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A relatively high zoonotic trematode prevalence in Orientogalba ollula and the developmental characteristics of isolated trematodes by experimental infection in the animal model

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infectious diseases of Poverty 2022年第4期11卷 72-80页

作者： Jian Li Yijing Ren Lei Yang Jiani Guo Haiying Chen Jiani Liu Haoqiang Tian Qingan Zhou Weiyi Huang Wei Hu Xinyu Feng Basic Medical College Guangxi Traditional Chinese Medical UniversityNanning 530005GuangxiChina College of Life Sciences Inner Mongolia UniversityHohhot 010070China College of Animal Science and Technology Guangxi UniversityNanning 530005GuangxiChina National Institute of Parasitic diseases Chinese Center for Disease Control and PreventionKey Laboratory of Parasite and Vector Biology of China Ministry of HealthWHO Collaborating Centre for Tropical DiseasesJoint Research Laboratory of Genetics and Ecology On Parasite-Host InteractionChinese Center for Disease Control and PreventionFudan University200025 ShanghaiChina Department of infectious diseases Huashan HospitalState Key Laboratory of Genetic EngineeringMinistry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringMinistry of Education Key Laboratory of Contemporary AnthropologySchool of Life SciencesFudan UniversityShanghai 200438China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 20025China One Health center Shanghai Jiao Tong University-The University of EdinburghShanghai 20025China

Background:Food-borne parasitic diseases decrease food safety and threaten public *** snail species is an intermediate host for numerous human parasitic *** ollula has been reported as intermediate hosts of many zoonotic ***,we investigated the prevalence of zoonotic trematodes *** in Guangxi,China,and assessed their zoonotic ***:Snails were collected from 54 sites in 9 cities throughout *** snail and trematode larvae species were determined by combining morphological characteristics and molecular *** trematodes prevalence and constituent ratio were calculated and compared among different habitat *** trees of the trematode species were constructed using the neighbor-joining method with nuclear internal transcribed spacer 2(ITS2)*** developmental cycles of the isolated trematodes were examined by experimental infection in *** developmental characteristics ofEchinostoma revolutum was recorded by dissecting infected ducklings from 1-day post infection(dpi)to 10 ***:The overall prevalence of trematode larvae was 22.1%(1818/8238)*** from 11 sample *** together with molecular identification,showed ***,Australapatemon sp.,Hypoderaeum conoideum,Pharyngostomum cordatum,andEchinostoma ***,with the highest infection rate ***(13.0%).However,noFasciola larvae were *** trematodes prevalence and constituent ratio varied in two sub-biotypes(P<0.01).A neighbor-joining tree analysis of ITS2 sequences resulted in distinct monophyletic clades supported by sequences from isolated larvae with high bootstrap *** exposed *** infected withEchinostoma sp.,***,*** larvae were successfully *** animal model forEchinostoma revolutum was successfully *** matured from larvae to adult at 10 dpi in the intestine of the duck,and the devel

关键词： Orientogalba ollula Zoonotic trematode Intermediate host Prevalence ITS2

Health Status and Food Intake Frequency of Elderly Residents During COVID-19 Community Closure—Jiangxia District,Wuhan City,China,2020

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China CDC weekly 2020年第27期2卷 496-501页

作者： Pengkun Song Cheng Li Ganyu Feng Jian Zhang Li Li Titi Yang Mingna Dong Ailing Liu Qi Zhang Yujing Liu Jinglei Wang Tanxi Ge Qing Yu Gangqiang Ding National Institute for Nutrition and Health Chinese Center for Disease Control and Prevention.BeijingChina Jiangxia disease Control and Prevention center HubeiChina Chinese center for disease Control and Prevention BeijingChina National Institute of Parasitic diseases Chinese Center for Disease Control and Prevention(National Center for International Research on Tropical Diseases)Key Laboratory of Parasite and Vector BiologyNational health and Family Planning CommissionWHO Collaborating Center for Tropical DiseasesShanghaiChina

