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Improving the surveillance and response system to achieve and maintain malaria elimination:a retrospective analysis in Jiangsu Province,China

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Infectious Diseases of Poverty 2022年第1期11卷 56-67页

作者： Yuanyuan Cao Guangyu Lu Chris Cotter Weiming Wang Mengmeng Yang Yaobao Liu Cheng Liang Huayun Zhou Yan Lu Jun Yan Guoding Zhu Jun Cao Key Laboratory of National Health Commission(NHC)On Parasitic Disease Control and Prevention Jiangsu Provincial Key Laboratory On Parasite and Vector Control TechnologyJiangsu Institute of Parasitic DiseasesWuxi214064JiangsuChina Institute of Public Health Medical College of Yangzhou UniversityJiangsu ProvinceYangzhou city225000China malaria Elimination Initiative Institute for Global Health SciencesUniversity of California San FranciscoSan FranciscoCAUSA Department of Women’s and Children’s Health International Maternal and Child HealthUppsala UniversityUppsalaSweden Center for Global Health School of Public HealthNanjing Medical UniversityNanjing211166China Health and Quarantine Department Nanjing CustomsNanjing210001China Chinese Center for Disease Control and Prevention Beijing102206China

Background:Following initiation of China’s National malaria Elimination Action Plan(NMEAP)in 2010,the'1-3-7’approach was developed and rolled out in China to facilitate the malaria elimination programme and accelerate malaria *** study aims to summarize and condense these experiences through a retrospective analysis in Jiangsu Province,which could be adapted and applied in other malaria elimination settings ***:A retrospective analysis of imported malaria cases into China identified through an improved surveillance and response system in Jiangsu Province was carried out for the period of *** improve the malaria surveillance and response system,Centers for Diseases Control and Prevention from the prefectures and counties in Jiangsu province conducted population-level health education to improve healthcare seeking behavior,strengthened capacity of health facilities to improve performance of malaria diagnosis and treatment,and raised the capacity of public health providers to improve implementation of the'1-3-7’*** variables were carried out by Chi square tests with Fisher’s exact ***:From 2001 to 2020,a total of 9,879 malaria cases were reported in Jiangsu *** 2012,no indigenous malaria cases have been reported in Jiangsu ***,in recent years,there has been a substantial increase of imported falciparum malaria *** 2012 and 2020,an estimated 61.57 million individuals have benefited from population-level health education in Jiangsu *** healthcare-seeking services among the 2,423 imported malaria cases,687(28.4%)and 1,104(45.6%)cases visited hospitals on the first day and the second day from symptom onset,respectively.A total of 1,502(61.9%)cases were diagnosed on the first day at medical *** Province achieved 100%,99.4%and 98.3%completion rate in terms of case detection and notification(within one day),case investigation(within three days)and foci

关键词： China 1-3-7 approach Surveillance and response malaria Elimination Imported case Jiangsu Retrospective study

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Role of international network on surveillance and response system leading to malaria elimination: China’s engagement in global health

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Infectious Diseases of Poverty 2022年第3期11卷 63-68页

作者： Shenning Lu Lulu Huang Lei Duan Qiuli Xu Xuejiao Ma Wei Ding Duoquan Wang Shan Lv Ning Xiao Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research On Tropical DiseasesNational Institute of Parasitic DiseasesShanghai200025China Pudong New Area Center for Disease Control and Prevention and Pudong Institute of Preventive Medicine Fudan UniversityPudong New AreaShanghai200136China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai200025China State Key Laboratory of Genetic Engineering Ministry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringMinistry of Education Key Laboratory of Contemporary AnthropologyDepartment of Infectious DiseasesSchool of Life ScienceHuashan HospitalFudan UniversityShanghai200433China

China has accumulated multiple practices and experiences in building and enhancing malaria surveillance and response system. As China’s engagement into global health has gathered stronger momentum than ever, China together with the Swiss Tropical and Public Health Institute and WHO has organised five sessions of the International Forum on Surveillance-Response System Leading to Tropical Diseases Elimination during 2012–2020, in which malaria elimination has always been one of the hottest topics. In this study, the roles of international network on the surveillance and response system were explored to achieve a global malaria-free goal. China’s approach to malaria elimination has demonstrated significance of global collaboration on taking joint prevention and control, and building a worldwide institutional-based network.

