Data reported from several studies have shown vaccine efficacy to be between 80% and 99% following single-dose vaccination and 98% or greater with 2 doses of the vaccine.
来自多项研究的数据表明，单剂接种的疫苗有效性为80% - 99%，2剂接种的有效性则达到98%以上。
Meeting the vaccine needs of all countries in a preservative-free single-dose format, as opposed to multi-dose presentations, would require a significant increase in manufacturers' filling capacity.
相对多剂量提供方式而言，要满足所有国家无防腐剂形式的单剂疫苗需求就要求制造商大幅提高灌装能力。
Current WHO estimates suggest that the vaccine storage requirements would at least double if only single-dose presentations were used (WHO vaccine volume calculator, March 2011).
目前，世卫组织估计表明，如果仅提供单剂疫苗，那么疫苗的存储需求将至少是现在的两倍(世卫组织疫苗量计算工具，2011年3月)。
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