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This curve here with the square shows you how many millions of vaccine doses were distributed across the U.S.
这个带方形的曲线图显示了,在美国数以百万计的,疫苗是如何使用的
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If you or I buy it, it costs $51 per dose, you need three doses to be effective.
如果你或者我购买它,每支将花费五十一美元,你需要购买三支才会起效
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Well, I think actually, you probably could tell a story where that was true, especially if we throw in enough doses of memory loss.
我想，实际上，这也许行得通，尤其是在引入失记的条件下。
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But so you needed enough doses, but this is real, and this is a lot of people, right?
你仍需要足够的剂量,这是事实,因为人数很多,对吧
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The problem is you've got to make hundreds of millions of doses sometimes in order to have an effect on progress of the disease.
问题是有时候你不得不去制造几亿支疫苗,以便在疾病进展时发挥作用
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As those doses were given you look at the prevalence of polio within the United States.
随着疫苗的使用,你可以看到全美小儿麻痹症
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So shortly after 9/11 the Government made a contract to a company called Acambis to make four hundred million doses of smallpox for $343 million dollars.
11后不久 政府与一个叫做,阿坎比斯的公司签订了合约,目的是用3.43亿美元,制造四亿支天花疫苗
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so this is hundreds of millions of doses that were given.
数据显示已有数亿支疫苗被注射
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Why do you need three doses of Hepatitis B?
为什么你需要三支重组乙肝疫苗呢
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So you need hundreds of millions of doses, at least, and you need a way to distribute that around the world, and you need a way to keep track of who got sick and who didn't after they got vaccinated.
至少需要上亿支的剂量,还得有办法将疫苗运送到世界各地,你还要一种方法进行跟踪,在接种疫苗之后谁得病了和谁没得病
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