关键词： Surveillance and response system malaria Elimination Network

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Occurrence of asymptomatic malaria infection and living conditions in the lowlands of Ethiopia: a community-based cross-sectional study

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Infectious Diseases of Poverty 2022年第5期11卷 41-49页

作者： Endale Mengesha Goshu Meseret Dessalegne Zerefa Habteyes Hailu Tola Water and Public Health Stream Ethiopian Institute of Water ResourcesAddis Ababa UniversityAddis AbabaEthiopia Tuberculosis/HIV Research Directorate Ethiopian Public Health InstituteP.O.Box 1242Addis AbabaEthiopia.

Background:A significant decline in malaria burden was documented in previously high burden African *** though the global decline in malaria burden is significant,about 95%of it was typically found in 29 African countries and the decline was affected by COVID-19 in *** considerable reduction in malaria incidence was noted due to effective prevention and treatment efforts,and rapid changes in living *** relationship between the occurrence of asymptomatic malaria infection and household living conditions is well *** study aimed to determine the association between household living conditions and the occurrence of asymptomatic malaria in the lowlands of ***:A community-based cross-sectional study was conducted from January to March 2021 in twelve villages of Gambella,Southern Nation Nationalities and People Region and Afar in Ethiopia.A total of 1366 households were randomly selected,interviewed,and tested for malaria by rapid diagnostic test and blood film microscopic *** logistic regression model was used to determine the independent association between living conditions and asymptomatic malaria ***:The prevalence of asymptomatic malaria infection among individuals living in dwellings built with traditional floor/wall/roof ranges from 8.1%to 8.4%while it ranges from 2.0%to 4.6%among those living in modern floor/wall/roof *** built with traditional wall materials(P=0.050),spending nights with cattle in the same house(Pmalaria ***:Asymptomatic malaria infection was 4.3 times higher among occupants residing in dwellings built with traditional wall materials;5.6 times higher among households spending nights with cattle in the same house,and 2.3 times higher among households with kitchen in the main house with no ***,po

关键词： Occurrence Asymptomatic malaria Households Wall Prevalence Mosquito And livestock

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A direct,sensitive and high-throughput genus and species-specific molecular assay for large-scale malaria screening

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Infectious Diseases of Poverty 2022年第2期11卷 11-22页

作者： Yaling Zhao Ye Zhao Yu Sun Lihua Fan Duoquan Wang Heng Wang Xiaodong Sun Zhi Zheng Institute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic MedicinePeking Union Medical CollegeBeijingChina Yunnan Institute of Parasitic Diseases Yunnan Center for Malaria ResearchInstitute of Vector and Pathogen BiologyDali UniversityPuerYunnanChina National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionWHO Collaborating Center for MalariaSchistosomiasisand FilariasisKey Laboratory of Parasite and Vector BiologyMinistry of HealthShanghaiChina Blood Transfusion Department Peking Union Medical College HospitalChinese Academy of Medical SciencesBeijingChina

Background:Infectious disease diagnostics often requires sensitive molecular assays that identify at both genus and species *** large scale screening,such as malaria screening for elimination,diagnostic assay can be a challenge,as both the throughput and cost of the assay must be *** requirement of nucleic acid extraction hampers the throughput of most molecular ***-amplification of multiple species or multiplex identification either can result in missed diagnosis or are too costly for large-scale screening.A genus-and species-specific diagnostic assay with simplified procedure,high sensitivity and throughput is still *** study aimed to develop a sensitive and high-throughput approach for large-scale infectious disease ***:We developed multi-section Capture and Ligation Probe PCR(mCLIP-PCR)for the direct detection of RNA without extraction and reverse *** tailed sandwich hybridization probes were used to bind at genus-and species-specific sections of the target RNA to cooperatively capture the target onto a 96-well *** enzymatic ligation of the bound probes,a single-stranded DNA formed at each section with distinct tail sequence at the *** were separately PCR-amplified with primers corresponding to tail sequences for genus or species *** applied the method to the active screening ofPlasmodium infections of 4,580 asymptomatic dried blood spot samples collected in malaria endemic areas and compared the results with standard qPCR using linear ***:With multi-section cooperative capture but separate amplification strategy,we accurately identified genusPlasmodium and *** *** without RNA extraction,with favorable sensitivities among the published *** the active screening,our method identified all 53 positive infections including two mixed infections,and *** infections that were missed by standard ***:mCLIP-PCR provide

