Journal
BULLETIN OF THE WORLD HEALTH ORGANIZATION
Volume 89, Issue 7, Pages 532-538Publisher
WORLD HEALTH ORGANIZATION
DOI: 10.2471/BLT.11.086173
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- Hugh Hampton Young Memorial Fellowship committee at MIT
- UK National Institute for Health Research Health Technology
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There has been considerable controversy over the past year, particularly in Europe, over whether the World Health Organization (WHO) changed its definition of pandemic influenza in 2009. after novel H1N1 influenza was identified. Some have argued that not only was the definition changed, but that it was done to pave the way for declaring a pandemic. Others claim that the-definition was never changed and that this allegation is completely unfounded. Such polarized views have hampered our ability to draw important conclusions. This impasse, combined with concerns over potential conflicts of interest and doubts about the proportionality of the response to the H1N1 influenza outbreak, has undermined the public trust in health officials and our collective capacity to effectively respond to future disease threats. WHO did not change its definition of pandemic influenza for the simple reason that it has never formally defined pandemic influenza. While WHO has put forth many descriptions of pandemic influenza, it has never established a formal definition and the criteria for declaring a pandemic caused by the H1N1 virus derived from pandemic phase definitions, not from a definition of pandemic influenza. The fact that despite ten years of pandemic preparedness activities no formal definition of pandemic influenza has been formulated reveals important underlying assumptions about the nature of this infectious disease. In particular, the limitations of virus-centric approaches merit further attention and should inform ongoing efforts to learn lessons that will guide-the response to future outbreaks of novel infectious diseases.
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