Common Flu Strain Resistant to Popular Antiviral Drug

The most common strain of flu this season is resistant to the popular antiviral drug Tamiflu, but government health officials said Thursday there is no reason to panic.

The fact that the flu season so far has been slow, and that other drugs work well against this particular flu virus, has health officials adopting a watchful attitude for now.

While the cause of the mutation that made the virus resistant to Tamiflu (oseltamivir) isn’t known, experts suspect it was caused by the wide use of Tamiflu in other countries to treat upper respiratory infections.

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