关键词： Infectious disease malaria Molecular screening CLIP-PCR Genus Species High-throughput

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Acceptance,availability and feasibility of RTS,S/AS01 malaria vaccine:A review of literature

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Asian Pacific Journal of Tropical Medicine 2023年第4期16卷 162-168页

作者： Abdullah Nadeem Wajeeha Bilal Department of Medicine Dow University of Health SciencesKarachiPakistan

malaria remains the most serious infectious disease and is one of the leading causes of death among children in malaria endemic *** development of malaria vaccines has been underway since *** progress in the development of vaccine has been made in the last *** 6 October 2021,World Health Organization recommended widespread use of the RTS,S/AS01 malaria *** level of acceptance of RTS,S/AS01 malaria vaccine is relatively low in middle-income *** might be because of lack of information regarding vaccine implementation in such *** proper and efficient execution of the malaria vaccination program necessitates careful consideration of each community's socio-cultural *** most prominent RTS,S/AS01 vaccine trial was conducted from 2009 to 2011 in which eleven sites in seven African countries *** of the trial,published in 2015,provided a promising advance in the development of a malaria vaccine for African *** of 2019,large-scale pilot studies of the vaccine have been conducted in Ghana,Kenya,and Malawi,involving several hundreds of thousands of *** RTS,S/AS01 vaccine shows modest efficacy against malaria and has a feasible mode of *** there is increased risk of meningitis,cerebral malaria,pneumonia,anemia,febrile convulsions and gastroenteritis,the vaccine still has a feasible mode of administration and high cost effectiveness and can be easily implemented in resource-limited settings.

关键词： RTS,S/AS01 malaria Plasmodium Vaccine

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Leveraging mathematical models of disease dynamics and machine learning to improve development of novel malaria interventions

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Infectious Diseases of Poverty 2022年第3期11卷 37-53页

作者： Monica Golumbeanu Guo-Jing Yang Flavia Camponovo Erin M.Stuckey Nicholas Hamon Mathias Mondy Sarah Rees Nakul Chitnis Ewan Cameron Melissa A.Penny Swiss Tropical and Public Health Institute AllschwilSwitzerland Key Laboratory of Tropical Translational Medicine of Ministry of Education and School of Tropical Medicine and Laboratory Medicine The First and Second Affiliated Hospital of Hainan Medical UniversityHainan Medical UniversityHaikouHainanPeople’s Republic of China University of Basel BaselSwitzerland Center for Communicable Disease Dynamics Department of EpidemiologyHarvard T.H.Chan School of Public HealthBostonMA02115USA The Bill&Melinda Gates Foundation SeattleWAUSA Innovative Vector Control Consortium LiverpoolUK malaria Atlas Project Big Data InstituteUniversity of OxfordOxfordUK Curtin University PerthAustralia Telethon Kids Institute Perth Children’s HospitalPerthAustralia

Background:Substantial research is underway to develop next-generation interventions that address current malaria control *** there is limited testing in their early development,it is difficult to predefine intervention properties such as efficacy that achieve target health goals,and therefore challenging to prioritize selection of novel candidate ***,we present a quantitative approach to guide intervention development using mathematical models of malaria dynamics coupled with machine *** analysis identifies requirements of efficacy,coverage,and duration of effect for five novel malaria interventions to achieve targeted reductions in malaria ***:A mathematical model of malaria transmission dynamics is used to simulate deployment and predict potential impact of new malaria interventions by considering operational,health-system,population,and disease *** method relies on consultation with product development stakeholders to define the putative space of novel intervention *** couple the disease model with machine learning to search this multi-dimensional space and efficiently identify optimal intervention properties that achieve specified health ***:We apply our approach to five malaria interventions under *** for malaria prevalence reduction,we identify and quantify key determinants of intervention impact along with their minimal properties required to achieve the desired health *** coverage is generally identified as the largest driver of impact,higher efficacy,longer protection duration or multiple deployments per year are needed to increase prevalence *** show that interventions on multiple parasite or vector targets,as well as combinations the new interventions with drug treatment,lead to significant burden reductions and lower efficacy or duration ***:Our approach uses disease dynamic models and machine learning to support

