Volume 29, Number 9—September 2023
Dispatch
Emergence of GII.4 Sydney[P16]-like Norovirus-Associated Gastroenteritis, China, 2020–2022
Figure 2
![Phylogenetic analysis of newly identified GII.4 Sydney[P16] noroviruses in Shanghai, China, 2020–2022. Maximum-likelihood phylogenetic trees show complete genome (A) RNA-dependent RNA polymerase (RdRp) (B) and VP1 (C) gene sequences for newly identified GII.4 Sydney[P16] strains (n = 23) in Shanghai. Pink shading indicates new sublineage (tentatively named SHGII.4-2020) in GII.4 Sydney[P16] cluster. Branches of each strain in SHGII.4-2020 are indicated by color according to identified positions; red indicates GII.4 Sydney[P16] strains identified in this study, except SH18-36. Numbers on ancestral nodes represent node support values.](/eid/images/23-0383-F2.jpg "Figure 2. Phylogenetic analysis of newly identified GII.4 Sydney[P16] noroviruses in Shanghai, China, 2020–2022. Maximum-likelihood phylogenetic trees show complete genome (A) RNA-dependent RNA polymerase (RdRp) (B) and VP1 (C) gene sequences for newly identified GII.4 Sydney[P16] strains (n = 23) in Shanghai. Pink shading indicates new sublineage (tentatively named SHGII.4-2020) in GII.4 Sydney[P16] cluster. Branches of each strain in SHGII.4-2020 are indicated by color according to identified positions; red indicates GII.4 Sydney[P16] strains identified in this study, except SH18-36. Numbers on ancestral nodes represent node support values.")
Figure 2. Phylogenetic analysis of newly identified GII.4 Sydney[P16] noroviruses in Shanghai, China, 2020–2022. Maximum-likelihood phylogenetic trees show complete genome (A) RNA-dependent RNA polymerase (RdRp) (B) and VP1 (C) gene sequences for newly identified GII.4 Sydney[P16] strains (n = 23) in Shanghai. Pink shading indicates new sublineage (tentatively named SHGII.4-2020) in GII.4 Sydney[P16] cluster. Branches of each strain in SHGII.4-2020 are indicated by color according to identified positions; red indicates GII.4 Sydney[P16] strains identified in this study, except SH18-36. Numbers on ancestral nodes represent node support values.
1These authors contributed equally to this article.
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Page updated: August 20, 2023
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