avian influenza virus subtype, h5n1, h9n2, h5n8, h5n6, h7n3 in poultry

presentation poster design avian influenza virus subtype h5n1 h9n2 h5n8 h5n6 h7n3 poultry genetic characterization highly pathogeni pathogenic viruses update global aiv zoonotic potential situation viruses genes rna mutation 3d model viruses neuraminidase haemagglutinin ha bird flu sick mortality symptoms outbreaks report update 2023 2022