AIR FORCE ACADEMY, Colo. (AP)  The Air Force Academy says 84 cadets are being kept in isolation after showing symptoms of an undetermined respiratory illness.

Academy spokeswoman Capt. Corinna Jones told The Gazette in Colorado Springs Thursday that most of the cadets are "doolies", members of the incoming freshman class who began rigorous training on June 25. She said the cadets under isolation began developing symptoms like coughing within the past two days.

The academy has contacted the U.S. Centers for Disease Control and Prevention and the Air Force Surgeon General's office.

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