(Associated Press) Former President George H.W. Bush has been admitted to the intensive care unit at a Houston hospital “following a series of setbacks including a persistent fever,” but he is alert and talking to medical staff, his spokesman said Wednesday.

Jim McGrath, Bush’s spokesman in Houston, said in a brief email that Bush was admitted to the ICU at Methodist Hospital on Sunday. He said doctors are cautiously optimistic about his treatment and that the former president “remains in guarded condition.”

No other details were released about his medical condition, but McGrath said Bush is surrounded by family.

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