Does Tamiflu resistant swine flu virus really spread less well? Not so fast, says Revere

For a while that seemed to hold true. The biology seemed sound and all was very reassuring. Then, suddenly, in the 2007-2008 flu season the H1N1 seasonal influenza (not the swine flu H1N1) developed Tamiflu resistance and in a remarkably short time almost all of the H1N1 seasonal flu was resistant to Tamiflu.