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Fonzo M, Bertoncello C, Tudor L, Miccolis L, Serpentino M, Petta D, Amoruso I, Baldovin T, Trevisan A. Do we protect ourselves against West Nile Virus? A systematic review on knowledge, attitudes, and practices and their determinants. J Infect Public Health 2024; 17:868-880. [PMID: 38555655 DOI: 10.1016/j.jiph.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/01/2024] [Accepted: 03/11/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND West Nile virus (WNV) is a mosquito-borne flavivirus. In humans, 80% of infections are asymptomatic, while approximately 20% experience influenza-like symptoms. Fewer than 1% develop the neuroinvasive form which can lead to encephalitis, meningitis, acute flaccid paralysis, and even death. The global spread of the virus to areas where it was not previously present has become a growing concern. Since the 2000 s, there have been numerous outbreaks affecting local and travelling populations worldwide. Given the lack of a vaccine, preventative measures are primarily focused on surveillance, vector control, and the use of personal protective behaviours (PPBs). The importance of PPBs is central to public health recommendations. However, translating these messages into coherent action by the public can prove challenging, as the uptake of such measures is inevitably influenced by socio-economic factors, awareness, knowledge, and risk perception. METHODS A PRISMA-based systematic research was conducted on EMBASE, PubMed/MEDLINE, and Web of Science databases. PROSPERO registration number CRD42023459714. Quality of studies included in the final stage was evaluated using the Critical Appraisal Checklist for Cross-Sectional Study (CEBMa). RESULTS 2963 articles were screened, and 17 studies were included in the final round. Out of these, six were deemed of high quality, ten were of medium quality, and one was of low quality. In almost all studies considered, both awareness and knowledge of WNV transmission were above 90%, while concern about WNV ranged from 50% to 80%. Concern about the safety of repellents, either with or without DEET, ranged from 27% to 70%. The percentage of people actually using repellents ranged from 30% to 75%, with the lowest usage reported among individuals over 60 years old (29%) and pregnant women (33%), and the highest among students aged 9-11 (75%). Concern for West Nile Virus (WNV) was consistently linked to an increase in taking preventative measures, including the use of repellents, by two to four times across studies. The school-based intervention was effective in increasing the practice of removing standing water (AOR=4.6; 2.7-8.0) and wearing long clothing (AOR=2.4; 95%CI: 1.3-4.3), but did not have a significant impact on the use of repellents. CONCLUSIONS The present systematic review provides an overview of the knowledge, attitudes, and practices (KAP) of WNV and their determinants. While concern about West Nile Virus (WNV) and its effects can be a significant motivator, it is important to promote evidence-based personal protective behaviours (PPBs) to counter unwarranted fears. For example, the use of repellents among the most vulnerable age groups. Given the geographical expansion of WNV, it is necessary to target the entire population preventively, including those who are difficult to reach and areas not yet endemic. The findings of this investigation could have significant implications for public health and support well-informed and effective communication strategies and interventions.
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Affiliation(s)
- Marco Fonzo
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Chiara Bertoncello
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy.
| | - Liliana Tudor
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Liana Miccolis
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Michele Serpentino
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Daniele Petta
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Irene Amoruso
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Tatjana Baldovin
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Andrea Trevisan
- Hygiene and Public Health Unit, Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy
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Fiacre L, Nougairède A, Migné C, Bayet M, Cochin M, Dumarest M, Helle T, Exbrayat A, Pagès N, Vitour D, Richardson JP, Failloux AB, Vazeille M, Albina E, Lecollinet S, Gonzalez G. Different viral genes modulate virulence in model mammal hosts and Culex pipiens vector competence in Mediterranean basin lineage 1 West Nile virus strains. Front Microbiol 2024; 14:1324069. [PMID: 38298539 PMCID: PMC10828019 DOI: 10.3389/fmicb.2023.1324069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024] Open
Abstract
West Nile virus (WNV) is a single-stranded positive-sense RNA virus (+ssRNA) belonging to the genus Orthoflavivirus. Its enzootic cycle involves mosquito vectors, mainly Culex, and wild birds as reservoir hosts, while mammals, such as humans and equids, are incidental dead-end hosts. It was first discovered in 1934 in Uganda, and since 1999 has been responsible for frequent outbreaks in humans, horses and wild birds, mostly in America and in Europe. Virus spread, as well as outbreak severity, can be influenced by many ecological factors, such as reservoir host availability, biodiversity, movements and competence, mosquito abundance, distribution and vector competence, by environmental factors such as temperature, land use and precipitation, as well as by virus genetic factors influencing virulence or transmission. Former studies have investigated WNV factors of virulence, but few have compared viral genetic determinants of pathogenicity in different host species, and even fewer have considered the genetic drivers of virus invasiveness and excretion in Culex vector. In this study, we characterized WNV genetic factors implicated in the difference in virulence observed in two lineage 1 WNV strains from the Mediterranean Basin, the first isolated during a significant outbreak reported in Israel in 1998, and the second from a milder outbreak in Italy in 2008. We used an innovative and powerful reverse genetic tool, e.g., ISA (infectious subgenomic amplicons) to generate chimeras between Israel 1998 and Italy 2008 strains, focusing on non-structural (NS) proteins and the 3'UTR non-coding region. We analyzed the replication of these chimeras and their progenitors in mammals, in BALB/cByJ mice, and vector competence in Culex (Cx.) pipiens mosquitoes. Results obtained in BALB/cByJ mice suggest a role of the NS2B/NS3/NS4B/NS5 genomic region in viral attenuation in mammals, while NS4B/NS5/3'UTR regions are important in Cx. pipiens infection and possibly in vector competence.
