Former President George H.W. Bush, who has been in a Houston hospital with a lingering cough since November, needs to "build up his energy" before he can be released, doctors said Sunday.
Methodist Hospital spokesman George Kovacik said in an emailed statement that doctors are still optimistic the 88-year-old Bush will make a full recovery, but are being "extra cautious" with his care.
Bush is in stable condition, he said.
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