Dame Sarah Gilbert News Today : Breaking News, Live Updates & Top Stories | Vimarsana

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 out at about 70 , so it has done that, and then some. So how does it stack up against other vaccines . There is a range. Flu tends to be about 40 60 effective. At the other end of the scale, chickenpox is about 98 effective for children. The important thing to remember is that this vaccine has been shown to be highly effective. Some people are asking, how can scientists be so confident in a vaccine theyve come up with in less than a year . A lot of it comes down to cash. Theres been a huge global

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