Published in TB and Outbreaks Week, November 22nd, 2005
"An outbreak of highly pathogenic avian influenza A (H5N1) has recently spread to poultry in nine Asian countries. H5N1 infections have caused {{>=}}52 human deaths in Vietnam, Thailand, and Cambodia from January 2004 to April 2005. Genomic analyses of H5N1 isolates from birds and humans showed two distinct clades with a nonoverlapping geographic distribution. All the viral genes were of avian influenza origin, which indicates absence of reassortment with human influenza viruses," investigators in the United States report.
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