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...highly [[pathogenic]] varieties of the Z genotype of avian flu virus H5N1 and ancestral strains.</ref><ref>[http://vir.sgmjournals.org/cgi/content/full/8 ...birds and humans; with more of its genes from birds than less deadly later pandemic strains.

...the development and purchase of the necessary vaccines, drugs, therapies, and diagnostic tools for public health medical emergencies. ...elopment and procurement of medical countermeasures for pandemic influenza and other emerging infectious diseases.