What is already known about this topic?Elderly persons are vulnerable to infectious diseases,and nutritional status and health conditions were important to evaluate for disease prevention and ability to recover for the elderly during the coronavirus disease 2019(COVID-19)*** is added by this report?In our study,a rapid assessment questionnaire was used to investigate the change of household life and dietary intake of the elderly(aged 60 years or more)during community *** consumption frequency of aquatic food products,soybeans,and fresh fruits declined dramatically with reductions of 70.9%,70.9%,and 53.0%,respectively,and 49.6%of the elderly lived with chronic non-communicable diseases but had little knowledge of nutrition and *** are the implications for public health practice?Community closure measures in Wuhan City have played a key role in cutting off the transmission route of COVID-19 and protecting vulnerable *** a high-risk population,the elderly should be advised to maintain and strengthen a balanced diet with proper nutrition through increasing intake of aquatic food products,soybeans,fruits,and vegetables,reducing total caloric intake,and decreasing oil and salt *** measures will be significant for the elderly to reduce the risk of chronic disease complications and COVID-19 infection and to decrease the chance of critical illness.

关键词： closure prevention maintain

Public health implications of Yersinia enterocolitica investigation:an ecological modeling and molecular epidemiology study

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infectious diseases of Poverty 2023年第2期12卷 134-135页

作者： Yuan Yue Jinxin Zheng Mei Sheng Xiang Liu Qiong Hao Shunxian Zhang Shuai Xu Zhiguo Liu Xuexin Hou Huaiqi Jing Yang Liu Xuezhang Zhou Zhenjun Li Key Laboratory of the Ministry of Education for the Conservation and Utilization of Special Biological Resources of Western China Ningxia University Yinchuan People’s Republic of China State Key Laboratory for infectious disease Prevention and Control National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing People’s Republic of China Ningxia Hui Autonomous Region Food Testing and research Institute Yinchuan People’s Republic of China Department of Nephrology Ruijin Hospital Institute of Nephrology Shanghai Jiao Tong University School of Medicine Shanghai People’s Republic of China School of Global Health Chinese Center for Tropical Diseases Research-Shanghai Jiao Tong University School of Medicine Shanghai People’s Republic of China Ningxia Hui Autonomous Region Centre for disease Control and Prevention Yinchuan People’s Republic of China Longhua Hospital Shanghai University of Traditional Chinese Medicine Shanghai People’s Republic of China Department of Computer Science Hong Kong Baptist University Hong Kong People’s Republic of China

Background Yersinia enterocolitica has been sporadically recovered from animals,foods,and human clinical samples in various regions of Ningxia,***,the ecological and molecular characteristics of ***,as well as public health concerns about infection in the Ningxia Hui Autonomous Region,remain *** study aims to analyze the ecological and molecular epidemiological characteristics of *** in order to inform the public health intervention strategies for the contains of related *** A total of 270 samples were collected for isolation[animals(n=208),food(n=49),and patients(n=13)],then suspect colonies were isolated and identified by the API20E biochemical identification system,serological tests,biotyping tests,and 16S ***,we used an ecological epidemiological approach combined with machine learning algorithms(general linear model,random forest model,and eXtreme Gradient Boosting)to explore the associations between ecological factors and the pathogenicity of ***,average nucleotide identity(ANI)estimation,single nucleotide polymorphism(SNP),and core gene multilocus sequence typing(cgMLST)were applied to characterize the molecular profile of isolates based on whole genome *** statistical test used single-factor analysis,Chi-square tests,t-tests/ANOVA-tests,Wilcoxon rank-sum tests,and Kruskal–Wallis *** A total of 270 isolates of Yersinia were identified from poultry and livestock(n=191),food(n=49),diarrhoea patients(n=13),rats(n=15),and hamsters(n=2).The detection rates of samples from different hosts were statistically different(χ^(2)=22.636,P<0.001).According to the relatedness clustering results,270 isolates were divided into 12 species,and ***(n=187)is a predominated *** isolates made up 52.4%(98/187),while non-pathogenic isolates made up 47.6%(89/187).Temperature and precipitation were strongly associated with the pathogenicity of the

