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US flu vaccine trials are waste of time

机译：美国流感疫苗试验浪费时间

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摘要

The first human trials of a vaccine against H5N1 bird flu are likely to be a waste of time and money. The formulations that the US plans to test are thought likely to be ineffective - and even if they do work it will take far too long to manufacture enough doses to prevent a pandemic strain wreaking havoc. Other countries are following more promising approaches, but they are not ready to start trials. Fears that the H5N1 virus might mutate into a form capable of triggering a human pandemic have persuaded several countries to change strategy. Instead of waiting for a pandemic strain to emerge, health authorities are creating human vaccines against the current strain. Although these vaccines might not be perfect, the hope is that they will make the difference between life and death.
机译：针对H5N1禽流感的疫苗的首次人体试验可能浪费时间和金钱。美国计划测试的制剂可能被认为是无效的-即使它们确实起作用，制造足够的剂量来预防大流行毒株也不会造成严重破坏，这将花费太长时间。其他国家正在采用更具前景的方法，但它们还没有准备好开始试验。担心H5N1病毒可能会变异为可引发人类大流行的形式，这已经说服了几个国家改变策略。卫生当局没有等待大流行毒株的出现，而是在制造针对当前毒株的人类疫苗。尽管这些疫苗可能并不完美，但希望它们能在生与死之间发挥作用。

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