To date, tests of isolates from eight farms in Canada have yielded a rare neuraminidase (NA) protein mutation known as H275Y that has shown resistance to oseltamivir, according to a new research ...

Are antivirals reaching rivers in sufficient quantities to bring about resistance? Japan is one of the top consumers of oseltamivir, which is why it has such high levels of the drug in its river ...

According to a report in the New England Journal of Medicine, H5N1 is evolving to confer resistance against oseltamivir: We report the isolation from two Vietnamese patients of influenza A (H5N1 ...

Stockpiling large amounts of oseltamivir (Tamiflu ... However, it is known that influenza viruses can develop resistance to these drugs. New research by Marc Lipsitch and colleagues (Harvard ...

Resistance to a popular anti-influenza drug ... Japanese researchers said on Thursday. Tamiflu, or oseltamivir, belongs to a class of drugs known as a neuraminidase inhibitors which work by ...

"As of February 19, 2009, resistance to oseltamivir had been identified among 264 of 268 (98.5 percent) U.S. influenza A(H1N1) viruses tested," the researchers wrote in the Journal of the American ...