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Mutations and intron polymorphisms in voltage-gated sodium channel genes of different geographic populations of Culex pipiens pallens/ Culex pipiens quinquefasciatus in China

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贫困所致传染病(英文) 2024年第2期13卷 6-16页

作者： Li Wenyu Ma Delong Mu Qunzheng Zhou Xinxin Hua Dongdong Zhao Chunchun liu qiyong Wang Jun Meng Fengxia State Key Laboratory of Infectious Disease Prevention and Control Department of Vector Biology and Control National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention WHO Collaborating Centre for Vector Surveillance and Management Beijing People’s Republic of China Ningxia Center for Disease Prevention and Control YinChuan NingXia People’s Republic of China Jinan Shizhong Center for Disease Control and Prevention Jinan Shandong China Vanke School of Public Health Tsinghua University Beijing People’s Republic of China Weifang No. People’s Hospital Weifang Shandong People’s Republic of China Beijing Daxing Center for Disease Control and Prevention Beijing People’s Republic of China Jinan Second Maternal and Child Health Hospital Jinan Shandong China

Background Culex pipiens pallens andCulex pipiens quinquefasciatus are the dominant species ofCulex mosquitoes in China and important disease vectors. Long-term use of insecticides can cause mutations in the voltage-gated sodium channel (vgsc) gene of mosquitoes, but little is known about the current status and evolutionary origins ofvgsc gene in different geographic populations. Therefore, this study aimed to determine the current status ofvgsc genes inCx. p. pallens andCx. p. quinquefasciatus in China and to investigate the evolutionary inheritance of neighboring downstream introns of thevgsc gene to determine the impact of insecticides on long-term *** Sampling was conducted from July to September 2021 in representative habitats of 22 provincial-level administrative divisions in China. Genomic DNA was extracted from 1308 mosquitoes, the IIS6 fragment of thevgsc gene on the nerve cell membrane was amplified using polymerase chain reaction, and the sequence was used to evaluate allele frequency and knockdown resistance (kdr) frequency. MEGA 11 was used to construct neighborjoining (NJ) tree. PopART was used to build a TCS *** There were 6 alleles and 6 genotypes at the L1014 locus, which included the wild-type alleles TTA/L and CTA/L and the mutant alleles TTT/F, TTC/F, TCT/S and TCA/S. The geographic populations with akdr frequency less than 20.00% were mainly concentrated in the regions north of 38° N, and the geographic populations with akdr frequency greater than 80.00% were concentrated in the regions south of 30° *** frequency increased with decreasing latitude. And within the same latitude, the frequency ofkdr in large cities is relatively high. Mutations were correlated with the number of introns. The mutant allele TCA/S has only one intron, the mutant allele TTT/F has three introns, and the wild-type allele TTA/L has 17 *** Cx. p. pallens andCx. p. quinquefasciatus have developed resistance to insecticides in mos

关键词： Culex pipiens pallens Culex pipiens quinquefasciatus vgsc gene Mutation Frequency Intron Haplotype China

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Laboratory and Semi-Field Evaluation on S-Methoprene Formulations Against Anopheles sinensis(Diptera:Culicidae)—Yuxi City,Yunnan Province,China

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China CDC weekly 2024年第6期6卷 105-108页

作者： Wenbo Hu Yijin Chen Ying Liang Tianyun Su qiyong liu Xuewen Li Xiaobo liu School of Public Health Cheeloo College of MedicineShandong UniversityJinan CityShandong ProvinceChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases WHO Collaborating Centre for Vector Surveillance and ManagementDepartment of Vector Biology and ControlNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina EcoZone International Riverside CityCAUSA Department of Environment and Health School of Public HealthCheeloo College of MedicineShandong UniversityJinan CityShandong ProvinceChina Department of Vector Control School of Public HealthShandong UniversityJi’nan CityShandong ProvinceChina Xinjiang Key Laboratory of Vector-borne Infectious Diseases Urumqi CityXinjiang830002

