Organisms could be genetically manipulated to defeat vaccines, mild diseases could be turned into deadly ones and lethal viruses and bacteria might be created from scratch.

生物体可以通过基因修饰而抵抗疫苗，这样轻微的疾病就能演变成致死性疾病，皮肤划痕就能产生致命病毒和细菌。

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Deborah Derrick: The mobilization to defeat these diseases in the past decade has been stunningly successful.

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If we were to defeat these diseases in the way we defeated polio, tuberculosis, and ulcers, Medicare costs would decline by a lot.

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