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Epidemiological Characteristics and spatiotemporal Distribution Patterns of Human Norovirus Outbreaks in China, 2012–2018

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Biomedical and Environmental Sciences 2023年第1期36卷 76-85页

作者： ZHAI Meng Ying RAN Lu WANG Jiao YE Dan YANG Wen Jing YAN Xu WANG Lin National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 100021China Division of Infectious Disease Key Laboratory of Surveillance and Early-warning on Infectious DiseaseChinese Center for Disease Control and PreventionBeijing 102206China School of Public Health Anhui Medical UniversityHefei 230032AnhuiChina

Objective To clarify the epidemiological characteristics and spatial distribution patterns of human norovirus outbreaks in China, identify high-risk areas, and provide guidance for epidemic prevention and *** This study analyzed 964 human norovirus outbreaks involving 50,548 cases in 26 provinces reported from 2012 to 2018. Epidemiological analysis and spatiotemporal scanning analysis were conducted to analyze the distribution of norovirus outbreaks in *** The outbreaks showed typical seasonality, with more outbreaks in winter and fewer in summer, and the total number of infected cases increased over time. Schools, especially middle schools and primary schools, are the most common settings of norovirus outbreaks, with the major transmission route being life contact. More outbreaks occurred in southeast coastal areas in China and showed significant spatial aggregation. The highly clustered areas of norovirus outbreaks have expanded northeast over *** By identifying the epidemiological characteristics and high-risk areas of norovirus outbreaks, this study provides important scientific support for the development of preventive and control measures for norovirus outbreaks, which is conducive to the administrative management of high-risk settings and reduction of disease burden in susceptible areas.

关键词： Norovirus outbreak Epidemiological characteristics spatiotemporal heterogeneity spatiotemporal aggregation

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