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Volume 29, Number 9—September 2023
Dispatch

Emergence of GII.4 Sydney[P16]-like Norovirus-Associated Gastroenteritis, China, 2020–2022

Yuanyun Ao1Comments to Author , Lijuan Lu1, and Jin XuComments to Author 
Author affiliations: Children's Hospital of Fudan University, Shanghai, China (Y. Ao, L. Lu, J. Xu); Shanghai Institute of Infectious Disease and Biosecurity of Fudan University, Shanghai, China (J. Xu).

Main Article

Figure 1

Emergence of recombinant GII.4 Sydney[P16] norovirus associated with acute gastroenteritis among children treated as outpatients in Shanghai, before and during COVID-19 pandemic, Shanghai, China, during January 2016–March 2022. A) Numbers of cases of norovirus-associated acute gastroenteritis. Red arrow indicates an abrupt increase in norovirus activity. B) Genotype (polymerase-capsid) distribution of norovirus. Different norovirus genotypes are indicated by color (key). Start date of COVID-19 pandemic declared by World Health Organization was March 11, 2020; absent labels indicate period (September–December 2019) during which fecal sample collection was paused.

Figure 1. Emergence of recombinant GII.4 Sydney[P16] norovirus associated with acute gastroenteritis among children treated as outpatients in Shanghai, before and during COVID-19 pandemic, Shanghai, China, during January 2016–March 2022. A) Numbers of cases of norovirus-associated acute gastroenteritis. Red arrow indicates an abrupt increase in norovirus activity. B) Genotype (polymerase-capsid) distribution of norovirus. Different norovirus genotypes are indicated by color (key). Start date of COVID-19 pandemic declared by World Health Organization was March 11, 2020; absent labels indicate period (September–December 2019) during which fecal sample collection was paused.

Main Article

1These authors contributed equally to this article.

Page created: June 29, 2023
Page updated: August 20, 2023
Page reviewed: August 20, 2023
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