By CBSLA Staff

ORANGE (CBSLA) – Former President Bill Clinton remained at UC Irvine Medical Center Saturday, where he is being treated with antibiotics for an infection that has kept him hospitalized since Tuesday night, but a spokesman said his condition is improving.

“President Clinton has continued to make excellent progress over the last 24 hours. He will remain overnight at UC Irvine Medical Center to continue to receive IV antibiotics before an expected discharge tomorrow,” Angel Ureña, spokesperson for the former president, tweeted Saturday.

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Bill Clinton, on Tuesday, was admitted to the intensive care unit for treatment of a urinary tract infection that had spread to his bloodstream. Officials said he was treated in the ICU more out of privacy than the nature of the illness.

Hillary and Chelsea Clinton, along with several others were seen making their inside UCI Medical Center to visit the former president.

Cameras were rolling outside UC Irvine Medical Center as Hilary and Chelsea Clinton, and their entourage, went inside to visit the former president who is recovering from a urological sepsis infection.

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Clinton also received a phone call Friday from President Joe Biden.

“I’ve been exchanging calls. He seems to be, God willing, doing well,” President Biden said.

CBS News medical contributor Dr. David Agus has been in contact with Clinton’s doctor, who gave him permission to talk about the former president’s symptoms. Agus said doctors pinpointed the source of Clinton’s infection as e-coli, which was present in his urine.

“He was disoriented and he wasn’t speaking clearly. He was nauseous and vomiting and they were very scared. He was put on what we call a broad spectrum of antibiotics, so several antibiotics. So, once they identified it as e-coli, they were down to one intravenous antibiotic,” Agus said.

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Clinton had been attending several private events in Southern California for the Clinton Foundation before being rushed to the hospital for fatigue.