How effective is the flu jab?URL: https://www.bbc.com/news/video_and_audio/must_see/46280108/reality-check-how-effective-is-the-flu-jabSource: Source – BBC News
Flu can make you feel rubbish, but for some people it can be deadly. There is a vaccine against it, but how effective is it at protecting us against the virus?
BBC reporter gives a brief overview of how the flu vaccine is devised and the decisions that have to be made a year in advance.
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