Summary What is already known about this topic?Anopheles sinensis(***)is the predominant malaria vector in *** impact of S-methoprene on the emergence process of mosquito larvae suggests its potential as a control met... 详细信息

关键词： sinensis China. predominant

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Relationships Between Meteorological Factors and Mongolian Gerbils and Its Flea Burdens—Xilingol League,Inner Mongolia Autonomous Region,China,2012–2021

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China CDC weekly 2024年第23期6卷 547-552,I0012-I0018页

作者： Ke Li Zhenxu Wang Xiaohui Wei Haoqiang Ji Meng Shang Nan Chang Zihao Wang Chenran Guo Lei Xu Ning Zhao qiyong liu National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina School of Public Health Nanjing Medical UniversityNanjing CityJiangsu ProvinceChina Cheeloo College of Medicine Shandong UniversitySchool of Public HealthJinan CityShandong ProvinceChina Vanke School of Public Health Tsinghua UniversityBeijingChina

Introduction:Plague is a significant global infectious disease,its spread is linked to host and flea *** conditions can impact flea populations and host densities,hence influencing plague *** the connection between meteorological factors,flea populations,and rodent densities in Inner Mongolia’s natural plague foci can aid in predicting and managing plague ***:Monthly data on flea index,rodent density,meteorological factors,and normalized difference vegetation index(NDVI)were collected for the study *** additive modeling(GAM)was used to analyze the non-linear and lag effects of meteorological factors on flea index and rodent *** equation modeling(SEM)was employed to investigate the relationships among meteorological factors,NDVI,flea index,and rodent ***:GAM analysis revealed that temperature,precipitation,relative humidity,and NDVI had significant linear,non-linear,and time-lagged impacts on the density of Mongolian gerbils and the flea *** analysis indicated that meteorological factors could directly influence the density and flea index of Mongolian gerbils,or indirectly impact NDVI,subsequently influencing gerbil density and the flea ***:Meteorological factors primarily influence gerbil density and flea index indirectly by affecting NDVI and the relationship between flea index and gerbil *** study offers additional support for the significance of meteorological factors and NDVI in influencing the vector-rodent system,offering valuable insights for predicting and managing plague outbreaks.

关键词： meteorological offering humidity

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Relationship between climatic factors and the flea index of two plague hosts in Xilingol League, Inner Mongolia Autonomous Region

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生物安全与健康(英文) 2024年第04期06卷 244-250页

作者： Zhang Lu Wang Zihao Chang Nan Shang Meng Wei Xiaohui Li Ke Li Jinyu Lun Xinchang Ji Haoqiang liu qiyong National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Centre for Disease Control and Prevention WHO Collaborating Centre for Vector Surveillance and Management Beijing China School of Public Health Nanjing Medical University Nanjing China School of Public Health Cheeloo College Medicine Shandong University Jinan China

Climatic factors are closely associated with the occurrence of vector-borne diseases, and they also influence the distribution of vectors. The occurrence of plague is closely related to the population dynamics of fleas and their host animals, as well as climatic conditions. This study focused on Xilingol League, utilizing climatic and flea index data from 2012 to 2021. Spearman correlation and "Boruta" importance analysis were conducted to screen for climatic variables. A generalized additive model (GAM) was employed to investigate the influence of climatic factors and rodent density on the flea index. GAM analysis revealed distinct trends in flea index among different rodent hosts. ForMeriones unguiculatus, the flea index declined with increased density and with higher humidity, yet rose with greater lagged sunshine duration. ForSpermophilus dauricus, an initial increase in flea index with density was observed, followed by a decrease, and a rise in the index was noted when ground temperatures were low. This study reveals the nonlinear interactions and lag effects among climatic factors, density, and flea index. Climatic factors and density variably influence the flea index of twoYersinia pestis hosts. This research advances the prediction and early warning efforts for plague control, providing a theoretical basis for rodent and flea eradication strategies.

