George H.W. Bush in 'guarded condition' in intensive care
"The president is alert and conversing with medical staff, and is surrounded by family," McGrath said in a statement.
"Following a series of setbacks including a persistent fever, President Bush was admitted to the intensive care unit at Methodist Hospital on Sunday where he remains in guarded condition," McGrath said.
Doctors at Methodist Hospital "continue to be cautiously optimistic about the current course of treatment," McGrath said.
The 88-year-old was admitted to the hospital Nov. 23 for bronchitis.
Bush, the 41st U.S. president and a Republican, took office in 1989 and served one term in the White House. The father of former President George W. Bush, he also served as a congressman, ambassador to the United Nations, envoy to China, CIA director and vice president for two terms under Ronald Reagan.