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Affiliation(s)
- Lise Fiacre
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
- UMR ASTRE, CIRAD, Petit-Bourg, Guadeloupe
| | - Antoine Nougairède
- Unité Des Virus Emergents (UVE), Aix-Marseille Université, IRD 190, INSERM 1207, Marseille, France
| | - Camille Migné
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
| | | | - Maxime Cochin
- Unité Des Virus Emergents (UVE), Aix-Marseille Université, IRD 190, INSERM 1207, Marseille, France
| | - Marine Dumarest
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Teheipuaura Helle
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Antoni Exbrayat
- ASTRE, CIRAD, INRAe, Université de Montpellier, Montpellier, France
| | | | - Damien Vitour
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Jennifer P. Richardson
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Anna-Bella Failloux
- Institut Pasteur, Université Paris Cité, Arboviruses and Insects Vectors, Paris, France
| | - Marie Vazeille
- Institut Pasteur, Université Paris Cité, Arboviruses and Insects Vectors, Paris, France
| | - Emmanuel Albina
- ASTRE, CIRAD, INRAe, Université de Montpellier, Montpellier, France
| | | | - Gaëlle Gonzalez
- UMR VIRO, ANSES, ENVA, INRAE Virologie, Laboratoire de Santé Animale, Maisons-Alfort, France
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Jiang S, Xing D, Li C, Dong Y, Zhao T, Guo X. Replication and transmission of West Nile virus in simulated overwintering adults of Culex pipiens pallens (Diptera: Culicidae) in China. Acta Trop 2023; 237:106720. [DOI: 10.1016/j.actatropica.2022.106720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/19/2022]
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Abstract
Purpose of Review West Nile virus (WNV) is an arbovirus transmitted by mosquitos of the genus Culex. Manifestations of WNV infection range from asymptomatic to devastating neuroinvasive disease leading to flaccid paralysis and death. This review examines WNV epidemiology and ecology, with an emphasis on travel-associated infection. Recent Findings WNV is widespread, including North America and Europe, where its range has expanded in the past decade. Rising temperatures in temperate regions are predicted to lead to an increased abundance of Culex mosquitoes and an increase in their ability to transmit WNV. Although the epidemiologic patterns of WNV appear variable, its geographic distribution most certainly will continue to increase. Travelers are at risk for WNV infection and its complications. Literature review identified 39 cases of documented travel-related WNV disease, the majority of which resulted in adverse outcomes, such as neuroinvasive disease, prolonged recovery period, or death. Summary The prediction of WNV risk is challenging due to the complex interactions of vector, pathogen, host, and environment. Travelers planning to visit endemic areas should be advised regarding WNV risk and mosquito bite prevention. Evaluation of ill travelers with compatible symptoms should consider the diagnosis of WNV for those visiting in endemic areas as well as for those returning from destinations with known WNV circulation.
