President Joe Biden is in isolation with COVID-19. He's responding well to his treatment, according to the White House. RELATED: President Biden reassures American people after COVID-19 diagnosis https://bit.ly/3zpgBFk President Joe Biden's symptoms have improved after his first day of treatment for COVID-19, according to a summary from his doctor released by the White House Friday. "The president is tolerating treatment well," Dr. Kevin O'Connor wrote in a memo. Biden coughed and apologized for his raspy voice at a Friday afternoon video meeting his economic and energy advisors that was briefly broadcast by the White House. “I’m feeling much better than I sound,” Biden said,. He flashed a thumbs up when reporters asked how he's doing. Biden is working at least eight hours a day, according to White House press secretary Karine Jean-Pierre. He's eating well and joked that his one regret is his appetite hasn't changed, said COVID Response Coordinator Dr. Ashish Jha, who spoke with Biden by video. "He ate his breakfast and lunch, fully. He actually showed me his plate," Jha said. » Subscribe to USA TODAY: http://bit.ly/1xa3XAh » Watch more on this and other topics from USA TODAY: https://bit.ly/3z17dX7 » USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR. #covid19 #joebiden #whitehouse