Since the anthrax attacks in 2001, some $60 billion has been spent on biodefence in the United States. But the money has not bought quite what was hoped.
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Erika Check Hayden is a senior reporter for Nature in San Francisco, California.
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Check Hayden, E. Biodefence since 9/11: The price of protection. Nature 477, 150–152 (2011). https://doi.org/10.1038/477150a
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