关键词： Infectious diseases malaria Novel interventions Mathematical modelling Machine learning

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Comparative study of the effect of solvents on the efficacy of neonicotinoid insecticides against malaria vector populations across Africa

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Infectious Diseases of Poverty 2022年第2期11卷 23-31页

作者： Magellan Tchouakui Tatiane Assatse Leon M.J.Mugenzi Benjamin D.Menze Daniel Nguifo-Nguete Williams Tchapga Jonathan Kayondo Francis Watsenga Emile Zola Manzambi Michael Osae Charles S.Wondji Centre for Research in Infectious Diseases(CRID) P.O.Box 13501YaoundeCameroon Parasitology and Ecology Laboratory Department of Animal Biology and PhysiologyFaculty of ScienceUniversity of Yaounde 1P.O.Box 812YaoundeCameroon Institut National de Recherche Biomedicale KinshasaDemocratic Republic of Congo Radiation Entomology and Pest Management Centre Biotechnology and Nuclear Agriculture Research InstituteGhana Atomic Energy CommissionP.O.Box LG80Legon-AccraGhana Department of Vector Biology Liverpool School of Tropical MedicinePembroke PlaceLiverpool L35QAUK International Institute of Tropical Agriculture(IITA) P.O.Box 2008YaoundeCameroon Entomology Department Uganda Virus Research Institute(UVRI)P.O.Box 49EntebbeUganda.

Background:New insecticides with a novel mode of action such as neonicotinoids have recently been recommended for public health by *** monitoring of such novel insecticides requires a robust protocol to monitor the development of resistance in natural *** this study,we comparatively used three different solvents to assess the susceptibility of malaria vectors to neonicotinoids across ***:Mosquitoes were collected from May to July 2021 from three agricultural settings in Cameroon(Njombe-Penja,Nkolondom,and Mangoum),the Democratic Republic of Congo(Ndjili-Brasserie),Ghana(Obuasi),and Uganda(Mayuge).Using the CDC bottle test,we compared the effect of three different solvents(ethanol,acetone,MERO)on the efficacy of neonicotinoids againstAnopheles gambiae *** addition,TaqMan assays were used to genotype key pyrethroid-resistant markers *** and odds ratio based on Fisher exact test were used to evaluate potential cross-resistance between pyrethroids and ***:Lower mortality was observed when using absolute ethanol or acetone alone as solvent for clothianidin(11.4-51.9% mortality in Nkolondom,31.7-48.2% in Mangoum,34.6-56.1% in Mayuge,39.4-45.6% in Obuasi,83.7-89.3% in Congo and 71.1-95.9% in Njombe pendja)compared to acetone+MERO for which 100% mortality were observed for all the *** observations were done for imidacloprid and *** assays(PBO,DEM and DEF)with clothianidin revealed a significant increase of mortality suggesting that metabolic resistance mechanisms are contributing to the reduced susceptibility.A negative association was observed between the L1014F-kdr mutation and clothianidin resistance with a greater frequency of homozygote resistant mosquitoes among the dead than among survivors(OR=0.5;P=0.02).However,the I114T-GSTe2 was in contrast significantly associated with a greater ability to survive clothianidin with a higher frequency of homozygote resistant among surv

关键词： malaria Anopheles Insecticide resistance Neonicotinoids Clothianidin Cross-resistance

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Profile and determinants of delayed care-seeking and diagnosis among patients with imported malaria: a retrospective study in China, 2014–2021

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Infectious Diseases of Poverty 2022年第6期11卷 50-59页

