Good news from the vaccine front: The Pfizer vaccine seems to work well and offers up to 90% protection, the company reports. Although that announcement immediately raises new questions: can we get that vaccine? And will there also be vaccines in circulation that work less well?
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How far is the rest?
There are as many as 170 teams in the world developing a vaccine. At the moment there are a number of front runners who think they will be ready by the end of this year …
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