A girl hospitalized with an E. coli infection after eating at a restaurant was expected to be transferred out of intensive care by the weekend, a hospital spokeswoman said Friday.

The 12-year-old girl was one of 10 people sickened by the bacteria after eating at the Foothill Ranch restaurant in the city of Lake Forest. The source of the contamination has not been identified, the Orange County Health Agency said in a statement. 

The girl could be transferred to a general care ward of Children’s Hospital of Orange County as early as Friday evening.