COLUMBUS, Ohio (WTVN) -- Three cases of the mumps have been detected at a central Ohio high school.

Columbus Public Health says they are working with school nurses at Worthington Kilbourne High School to deal with a cluster of cases. Seven students have been sent home for the rest of the school year because of the illness.

"Six of them were un-vaccinated," said Columbus Public Health spokesman Jose Rodriguez. "One child had only received one vaccine."

The number of cases is up to 366 in Ohio. That number continues to grow by about 5 cases each day.

"Which is five times in one day what we would normally see in a year," Rodriguez said.

More than 60 percent of the all the cases in the United States are in the state of Ohio right now.

There is also concern that the cases could spread at summer camps. Columbus Public Health plans to kick off an awareness campaign soon to try and prevent that.