A simple skin test exists, but it is only sensitive enough to detect about half of all cases, says Krapf.
比如一种皮肤取样的检测方法，只能检出一半的病例。
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What is missing from the public health tool chest, says CSU professor Diego Krapf, who led the research, is a technique that can be used to widely detect TB in those places where it is most prevalent.