form of outbreak," said Leslea Bennett-Webb, director of communication for the Oklahoma State Department of Health.
More than 50 people have been hospitalized and nine people — six of them children — have been placed on dialysis, she said.