关键词： Yersinia enterocolitica Ecological Machine learning Molecular epidemiology Core genome multilocus sequence typing Ningxia,China

Diversity of Phlebotomine sand flies(Diptera: Psychodidae) in mountainous and plain areas of an endemic focus of anthroponotic cutaneous leishmaniasis in Iran

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Asian Pacific Journal of tropical Biomedicine 2020年第5期10卷 201-207页

作者： Saideh Yousefi Ali Reza Zahraei-Ramazani Yavar Rassi Mohammad Reza Aflatoonian Mohammad Reza Yaghoobi-Ershadi Abbas Aghaei-Afshar Amir Ahmad Akhavan Masoumeh Amin Azim Paksa Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Sirjan Faculty of Medical Sciences SirjanIran research center of tropical and infectious diseases Kerman University of Medical SciencesKermanIran Leishmaniasis research center Kerman University of Medical SciencesKermanIran Department of Parasitology Faculty of MedicineTabriz University of Medical ScienceTabrizIran

Objective: To determine the diversity of sand flies in different biotopes of mountainous and plain areas of Bam County as the most infected focus of anthroponotic cutaneous leishmaniasis in southeast Iran, and synanthropic index of Phlebotomus sergenti Parrot, and Phlebotomus papatasi Scopoli as the main vectors of cutaneous leishmaniasis in ***: Sand flies were captured once a month using sticky traps in domestic, peri-domestic, agricultural, and sylvatic biotopes in the plain and mountainous areas. Alpha diversity indices, including richness, evenness, Shannon-Wiener;beta diversity indices(Jaccard’s and Sorensen’s similarity indices) and synanthropic index were calculated. Results: A total of 2 664 specimens of 9 sand fly species were collected from mountainous(47%) and plain(53%) areas. Species richness, species evenness, and Shannon-Wiener indices were obtained as 9, 0.637, and 1.399, respectively in the mountainous area. Phlebotomus sergenti and Phlebotomus papatasi were constant species with the synanthropic index of-18.463 and-29.412, respectively. In addition, species richness, species evenness, and Shannon-Wiener indices were 4, 0.690, and 0.956, respectively in the plain area. Phlebotomus sergenti and Phlebotomus papatasi were dominant species with the synanthropic index of +9.695 and +36.207, respectively. Similarity indices were low among different biotopes of plain and mountainous ***: A basic knowledge about the diversity of sand flies in various biotopes is essential to design sound control programs. Biodiversity and synanthropic indices of sand flies are different in plain and mountainous areas due to the difference in biotic and abiotic factors between the two areas.

关键词： Sand flies Diversity Richness Evenness Synanthropic index Iran

Study on Leishmania infection in cats from Ahar,East Azerbaijan Province and North West Iran by parasitological,serological and molecular methods

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Asian Pacific Journal of tropical Biomedicine 2015年第1期5卷 40-43页

作者： Taher Nemati Majid Khanmohammadi Ahad Bazmani Nasrin Mirsamadi Mohammad Hassan Kohansal Koshki Mehdi Mohebali Mohammad Fatollahzadeh Esmail Fallah tabriz infectious and tropical disease research center Department of ParasitologyFaculty of MedicineTabriz University of Medical Sciences Department of Parasitology Iran University of Medical Science Department of Parasitology Central LaboratoryTabriz University of Medical Sciences Department of Parasitology and Mycology Zanjan University of Medical Sciences Department of Medical Parasitology and Mycology School of Public HealthTehran University of Medical Sciences

Objective:To study Leishmania infection in cats and its potential role in triuismission of the disease to human by parasitological,serological and molecular methods in Ahar District,East Azerbaijan ***:In this study,65 cats from different parts of Ahar Province were *** cats were anesthetized with chloroform and blood samples were taken from jugular vein and tested by direct agglutination *** and liver smear samples were prepared in order to microscopically examine these organs,and also cultured in Novy-MucNeal-Nicolle and Roswell Park Memorial Institute 1 641) ***,spleen tissue DNA was extracted to perform polymerase chain reaction ***:In direct agglutination test,4(6%) cats had a positive titer,while 14(22%) cats had a titer of 1:80 which was suspected for an infection and 47(729c) cats were *** results were negative and ill polymerase chain reaction no amplification was ***:Wc found no case of feline visceral *** needs more extensive studies by using a larger number of cats to firmly establish leishmaniasis in this area.

