Biden completes fourth dose of PAXLOVID, COVID-19 symptoms have "improved meaningfully": US President's physician

US President Joe Biden, who tested positive for COVID-19 early this week, has finished his fourth dose of PAXLOVID, his physician reported on Friday. Biden is still experiencing primary symptoms such as a loose, non-productive cough and hoarseness. However, his symptoms have "improved meaningfully" since Thursday, according to his doctor, Kevin C. O'Connor.