Hopes of Covid vaccine for more than 1bn people by end of 2021
Moderna becomes second firm to reveal positive results with nearly 95% protection in trials.
Vaccine trials 'encouraging' says WHO
Moderna becomes second firm to reveal positive results with nearly 95% protection in trials.
Vaccine trials 'encouraging' says WHO
Massachusetts-based company began Phase III of vaccine trial earlier Monday
The spike in U.S. cases have been fueled largely by Americans ignoring guidelines to keep their distance and wear masks, the government's top infectious disease official said. In a rare split with Trump, GOP leaders are now pushing for masks.