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Pfizer vaccine is effective but not the most practical …

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?

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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