The problem with antivirals

摘要

If the prospect of swine flu in its current form isn't worrisome, a drug-resistant strain emerging and going pandemic should be.rnAlthough the influenza A H1N1 strain now racing around the world is sensitive to two major flu antivirals, oseltamivir (Tamiflu) and zanamivir (Relenza), they put pressure on the virus to develop resistance. 'The problem is you use, you lose," says Scott Layne, an epidemiologist at the University of California, Los Angeles.