关键词： Cat Ahar Leishmania

Distribution of Suitable Environments for Phlebotomus chinensis as the Vector for Mountain-Type Zoonotic Visceral Leishmaniasis-Six Provinces, China

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China CDC weekly 2020年第42期2卷 815-819页

作者： Xinyi Wang Jingbo Xue Shang Xia Shuai Han Xiaokang Hu Zhengbin Zhou Yi Zhang Shizhu Li National Institute of Parasitic diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchKey Laboratory of Parasite and Vector BiologyMinistry of HealthWHO Collaborating Center for Tropical DiseasesNational Center for International Research on Tropical DiseasesMinistry of Science and TechnologyShanghaiChina School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiChina

Summary What is already known on this topic?Phlebotomus chinensis(***)is a sandfly and the main vector of mountain-type zoonotic visceral leishmaniasis(MT-ZVL)in ***,the distribution of suitable environments for the v... 详细信息

关键词： China distribution chinensis

Seasonal malaria chemoprevention in Africa and China's upgraded role as a contributor:a scoping review

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infectious diseases of Poverty 2023年第4期12卷 99-99页

作者： Ming Xu Yun-Xuan Hu Shen-Ning Lu Muhammad Abdullahi Idris Shu-Duo Zhou Jian Yang Xiang-Ning Feng Yang-Mu Huang Xian Xu Ying Chen Duo-Quan Wang Department of Global Health School of Public Health Peking University Haidian District Beijing China Institute for Global Health and Development Peking University Beijing China National Institute of Parasitic diseases Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector Biology WHO Collaborating Centre for Tropical Diseases National Center for International Research On Tropical Diseases Shanghai China Physiotherapy Department Federal Medical center Gusau Nigeria Anhui Provincial center for disease Control and Prevention Hefei China School of Global Health Chinese Center for Tropical Diseases Research Shanghai Jiao Tong University School of Medicine Shanghai China

Background Children under five are the vulnerable population most at risk of being infected with Plasmodium para-sites,especially in the Sahel *** malaria chemoprevention(SMC)recommended by World Health Organi-zation(WHO),has proven to be a highly effective intervention to prevent *** more deaths reported during the COVID-19 pandemic than in previous years due to the disruptions to essential medical services,it is,therefore,necessary to seek a more coordinated and integrated approach to increasing the pace,coverage and resilience of *** this end,fully leverage the resources of major players in the global fight against malaria,such as China could accelerate the SMC process in *** We searched PubMed,MEDLINE,Web of Science,and Embase for research articles and the Institutional Repository for Information Sharing of WHO for reports on *** used gap analysis to investigate the challenges and gaps of SMC since *** the above methods to explore China's prospective contribution to *** A total of 68 research articles and reports were *** gap analysis,we found that despite the delays in the SMC campaign,11.8 milion children received SMC in ***,there remained some challenges:(1)a shortage of fully covered monthly courses;(2)lack of adherence to the second and third doses of amodiaquine;(3)four courses of SMC are not sufficient to cover the entire malaria transmission season in areas where the peak transmission lasts longer;(4)additional interventions are needed to consolidate SMC *** was certified malaria-free by WHO in 2021,and its experience and expertise in malaria elimination can be shared with high-burden *** the potential to join the multilateral cooperation in SMC,including the supply of quality-assured health commodities,know-how transfer and experience sharing,China is expected to contribute to the ongoing Scale-up of *** A combination of necessary prevent

关键词： Seasonal malaria chemoprevention Malaria Prevention China's contribution Multilateral partnership

A framework for assessing local transmission risk of imported malaria cases

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infectious diseases of Poverty 2019年第3期8卷 56-63页

