Tolong jelaskan mengenai Sejarah dari Influenza

Epidemiology of WHO-confirmed human cases of avian influenza A(H5N1) infection

WHO (PDF) contains latest Evolutionary "Tree of Life" for H5N1 article Antigenic and genetic characteristics of H5N1 viruses and candidate H5N1 vaccine viruses developed for potential use as pre-pandemic vaccines published 18 August 2006

WHO's assessment of Flu Research  as of November 2006.