The flu vaccine shortage isn't just a public health issue anymore, it's also a political issue. John Kerry has been trying to pin the shortage on incompetence on the part of the Bush administration. He tells National Public Radio it's a "serious demonstration of the failure of leadership." Meanwhile, President Bush is trying to reassure voters that millions of vaccine doses are on hand for the "most vulnerable Americans." He tells Florida voters millions more will be shipped "in the coming weeks." Health and Human Services Secretary Tommy Thompson tells CNN Kerry hasn't done anything in 20 years to fix the problem, and has even "exacerbated it." Doctor Anthony Fauci the National Institutes of Health says the decades-long "fragility of the vaccine enterprise" is to blame. He says "it's been an accident waiting to happen."