The complete sequence of the 1918 virus, demonstrating its avian origin, and focusing on those mutations that differentiate avian from human strains will be immensely helpful as we try to understand the factors that govern the epidemic behavior of the current crop of avian H5 viruses.  -   John Treanor     Quotes
The complete sequence of the 1918 virus, demonstrating its avian origin, and focusing on those mutations that differentiate avian from human strains will be immensely helpful as we try to understand the factors that govern the epidemic behavior of the current crop of avian H5 viruses. John Treanor