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A stem glycosylation site of hemagglutinin (HA) is important to the stability of the HA trimmer. A previous study shows that the stem 10/11 overlap glycosylation site of the H5 subtype avian influenza virus may influence the cleavage of HA, whereas the exact site and its effect on virulence remain unclear. In this study, site-directed mutagenesis was used to generate single or double mutant rSY-Δ10(10NNAT),...
Highly pathogenic avian influenza (HPAI) H5N8 virus has caused considerable economic losses to poultry industry and poses a great threat to public health. Our previous study revealed two genetically similar HPAI H5N8 viruses displaying completely different virulence in mice. However, the molecular basis for viral pathogenicity to mammals remains unknown. Herein, we generated a series of reassortants...
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