Those in the United States, who are facing the world’s worst outbreak, would receive the vaccine for free. The announcement came a day after the U.S. daily death toll surpassed 1, 000 for the first time.... President Trump has acknowledged that the outbreak will probably get worse, and for the first time urged Americans to wear masks. Details: Pfizer and BioNTech are developing a vaccine that uses genetic material from the virus, known as messenger RNA, to trigger the immune system.... The Sov