WASHINGTON (AP) — Former President Bill Clinton was admitted to a Southern California hospital with an infection but is "on the mend," his spokesman said.

Clinton, 75, was admitted to the University of California Irvine Medical Center on Tuesday evening for a non-COVID-19-related infection, Angel Ureña said Thursday in a statement.

"He is on the mend, in good spirits and is incredibly thankful to the doctors, nurses, and staff providing him with excellent care," Ureña said.

A second statement from Clinton's spokesman quoted physicians Dr. Alpesh Amin and Dr. Lisa Bardack, who said the former president has been "administered IV antibiotics and fluids."

"After two days of treatment, his white blood cell count is trending down and he is responding to antibiotics well," the doctors said. "The California-based medical team has been in constant communication with the President's New York-based medical team, including his cardiologist. We hope to have him go home soon."

In the years since Clinton left the White House in 2001, the former president has faced health scares. In 2004, he underwent quadruple bypass surgery after experiencing prolonged chest pains and shortness of breath. He returned to the hospital for surgery for a partially collapsed lung in 2005, and in 2010 he had a pair of stents implanted in a coronary artery.

He responded by embracing a largely vegan diet that saw him lose weight and report improved health.

He repeatedly returned to the stump, campaigning for Democratic candidates, mostly notably his wife, Hillary, during her failed 2008 bid for the presidential nomination. And in 2016, as Hillary Clinton sought the White House as the Democratic nominee, Bill Clinton — by then a grandfather and nearing 70 — returned to the campaign trail.

A spokesman for the Clinton Foundation said the former president was in the Los Angeles area for private events related to his charitable organization. The UCI Medical Center is in Orange County, about 40 miles (64 km) southeast of Los Angeles.

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Associated Press writer Robert Jablon in Los Angeles contributed to this report.