Biden marks ‘tragic milestone’ of 1 million U.S. lives lost to COVID

White House Press Secretary Karine Jean-Pierre said that Biden was experiencing “mild symptoms" and has begun taking Paxlovid.

Psaki tweeted that she took a test in preparation for Wednesday’s trip and it came back positive.

Experts say the plan to distribute 1 billion tests is a good first step, but it must become a regular part of the pandemic response.