关键词： Climate change Plague Flea Meriones unguiculatus Spermophilus dauricus

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全球消除疟疾的生物学挑战Ⅳ媒介按蚊入侵

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中国血吸虫病防治杂志 2024年第3期36卷 247-250页

作者：刘起勇传染病溯源预警与智能决策全国重点实验室、中国疾病预防控制中心传染病预防控制所北京102206

在国际交流与气候变化的驱动下,媒介按蚊入侵与扩散给全球疟疾消除目标的实现带来了新挑战。本文以斯氏按蚊入侵加重非洲疟疾流行为例,对全球按蚊入侵现状进行了梳理,结合媒介按蚊潜在入侵风险预估,揭示全球疟疾消除的困难与挑战,为各... 详细信息

在国际交流与气候变化的驱动下,媒介按蚊入侵与扩散给全球疟疾消除目标的实现带来了新挑战。本文以斯氏按蚊入侵加重非洲疟疾流行为例,对全球按蚊入侵现状进行了梳理,结合媒介按蚊潜在入侵风险预估,揭示全球疟疾消除的困难与挑战,为各国加强媒介按蚊入侵预警、媒介按蚊入侵的可持续精准防控提供参考。

关键词：疟疾消除按蚊入侵媒介控制

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高职院校智能广播系统设计

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电声技术 2024年第1期48卷 98-101页

作者：刘其永江苏省司法警官高等职业学校江苏南京211805

针对传统校园广播系统的不足,文章在分析高职院校智能广播系统功能需求的基础上,为高职院校开发设计一种智能广播系统,有效提高高职院校校园广播系统的智能化水平,为其他院校开发智能广播系统提供参考。

关键词：高职院校广播系统智能化

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Aedes Surveillance and Risk Warnings for Dengue—China,2016−2019

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China CDC weekly 2020年第24期2卷 431-437页

作者： Xiaobo liu qiyong liu State Key Laboratory of Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesWHO Collaborating Centre for Vector Surveillance and ManagementNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

Introduction:Aedes surveillance plays an important role in the risk warning and control of dengue in *** study analyzed Aedes larval density and its indicated dengue risk in 23 provincial-level administrative divisions(PLADs)from 2016 to 2019 to provide scientific evidence for sustainable dengue management(SDM)in the ***:The Breteau index(BI)and Mosq-ovitrap index(MOI)methods were utilized for Aedes larvae surveillance in 23 PLADs with 3 categories based on dengue risk stratification and Aedes *** and MOI were calculated and then dengue risk warning was carried out for the guidance of SDM in these PLADs based on the findings of Aedes ***:The seasonal fluctuations of Aedes larval density were similar in six class I PLADs during 2016–2019,and the density of Aedes larvae was relatively high in the PLADs of Zhejiang,Hainan,and Fujian while it was relatively low in Yunnan and *** Shanghai and Jiangsu,the BI of all other class II PLADs had reached the dengue transmission threshold during the study *** class III PLADs,the BI had reached dengue transmission threshold in most months in Shandong and Hebei during the study *** MOI was higher than 5 from June to September in all the studied years in Guangdong and was higher in most studied years in *** MOI of Beijing in August reached dengue transmission or outbreak threshold from 2017 to *** and Implications for Public Health Practice:Most class I and class II PLADs were at risk of dengue transmission during the surveillance months,2016–*** Aedes surveillance and risk warnings should be carried out in specific PLADs so as to provide scientific basis for SDM in the future.

