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The first major outbreak of HPAI H5N1 virus in wild waterbirds took place in Qinghai Lake, western China, May 2005. During fall/winter of 2005 and spring 2006, H5N1 virus spread rapidly over Asia, Europe, and Africa. One hypothesis for the global patterns and dynamics of the spread of H5N1 virus is that seasonally migratory wild waterbirds may carry the virus and spread it along migratory flyways...
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