作者： Tao Zhang Duoquan Wang Yingjun Qian Wei Ruan Ying Liu Jing Xia Hui Yan Yuan Sui Shenning Lu Xian Xu Jingjing Jiang Xiaofeng Lyu Shuqi Wang Shizhu Li Weidong Li Anhui Provincial Center for Disease Control and Prevention Hefei 230601China 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 BiologyWHO Collaborating Center for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghai 200025China Zhejiang Provincial Center for Disease Control and Prevention Hangzhou 310051China Henan Provincial Center for Disease Control and Prevention Zhengzhou 450016China Hubei Provincial Center for Disease Control and Prevention Wuhan 430079China Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention Nanning 530028China Brown School Washington UniversitySt.LouisMOUSA School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 200025China

Background: In areas where malaria has been eliminated, delayed care-seeking and diagnosis of imported malaria are constant threats. This study aimed to describe the profile and determinants of delayed care-seeking and diagnosis among patients with imported malaria in ***: This retrospective study assessed surveillance data obtained from 2014 to 2021 in the Chinese provincial-level administrative divisions (PLADs) of Anhui, Henan, Hubei, and Zhejiang, and Guangxi. Epidemiological characteristics were analyzed using descriptive statistics. Furthermore, factors associated with delayed care-seeking and diagnosis among imported malaria cases were identified using multivariate logistic ***: Overall, 11.81% and 30.08% of imported malaria cases had delays in seeking care and diagnosis, respectively. During the study period, there was a decreasing trend in the proportion of imported malaria cases with delayed care-seeking (χ^(2) = 36.099,P < 0.001) and diagnosis (χ^(2) = 11.395,P = 0.001). In multivariate analysis, independent risk factors associated with delayed care-seeking include PLADs (Guangxi as reference), consultations in high-level facilities for the first medical visit, infections with non-Plasmodium falciparum species, and older age. However, PLADs (Guangxi as reference), the purpose of traveling (labour as reference), and infections with non-P. falciparum species increased the risk of delayed diagnosis. Delayed care-seeking (adjusted odds ratio: 1.79,P = 0.001) and diagnosis (adjusted odds ratio: 1.62,P = 0.004) were risk factors for severe disease ***: Based on this study’s findings, we strongly advocate for improved access to quality healthcare to reduce the rate of misdiagnosis at the first visit. Infections caused by non-P. falciparum species should be highlighted, and more sensitive and specific point-of-care detection methods for non-P. falciparum species should be developed and implemented. In addition, educati

关键词： malaria Delayed care-seeking Delayed diagnosis Imported malaria Prevention Re-establishment China Plasmodium falciparum

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World’s first malaria vaccine and its significance to malaria control in Africa

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Asian Pacific Journal of Tropical Medicine 2022年第2期15卷 49-52页

作者： Eunice A Owino The University of Nairobi P.O BOX 30197-00100NairobiKenya

In October 2021,the World Health Organization(WHO)endorsed the first malaria vaccine,as a complementary tool for widespread use among children in at-risk areas;sub-Saharan Africa and in other regions with moderate to high Plasmodium falciparum malaria transmission,including our country,Kenya[1].The breakthrough followed three decades of clinical trials in seven African countries including Ghana,Kenya and Malawi,where a large-scale pilot programme coordinated by the WHO since 2019,administered 2.3 million doses of Mosquirix,the malaria vaccine,to infants[1].

关键词： malaria doses breakthrough

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Secondary analysis of malaria rapid diagnostic tests from rounds 5–8 of WHO product testing with a focus on false-negative results

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Military Medical Research 2022年第3期9卷 379-381页

作者： Biao Xu Bo Tu Fang Chu Mohamed Jalloh Jin-Song Mu Jun-Jie Zheng Wei-Wei Chen Chinese Military Medical Expert Group in Sierra Leone the Fifth Medical Center of Chinese PLA General HospitalBeijing100039China The 34Th Military Hospital Wilberforce BarracksFreetownSierra Leone

Despite the widespread use of malaria rapid diagnostic test(RDT)in clinical practice,there are a lot of *** conducted a secondary analysis of 129 malaria RDT data from rounds 5–8 of the World Health Organization(WHO)product testing summary and discuss the causes of false-negative(FN)results with a focus on low parasite density,improper RDT storage,operation and interpretation,and Plasmodium falciparum with a pfhrp2/3 gene *** results demonstrated that the malaria RDTs currently commercially available might cause FN results in practice.

关键词： malaria Rapid diagnostic tests False-negative results WHO product testing

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