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A Large Acute Gastroenteritis Outbreak Associated with Both Campylobacter coli and Human Sapovirus—Beijing Municipality,China,2021
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作者 Lin Zou Ying Li +17 位作者 Guilan Zhou Zhenzhou Huang Changyan Ju Chunyan Zhao Xiang Gao Bojun Zhen Ping Zhang xiaochen guo Jing Zhang Yang Zhang Bo Liu Shaolei Zhou Aixia Yan Ying Kang Yanchun Wang Hongmei Ma Xiaohui Li Maojun Zhang 《China CDC weekly》 SCIE CSCD 2023年第52期1167-1173,共7页
What is already known about this topic?Campylobacter is a significant foodborne pathogen that leads to global outbreaks of acute gastroenteritis(AGE)usually affecting less than 30 individuals.Human sapovirus(HuSaV)is ... What is already known about this topic?Campylobacter is a significant foodborne pathogen that leads to global outbreaks of acute gastroenteritis(AGE)usually affecting less than 30 individuals.Human sapovirus(HuSaV)is an enteric virus responsible for sporadic cases and outbreaks of AGE worldwide.In a study conducted in Beijing,HuSaV detection ranked second after norovirus.What is added by this report?We present a discussion of the first large-scale outbreak of AGE caused by both Campylobacter coli(C.coli)and HuSaV.The outbreak involved a total of 996 patients and exhibited two distinct peaks over a period of 17 days.Through case-control studies,we identified exposure to raw water from a secondary water supply system as a significant risk factor.Among 83 patients,49 samples tested positive for C.coli,39 samples tested positive for HuSaV,and 27 samples tested positive for both pathogens using real-time polymerase chain reaction detection.Furthermore,whole-genome sequencing of 17 C.coli isolates obtained from 17 patients revealed that all isolates belonged to a highly clonal strain of C.coli.What are the implications for public health practice?Outbreaks of AGE resulting from multiple pathogen infections warrant increased attention.This report emphasizes the significance of ensuring the safety of drinking water,particularly in secondary supply systems. 展开更多
关键词 CAMPYLOBACTER HUMAN ENTERITIS
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基于eDNA metabarcoding探究北京市主要河流鱼类分布及影响因素 被引量:2
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作者 沈梅 郭宁宁 +3 位作者 罗遵兰 郭晓晨 孙光 肖能文 《生物多样性》 CAS CSCD 北大核心 2022年第7期130-141,共12页
使用eDNA宏条形码(eDNAmetabarcoding)和地笼法检测了北京市3条水系在夏季和秋季两个季节的鱼类多样性,旨在研究北京市鱼类群落的空间格局特征,探索适用于北京鱼类生物多样性监测及保护的新方法。结果表明:在北京市的34个采样点中,利用e... 使用eDNA宏条形码(eDNAmetabarcoding)和地笼法检测了北京市3条水系在夏季和秋季两个季节的鱼类多样性,旨在研究北京市鱼类群落的空间格局特征,探索适用于北京鱼类生物多样性监测及保护的新方法。结果表明:在北京市的34个采样点中,利用e DNAmetabarcoding共检测出鱼类55种,显著高于传统方法所捕获的鱼类种数(35种),鱼类组成以鲤形目和鲈形目为主。山区河流清水鱼的多样性要显著高于城区河流,城区河流(北运河水系)群落结构较为单一,以鲫(Carassius auratus)、麦穗鱼(Pseudorasbora parva)、泥鳅(Misgurnus anguillicaudatus)等耐污种为优势种;山区河流(潮白河水系及大清河水系)以宽鳍鱲(Zacco platypus)、拉氏鱥(Rhynchocypris lagowskii)、马口鱼(Opsariichthys uncirostris)等为优势种。不同季节影响清水鱼群落结构的环境因子不同,夏季主要是总溶解固体和电导率,秋季主要是海拔和温度。清水鱼丰富度与环境因子及人类活动的相关性表明,清水鱼的丰富度随着总溶解固体及灯光指数增加而显著降低,且均与海拔、温度等存在显著相关性。本研究证明了eDNA metabarcoding方法用于监测北京市鱼类多样性及其时空分布的可行性。 展开更多
关键词 eDNA宏条形码 鱼类群落 清水鱼 生物多样性 河流
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