Former US president Bill Clinton has remained in hospital for a fourth night, where he has reportedly been recovering from a urological infection.
The 75-year-old was visited by his wife, Hillary Clinton, at the University of California Irvine Medical Center.
He was admitted to the hospital on Tuesday after suffering from fatigue and has received both IV antibiotics and fluids, his doctors said.
CNN reported that his doctors believe he has a urinary tract infection that has spread to his bloodstream.
It is unclear when he will be released.
On Friday, President Joe Biden said he has been “exchanging calls” about Mr Clinton and added that “he seems to be, God willing, doing well”.
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Mr Biden and Mr Clinton spoke by phone on Friday afternoon, White House spokesperson Karine Jean-Pierre said.
“President Biden and President Clinton look forward to seeing each other again soon,” Ms Jean-Pierre said in a statement. “President Biden wishes President Clinton a speedy recovery.”
Speaking on Friday evening, Mr Clinton’s spokesman Angel Ureña said the former president would remain in hospital overnight “in order to receive further IV antibiotics”.
He added: “All health indicators are trending in the right direction, including his white blood count which has decreased significantly.
“President Clinton continues to be in excellent spirits, and is deeply grateful for the outstanding care he is receiving and the well wishes that people have sent from across America and around the world.”
Mr Clinton has seen several health scares since he left the White House in 2001.
He underwent quadruple bypass surgery after he experienced prolonged chest pains and shortness of breath in 2004.
He also went to hospital for surgery for a partially collapsed lung in 2005. In 2010, he had a pair of stents implanted in a coronary artery.