Categories Articles Oxford scientists working on a coronavirus vaccine say there is now only a 50% chance of success because the number of UK cases is falling too quickly Post author By crystalg Post date May 24, 2020 Business Insider Feedburner Tags Because, Cases, Chance, coronavirus, Falling, Number, Only, Oxford, quickly, Scientists, Success, There, Vaccine, working ← 10 Skills to Master Before Launching a New Business → President Trump Will Attend First NASA Astronaut Launch in More Than a Decade