US President Joe Biden said on Wednesday he was “feeling great” after leaving his Covid-19 isolation five days after testing positive. Biden tested positive last Thursday. He went into isolation and was given a course of Paxlovid, a coronavirus treatment medication. White House physician Kevin O’Connor said in a letter that the 79-year-old president tested negative on Tuesday night and again on Wednesday morning. “His symptoms have been steadily improving, and are almost completely resolved,” O’Connor wrote. “My symptoms were mild, my recovery was quick and I’m feeling great,” Biden said a sho…