An E. coli outbreak at a day camp caused several children and staff members to be hospitalized and the camp to be shut down temporarily, reports

There were seven confirmed and seven probable cases of E. coli infection originating at the Palisades Country Day Camp & School, said Donna Leusner, spokeswoman for state Department of Health and Senior Services. Most of the patients are 5-year-old girls.

The Palisades Country Camp & School is for children ages 3 to 6. The campus includes a heated swimming pool, a petting zoo and a playground.

A representative from Hackensack University Medical Center said that two children with a confirmed diagnosis and one adult with a pending diagnosis related to the outbreak are being treated at the hospital.

The camp closed voluntarily Wednesday and plans to reopen Monday. State health officials are running tests to find the source of the outbreak.