George H. W. Bush

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Barbara Bush, 88, is in a hospital in Houston with a respiratory-related issue, according to her husband's office.

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Bush, 88, had been in Houston's Methodist Hospital for nearly two months. He was being treated for complications related to bronchitis and a stubborn fever. He's the oldest of the nation's four living former presidents.

The nation's 41st president, George H.W. Bush, has been in a Houston hospital since just after Thanksgiving. He went there for treatment of a persistent cough. Since then, he's developed a fever. Doctors are working to bring it down. Bush, 88, is said to be alert and bantering with his nurses.

Bush, 88, was admitted the day after Thanksgiving. He's being treated for bronchitis and could be released this weekend, a spokeswoman says. "This is not a life-threatening illness," she adds.