'Rational drug design' identifies fragments of FDA-approved drugs relevant to emerging viruses

A massive, data-crunching computer search program that matches fragments of potential drug molecules to the known shapes of viral surface proteins has identified several FDA-approved drugs that could be the basis for new medicines -- if emerging viruses such as the H5N1 (avian flu) or H1N1/09 (swine flu) develop resistance to current antiviral therapies.

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