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Superbug, super-fast evolution - April 2008

Methicillin resistant Staphylococcus aureus, or MRSA, is an increasingly common medical problem.  MRSA is a strain of Staphylococcus aureus has evolved multiple drug resistance.  Infections caused by normal S. aureus are fairly easy to treat with antibiotics, but an infection casused by MRSA is very difficult to treat and can be life threatening. Dr. Christina Burch, Associate Professor of Biology at the Univeristy of North Carolina at Chapel Hill, talks about the evolution of drug resistance in commensal bacteria like S. aureus.  (10 minutes)

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