Fig. 2: Virus subtype proportions and host species distributions of the pure isolates with a single HxNy subtype.
From: Dominant subtype switch in avian influenza viruses during 2016–2019 in China
a The proportion of various HA subtypes of pure isolates with a single HxNy subtype isolated between 2016 and 2019. The major prevalent subtypes include H5, H6, H7, and H9. H5 viruses include H5N6 and H5N8; H6 viruses include H6N2, H6N6, and H6N8; H7 viruses include H7N2, H7N3, H7N6, H7N7, and H7N9; H9 viruses include H9N2, H9N6, and H9N9. b Host species distributions of H5N6, H6N6, H7N3, H7N9, H9N2, and other subtypes. Source data are provided as a Source Data file.
