The yellow fever vaccine takes a long time to produce – around 12 months – and it is difficult to forecast in advance the quantities that will be needed each year to respond to outbreaks.
The ICG originally planned to stock 2 million doses per year, but, with increasing demands the emergency stockpile was increased to 6 million doses per year in 2003, thanks to financial support from Gavi Alliance.
10033
今年为应对安哥拉的疫情已经两次将全球600万剂黄热病疫苗储备用尽。
The response to the Angola outbreak has depleted the global stockpile of 6 million yellow fever vaccine doses twice this year already.
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这种情况以前从未发生过。
This has neverhappened before.
10035
过去,国际协调小组为控制一国疫情所用的疫苗数量不曾超过400万剂。
In the past the ICG has never used more than 4 million doses to control an outbreak in 1 country.
In the face of increasing demands this year, the 4 major manufacturers who supply the global stockpile of the yellow fever vaccine have been working around the clock to replenish the stockpile.