BBCNEWS The Papers November 23, 2020 22:30:00
Effective in preventing symptoms of covid 19. As we heard earlier, there are questions about the speed at which scientists been able to produce a vaccine, and further questions about the timetable for vaccinating millions of people. Heres our health correspondent, catherine burns. Theres no such thing as a vaccine that is 100 effective for every single person. Researchers trying to find a vaccine for coronavirus were set a target, to make it at least 50 effective. This oxford vaccine averages ou...
Source: archive.org