Are there cases of H1N1 virus being resistant to drugs (antiviral resistance)?
According to the Centers for Disease Control & Prevention (CDC), there have been reports of the virus being resistant to the antiviral drug Tamiflu (Oseltamivir). Despite a few reports of resistance, these antivirals are still effective and the H1N1 virus remains susceptible to Tamiflu and Relenza (Zanamivir) with rare exception.