Washington (AFP) – US President Joe Biden’s Covid symptoms “continue to improve” and he is tolerating treatment well, his White House physician said Saturday, two days after the 79-year-old tested positive for the virus. Biden, who is isolating at the White House, completed a second full day of Paxlovid on Friday night, his doctor Kevin O’Connor wrote in a memorandum to the White House press secretary. The US leader continues to experience a sore throat, runny nose, cough and body aches, but they are “less troublesome,” O’Connor said. And his pulse, blood pressure, respiratory rate and tempera…