2013年1月25日 星期五

BBC News - Home: Swine flu infected 'fifth of people'

BBC News - Home
The latest stories from the Home section of the BBC News web site.
thumbnail Swine flu infected 'fifth of people'
Jan 25th 2013, 13:44

A least one in five people were infected with swine flu during the first year of the pandemic in 2009, according to data from 19 countries.

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