作者： Lei Lei Jack SRichards Zhi-Hong Li Yan-Feng Gong Shao-Zai Zhang Ning Xiao Jiangxi Provincial center for disease Control and Prevention NanchangChina The Macfarlane Burnet Institute for Medical research and Public Health Ltd MelbourneAustralia Department of Medicine University of MelbourneMelbourneAustralia National Institute of Parasitic diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesMinistry of Science and TechnologyKey Laboratory of Parasite and Veaor BiologyMinistry of HealthShanghaiChina

Background:A key issue in achieving and sustaining malaria elimination is the need to prevent local transmission arising from imported cases of *** likelihood of this occurring depends on a range of local faaors,and these can be used to allocate resources to contain ***,a risk assessment and management strategy is required to identify risk indexes for malaria transmission when imported cases *** risks also need to be quantified and combined to give a weighted risk index *** can then be used to allocate the resources to each administrative region to prevent transmission according to the degree of ***:A list of potential risk indexes were generated from a literature review,expert consultation and panel *** were initially classified into 4 first-level indexes including infection source,transmitting conditions,population vulnerability and control *** of these was then expanded into more detailed second-level *** Delphi method was then used to obtain expert opinion to review and revise these risk indexes over two consecutive rounds to quantify agreement among experts as to their level of *** indexes were included in the final Transmission Risk Framework if they achieved a weighted importance score≥*** Analytic Hierarchy Process was then used to calculate the weight allocated to each of the final risk *** was then used to create an assessment framework that can be used to evaluate local transmission risk in different ***:Two rounds of Delphi consultation were ***-three experts were used at each round with 100%recovery rate of participant *** coordination coefficients(W)for the two rounds of Delphi consultation were 0.341 and 0.423,respectively(P<0.05).Three first-level indexes and 13 second-level indexes were *** Analytic Hierarchy Process was performed to calculate the weight of the *** the first-level indexes,i

关键词： Imported malaria Transmission risk assessment Analytic hierarchy process Delphi method

Assessing the spatiotemporal malaria transmission intensity with heterogeneous risk factors:A modeling study in Cambodia

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infectious disease Modelling 2023年第1期8卷 253-269页

作者： Mutong Liu Yang Liu Ly Po Shang Xia Rekol Huy Xiao-Nong Zhou Jiming Liu Department of Computer Science Hong Kong Baptist UniversityHong Kong Special administrative region of China HKBU-CSD&NIPD Joint research Laboratory for Intelligent disease Surveillance and Control China National center for Parasitology Entomology&Malaria Control(CNM)Ministry of HealthPhnom PenhCambodia National Institute of Parasitic diseases Chinese Center for Disease Control and PreventionShanghaiChina Key Laboratory of Parasite and Vector Biology National Health and Commission of the People's Republic of ChinaShanghaiChina WHO Collaborating center for tropical diseases ShanghaiChina

Malaria control can significantly benefit from a holistic and precise way of quantitatively measuring the transmission intensity,which needs to incorporate spatiotemporally varying risk *** this study,we conduct a systematic investigation to characterize malaria transmission intensity by taking a spatiotemporal network perspective,where nodes capture the local transmission intensities resulting from dominant vector species,the population density,and land cover,and edges describe the cross-region human mobility *** inferred network enables us to accurately assess the transmission intensity over time and space from available empirical *** study focuses on malaria-severe districts in *** malaria transmission intensities determined using our transmission network reveal both qualitatively and quantitatively their seasonal and geographical characteristics:the risks increase in the rainy season and decrease in the dry season;remote and sparsely populated areas generally show higher transmission intensities than other *** findings suggest that:the human mobility(e.g.,in planting/harvest seasons),environment(e.g.,temperature),and contact risk(coexistences of human and vector occurrence)contribute to malaria transmission in spatiotemporally varying degrees;quantitative relationships between these influential factors and the resulting malaria transmission risk can inform evidence-based tailor-made responses at the right locations and times.

关键词： Malaria Transmission intensity assessment Spatiotemporal network Computational approach Heterogeneous risk factors