Former US President Bill Clinton has been released from hospital after suffering from a urinary tract infection.

He will continue his antibiotic treatment in New York, wrote his spokesman Angel Ureña on Sunday morning (local time), citing the doctor responsible on Twitter.

His fever and the number of white blood cells have meanwhile "normalized".

The 75-year-old was admitted to the University of California Irvine Medical Center on Tuesday and treated in the intensive care unit of the hospital in California.

The urinary tract infection had spread in his bloodstream, it had been said last week, which in turn resulted in sepsis, i.e. blood poisoning.

A corona infection or heart problems were ruled out as the cause of his symptoms in the hospital.

Clinton was in the intensive care unit for privacy and security reasons, not because he needed intensive care.

He felt tired on Tuesday and was then taken to the hospital after tests.

Spokesman Ureña had already stressed in the past few days that Clinton's condition continued to improve and that he had responded well to the antibiotic.

Clinton was already being treated more often for health problems: in 2004 he had four-fold bypass surgery on his heart, and in 2010 he had two stents inserted to open an artery.

The Democrat Clinton was US President from 1993 to 2001.

In 1998, impeachment proceedings were initiated against him for attempting to cover up his affair with intern Monica Lewinsky.

He is married to Hillary Clinton, who, as a Democratic candidate for the US presidential election in 2016, was defeated by Republican Donald Trump.

The news channel CNN showed how Clinton left the clinic arm in arm with his wife Hillary and raised his thumb.

In front of television cameras, he shook hands with several hospital workers.

Bill Clinton was in California, among other things, for an appointment with his Clinton Foundation, which is committed to civic participation and public health, among other things.

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