U.S. President Joe Biden's COVID-19 symptoms have improved since he started taking an antiviral drug, his physician Kevin O'Connor said Friday, a day after the 79-year-old tested positive for the novel coronavirus."President Biden completed his first full day of Paxlovid last night," O'Connor said in a memorandum, referring to the oral COVID-19 pill developed by Pfizer Inc. "His symptoms have improved," the doctor said.On whether the diagnosis will affect envisioned talks with Chinese President Xi Jinping, which Biden said on Wednesday would occur within 10 days, White House Press Secretary…READ FULL ARTICLE