Once the first doses of pandemic influenza a (H1N1) vaccine become available, national health authorities will decide how to implement national vaccination campaigns.
一旦第一剂大流行甲型流感(H1N1)疫苗到位，国家卫生机构就要决定怎样去实施国家疫苗接种活动。
Once the first doses of pandemic influenza a (H1N1) vaccine become available, national health authorities will decide how to implement national vaccination campaigns.
一旦第一剂大流行甲型流感(H1N1)疫苗到位，国家卫生机构就要决定怎样去实施国家疫苗接种活动。
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