The Centers for Disease Control and Prevention says a passenger on a Northwest Airlines flight from Frankfurt, Germany, to Detroit has been diagnosed with tuberculosis.

Northwest says the passenger was on Tuesday's Flight 51 to Detroit Metropolitan Airport.

CDC spokeswoman Shelly Diaz said the risk is low that other passengers might contract tuberculosis. She said Sunday health officials were seeking to contact 17 passengers seated near the sick passenger so they can be tested for tuberculosis as a "cautionary move."

WXYZ-TV says the ailing passenger is being kept in isolation at a local hospital.

Diaz says details about the sick passenger weren't being released.

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