Intended for healthcare professionals

Letters WHO and pandemic flu

There was also no new subtype

BMJ 2010; 340 doi: (Published 29 June 2010) Cite this as: BMJ 2010;340:c3460
  1. Ron Law, risk and policy adviser1
  1. 1Auckland, New Zealand
  1. juderon{at}

    Cohen and Carter state that the World Health Organization changed the definition of an influenza pandemic by excluding reference to the words “with enormous numbers of deaths and illness.”1 However, the WHO also dropped the requirement for a new subtype, meaning that many seasonal flu viruses could be classified as pandemic influenza. A …

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