So it really gave a broad coverage against a range of seasonal viruses that wouldn't be covered by the traditional flu vaccine."
VOA: standard.2010.07.21
I didn't have the flu at the time but I became violently ill.
我那会并没得流感,但却病的很重。
Mutations in the virus mean that last year's vaccine probably won't protect against this year's flu variety.
VOA: standard.2010.07.21
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