LYCOS RETRIEVER 
Tamiflu
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Some current influenza viruses are carrying a mutation—A/H1N1-H274Y—that makes them resistant to Tamiflu. The Centers for Disease Control and Prevention (CDC) estimate that a small sampling of flu viruses nationwide carry the mutation. The Tamiflu resistant mutation has occurred in A/H1N1, one of the main circulating strains causing flu this year.
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