关键词： Aedes utilized surveillance

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Sustainable Pest Management for Health and Well-Being

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China CDC weekly 2020年第24期2卷 438-442页

作者： qiyong liu State Key Laboratory of Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesWHO Collaborating Centre for Vector Surveillance and ManagementNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina

Pests can not only cause nuisances and allergic reactions and transmit a range of diseases,but they can also pose serious threat to other aspects of life such as the environment,food,agriculture,crops,*** time,the pes... 详细信息

关键词： diseases allergic crops

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Reported Vector-Borne Diseases --China, 2018

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China CDC weekly 2020年第14期2卷 219-224页

作者： qiyong liu Yuan Gao State Key Laboratory of Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionWorld Health Organization Collaborating Center for Vector Surveillance and ManagementBeijingChina

Introduction:Vector-borne diseases are an important type of infectious disease in *** study aims to present a summary of vector-borne diseases reported in China in 2018 to provide information on their control and ***:A descriptive analysis was utilized to explore the epidemiological ***:A total of 51,599 cases with vector-borne diseases were reported in 2018 with an incidence rate of 3.69/100,*** typhus,hemorrhagic fever with renal syndrome(HFRS),and dengue contributed to 85.08%of all the cases.A total of 377 fatalities were included with a case fatality rate of 0.73%.Japanese encephalitis(JE),severe fever with thrombocytopenia syndrome(SFTS),and HFRS accounted for 95.76%of all *** vector-borne diseases show disparities in gender,age groups,seasons,and *** and Implications for Public Health Practice:In 2018,vector-borne diseases caused substantial morbidity and mortality in China's Mainland with heterogeneity in populations affected and *** regions should adopt targeted strategies and measures according to vulnerable populations and diseases.

关键词： diseases mortality utilized

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The patterns and driving forces of dengue invasions in China

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Infectious Diseases of Poverty 2023年第2期12卷 36-50页

作者： Zhe Zhao Yujuan Yue Xiaobo liu Chuanxi Li Wei Ma qiyong liu Department of Epidemiology School of Public HealthCheeloo College of MedicineShandong University44 Wenhua RoadLixia DistrictJinan250012People’s Republic of China State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and Prevention155 Changbai RoadChangping DistrictBeijing102206People’s Republic of China Department of Vector Control School of Public HealthCheeloo College of MedicineShandong University44 Wenhua RoadLixia DistrictJinan250012People’s Republic of China Shandong University Climate Change and Health Center Jinan250012People’s Republic of China

Background Global connectivity and environmental change pose continuous threats to dengue invasions from worldwide to ***,the intrinsic relationship on introduction and outbreak risks of dengue driven by the landscape features are still *** study aimed to map the patterns on source-sink relation of dengue cases and assess the driving forces for dengue invasions in *** We identified the local and imported cases(2006–2020)and assembled the datasets on environmental *** vector auto-regression model was applied to detect the cross-relations of source-sink *** selected the major environmental drivers via the Boruta algorithm to assess the driving forces in dengue outbreak dynamics by applying generalized additive *** reconstructed the internal connections among imported cases,local cases,and external environmental drivers using the structural equation *** From 2006 to 2020,81,652 local dengue cases and 12,701 imported dengue cases in China were *** hotspots of dengue introductions and outbreaks were in southeast and southwest China,originating from South and Southeast ***-imported dengue cases,as the Granger-cause,were the initial driver of the dengue dynamic;the suitable local bio-socioecological environment is the fundamental factor for dengue *** Bio8[odds ratio(OR)=2.11,95%confidence interval(CI):1.67–2.68],Bio9(OR=291.62,95%CI:125.63–676.89),Bio15(OR=4.15,95%CI:3.30–5.24),normalized difference vegetation index in March(OR=1.27,95%CI:1.06–1.51)and July(OR=1.04,95%CI:1.00–1.07),and the imported cases are the major drivers of dengue local transmissions(OR=4.79,95%CI:4.34–5.28).The intermediary effect of an index on population and economic development to local cases via the path of imported cases was detected in the dengue dynamic *** Dengue outbreaks in China are triggered by introductions of imported cases and boosted by landscape features and ***

关键词： Dengue Invasion Imported case Landscape Driving forces China

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