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highly (h5n1) and low (h7n2) pathogenic avian influenza virus infection in falcons via nasochoanal route and ingestion of experimentally infected experimental infection with highly pathogenic avian influenza (hpai) and low pathogenic avian influenza (lpai) viruses was carried out on falcons in order to examine the effects of these viruses in terms of pathogenesis, viral distribution in tissues and viral shedding. the distribution pattern of influenza virus receptors was also assessed. captive-reared gyr-saker (falco rusticolus x falco cherrug) hybrid falcons were challenged with a hpai h5n1 virus (a/great crested grebe/basque country/0 ...201222427819
isolation of highly pathogenic avian influenza h5n1 virus from saker falcons (falco cherrug) in the middle east.there is accumulating evidence that birds of prey are susceptible to fatal infection with highly pathogenic avian influenza (hpai) virus. we studied the antigenic, molecular, phylogenetic, and pathogenic properties of 2 hpai h5n1 viruses isolated from dead falcons in saudi arabia and kuwait in 2005 and 2007, respectively. phylogenetic and antigenic analyses grouped both isolates in clade 2.2 (qinghai-like viruses). however, the viruses appeared to have spread westward via different flyways. it r ...200920148178
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