adamantane adjuvant alum amantadine antigen antigenic shift arbidol avian influenza baculovirus biotechnology bird flu canada canine influenza cell culture cell penetrating peptide center for biologics evaluation and research chicken chickenpox chiron corporation clade cytokine storm digital object identifier epidemiology equine influenza flumist flu season fluzone fort riley fujian flu gene genetic drift genetics genome genomics glaxosmithkline hemagglutinin ifpma immune system immunogenicity influenza influenza genome sequencing project influenza pandemic influenza treatment influenza vaccine influenzavirus a influenzavirus b influenzavirus c international partnership on avian and pandemic influenza kansas measles medimmune medical device molecular virology morpholino mumps national influenza centers national institute of allergy and infectious diseases national institutes of health neuraminidase neuraminidase inhibitor new england journal of medicine original antigenic sin orthomyxoviridae oseltamivir pandemic pandemic preparedness and response act pandemic severity index pathogenesis peramivir probenecid rna reverse genetics rimantadine rubella sanofi-aventis smallpox spanish flu spanish flu research technology transition state united states vaccine world health organization zanamivir