Former New Jersey Gov. Chris Christie announced Saturday that he tested positive for COVID-19, the latest Trump administration insider to come down with the virus.

"I just received word that I am positive for COVID-19," he tweeted Saturday. "I want to thank all of my friends and colleagues who have reached out to ask how I was feeling in the last day or two. I will be receiving medical attention today and will keep the necessary folks apprised of my condition."

Christie played the role of Joe Biden in debate preparation for the president before last Tuesday's televised showdown between President Donald Trump and his Democratic challenger in Cleveland.

The president and first lady Melania Trump both announced positive diagnoses early Friday, while top White House aide Hope Hicks was diagnosed with the virus on Thursday.

There are a number of cases possibly linked to last weekend's Rose Garden announcement of Supreme Court nominee Judge Amy Coney Barrett: Former White House counselor Kellyanne Conway, the president of the University of Notre Dame, and at least two Republican lawmakers -- Sen. Mike Lee, R-Utah, and Sen. Thom Tillis, R-N.C.

Attendees at the outdoor event sat closely together, with few masks in evidence, and some were invited to a smaller event inside the White House.

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