President Joe Biden has sent a message of support to Bill Clinton, as he recovers in hospital from a blood infection.
Mr Clinton, 75, had been in California to attend several events when he fell ill, and was rushed to the University of California Irvine Medical Centre.
The former president’s medical team gave an update on his condition to CBS on Friday morning.
CBS medical contributor David Agus said the former president had felt light headed and nauseous, and began vomiting at the first of several events he was scheduled to speak at.
Doctors discovered an infection in his blood, which they traced to his urine, and had been caused by the bacteria E.Coli, Dr Agus said.
Speaking to reporters, Mr Biden said he had been trying to connect with Mr Clinton.
“I know you’re asking about President Clinton, I’ve been exchanging calls, he seems to be doing well, and so when I talk to him, I will let you all know,” Mr Biden said.
Mr Clinton was “admitted to the hospital for close monitoring and administered IV antibiotics and fluids,” his physicians Alpesh Amin and Lisa Bardack said in a joint statement.
He was kept in the ICU for privacy and safety reasons and not because of any kind of seriousness of the illness.
Doctors ruled out any link to his history of cardiac and pulmonary conditions, saying that they hope to have him go home soon.
Mr Clinton underwent quadruple bypass heart surgery in 2004 and in 2010 had two stents inserted in an artery after experiencing chest pains and shortness of breath.
Hillary Clinton visited her husband in hospital on Thursday night, accompanied by her long-term aide Huma Abedin.
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