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S⁠⁠en. John Fetterman has been hospitalized overnight following lightheadedness he experienced at a Senate retreat Wednesday.

"Towards the end of the Senate Democratic retreat today, Senator John Fetterman began feeling lightheaded," a statement from his office read.

The office said Fetterman, D-Pa., was in "good spirits and talking with his staff and family." 

The hospitalization does not appear to be related to his previous stroke, the statement added.

John Fetterman attends a swearing ceremony

Sen. John Fetterman in the old Senate chamber for the ceremonial swearing in Jan. 3, 2023, in Washington, D.C. (Tasos Katopodis/Getty Images)

"He left and called his staff, who picked him up and drove him to The George Washington University Hospital. Initial tests did not show evidence of a new stroke, but doctors are running more tests and John is remaining overnight for observation," it continued.

"We will provide more information when we have it," it concluded.

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Fetterman, 53, suffered a stroke in 2022, during his senatorial campaign against Republican challenger Dr. Mehmet Oz. 

Fetterman pointing

Sen. John Fetterman has been hospitalized overnight, his office said. (Jeff Swensen/Getty Images)

Fetterman waving

Sen. John Fetterman's current hospitalization does not appear to be stroke-related, per initial tests. (Angela Weiss/AFP via Getty Images)

Dr. Oz speaking

Senate candidate Mehmet Oz speaks at an event with Nikki Haley on Oct. 26, 2022, in Harrisburg, Pennsylvania. (Mark Makela/Getty Images)

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Oz made the Democrat's health a major focus of the campaign, though Fetterman won the contest with 50.5% of the vote. He received 2.64 million votes to Oz's 2.46 million.

Fetterman was sworn into office on Jan. 3.