(FILES) In this file photo taken on July 27, 2022, US President Joe Biden coughs while delivering remarks in the Rose Garden of the White House in Washington, DC. – Joe Biden has tested positive for Covid-19 for a second time and is returning to isolation, his White House doctor said on July 30, 2022, attributing the result to “rebound” positivity from treatment the US president received. (Photo by Brendan Smialowski / AFP)
