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By Leta Hong Fincher
13 January 2009
U.S. health experts say this year's most common flu strain is resistant to the most commonly used antiviral drug.
|Patients suffering from influenza have been regularly treated with Tamiflu, the leading drug for flu. But the Centers for Disease Control is warning that the drug is ineffective against most cases of flu this season|
Doctors are concerned that the drug-resistant flu could cause more hospitalizations and deaths than usual.