 On 12 April 2010 , Keiji Fukuda , the WHO 's top influenza expert , stated that the system leading to the declaration of a pandemic led to confusion about H1N1 circulating around the world , and he expressed concern that there was a failure to communicate in regard to uncertainties about the new virus , which turned out to be not as deadly as feared . WHO Director @-@ General Margaret Chan has appointed 29 flu experts from outside the organization to conduct a review of WHO 's handling of the H1N1 flu pandemic . She has told them , " We want a frank , critical , transparent , credible and independent review of our performance " . 
