Doctors in the southern U.S. city of Houston, Texas say former president George H.W. Bush is in intensive care and in "guarded" condition at the Methodist Hospital.
The 88-year-old Bush is battling what doctors call a "stubborn fever." He entered the hospital last month with a severe cough.
Bush served one term as U.S. president from 1989 until 1993, after spending eight years as Ronald Reagan's vice president. He led the international coalition that drove Iraqi forces out of Kuwait in 1991.
He is the father of the 43rd president, George W. Bush.
Some information for this report provided by AP and AFP.