
Comparative analysis of hemagglutinin of 2009 H1N1 influenza A pandemic indicates its evolution to 1918 H1N1 pandemic
Keywords: WHO, World Health Organization; HA, Hemagglutinin; NP, Nucleoprotein; NS, Nonstructural; NA, Neuraminidase; EXPASY, Expert Protein Analysis SystemH1N1; Phylogenetic analysis; Pandemic; Glycosylation; Antigenic sites