An intensive care unit nurse became the first person in New York state to receive the Pfizer/BioNTech Covid-19 vaccine on Dec. 14, marking a pivotal turn in the U.S. effort to control the deadly virus.

President Donald Trump returned to the White House after a three-night hospital stay for treatment for Covid–19, facing a staff hit by a wave of infections and a campaign further shadowed by the pandemic four weeks before Election Day.

President Donald Trump began a fourth day of treatment for Covid-19 at a military hospital outside Washington, with the severity of his illness unclear barely four weeks before Americans go to the polls to decide whether to reelect him.

President Donald Trump was treated with an experimental antibody cocktail for Covid-19 and moved to a military hospital as a precautionary measure, White House officials said.