"Since the release of the National Strategy for Pandemic Influenza Implementation Plan one year ago, much has been accomplished to realize the U.S. Government's pandemic preparedness and response goals of: (1) stopping, slowing, or otherwise limiting the spread of a pandemic to the United States; (2) limiting the domestic spread of a pandemic and mitigating disease, suffering, and death; and (3) sustaining infrastructure and mitigating impact to the economy and the functioning of society. Although the visibility of avian influenza and pandemic preparedness has waned in the media, the threat of avian influenza and the potential for an influenza pandemic has not. A pandemic occurs when a novel strain of influenza virus emerges that has the ability to infect humans and to cause severe disease, and where efficient and sustained transmission between humans occurs. Though we cannot be certain that highly pathogenic avian influenza A H5N1 (H5N1) will spark a pandemic, we can be sure that a pandemic will occur at some point in the future. It is everyone's responsibility to remain vigilant. We cannot become complacent and must continue to take the threat of a pandemic very seriously."
White House, Homeland Security: http://www.whitehouse.gov/infocus/homeland/index.html