the resistance profile of tamiflu was always weaker than relenza - google the lancet and other publications over the past three yrs - thats why govt's are wanting to balance stockpile . all seasonal H1N1 is 100% resistant to tamiflu - non to relenza
ps there are 5 cases of tamiflu resistance to swine flu and a high probability of many more soon according to many of the worlds top virologists incl WHO