H1N1 Virus Becoming Resistant to Tamiflu

A new strain of the swine flu that is resistant to the antiviral drug Tamiflu has been found in Denmark, Hong Kong, Japan, and now, here in the U.S.

Most troublesome, the patient in Hong Kong had not previously been treated with Tamiflu, meaning that the strain had already evolved to be resistant and then was transmitted to him. Thankfully the reports indicate that the resistant strain does still respond to treatment with Relenza.