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Fang Y, Khater EIM, Xue JB, Ghallab EHS, Li YY, Jiang TG, Li SZ. Epidemiology of Mosquito-Borne Viruses in Egypt: A Systematic Review. Viruses 2022; 14:v14071577. [PMID: 35891557 PMCID: PMC9322113 DOI: 10.3390/v14071577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 12/21/2022] Open
Abstract
There are at least five common mosquito-borne viruses (MBVs) recorded in Egypt, including dengue virus (DENV), Rift Valley fever virus (RVFV), West Nile virus (WNV), Chikungunya virus, and Sindbis virus. Unexpected outbreaks caused by MBVs reflect the deficiencies of the MBV surveillance system in Egypt. This systematic review characterized the epidemiology of MBV prevalence in Egypt. Human, animal, and vector prevalence studies on MBVs in Egypt were retrieved from Web of Science, PubMed, and Bing Scholar, and 33 eligible studies were included for further analyses. The monophyletic characterization of the RVFV and WNV strains found in Egypt, which spans about half a century, suggests that both RVFV and WNV are widely transmitted in this nation. Moreover, the seropositive rates of DENV and WNV in hosts were on the rise in recent years, and spillover events of DENV and WNV to other countries from Egypt have been recorded. The common drawback for surveillance of MBVs in Egypt is the lack of seroprevalence studies on MBVs, especially in this century. It is necessary to evaluate endemic transmission risk, establish an early warning system for MBVs, and develop a sound joint system for medical care and public health for managing MBVs in Egypt.
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Affiliation(s)
- Yuan Fang
- NHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, China; (Y.F.); (J.-B.X.); (Y.-Y.L.)
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
| | - Emad I. M. Khater
- Department of Entomology, Faculty of Science, Ain Shams University, Abbasiah, Cairo 11566, Egypt; (E.I.M.K.); (E.H.S.G.)
| | - Jing-Bo Xue
- NHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, China; (Y.F.); (J.-B.X.); (Y.-Y.L.)
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
| | - Enas H. S. Ghallab
- Department of Entomology, Faculty of Science, Ain Shams University, Abbasiah, Cairo 11566, Egypt; (E.I.M.K.); (E.H.S.G.)
| | - Yuan-Yuan Li
- NHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, China; (Y.F.); (J.-B.X.); (Y.-Y.L.)
| | - Tian-Ge Jiang
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
| | - Shi-Zhu Li
- NHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), WHO Collaborating Center for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, China; (Y.F.); (J.-B.X.); (Y.-Y.L.)
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- Correspondence:
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Zhang YM, Guo XX, Jiang SF, Li CX, Xing D, Zhang HD, Dong YD, Zhao TY. The Potential Vector Competence and Overwintering of West Nile Virus in Vector Aedes Albopictus in China. Front Microbiol 2022; 13:888751. [PMID: 35722287 PMCID: PMC9201683 DOI: 10.3389/fmicb.2022.888751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/20/2022] [Indexed: 11/18/2022] Open
Abstract
West Nile virus (WNV) is an arbovirus, which causes widespread zoonotic disease globally. In China, it was first isolated in Jiashi County, Kashgar Region, Xinjiang in 2011. Determining the vector competence of WNV infection has important implications for the control of disease outbreaks. Four geographical strains of Aedes Albopictus (Ae. Albopictus) in China were allowed to feed on artificial infectious blood meal with WNV to determine the infection and transmission rate. The results indicated that four strains of Ae. Albopictus mosquitoes could infect and transmit WNV to 1- to 3-day-old Leghorn chickens. The infection rates of different strains were ranged from 16.7 to 60.0% and were statistically different (χ2 = 12.81, p < 0.05). The highest infection rate was obtained from the Shanghai strain (60.0%). The transmission rates of Ae. Albopictus Shanghai, Guangzhou, Beijing, and Chengdu strains were 28.6, 15.2, 13.3, and 6.7%, respectively. Furtherly, the results reveal that Ae. Albopictus Beijing strain infected orally can transmit WNV transovarially even the eggs are induced diapausing. The study confirmed that WNV could survive in the diapause eggs of Ae. Albopictus and could be transmitted to progeny after diapause termination. This is of great significance for clarifying that the WNV maintains its natural circulation in harsh environments through inter-epidemic seasons.
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Affiliation(s)
- Ying-Mei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiao-Xia Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shu-Fang Jiang
- First Medical Center, Chinese People's Liberations Army (PLA) General Hospital, Beijing, China
| | - Chun-Xiao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Dan Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Heng-Duan Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yan-de Dong
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tong-Yan Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
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Zhang F, Chase-Topping M, Guo CG, Woolhouse MEJ. Predictors of human-infective RNA virus discovery in the United States, China, and Africa, an ecological study. eLife 2022; 11:e72123. [PMID: 35666108 PMCID: PMC9278958 DOI: 10.7554/elife.72123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Background The variation in the pathogen type as well as the spatial heterogeneity of predictors make the generality of any associations with pathogen discovery debatable. Our previous work confirmed that the association of a group of predictors differed across different types of RNA viruses, yet there have been no previous comparisons of the specific predictors for RNA virus discovery in different regions. The aim of the current study was to close the gap by investigating whether predictors of discovery rates within three regions-the United States, China, and Africa-differ from one another and from those at the global level. Methods Based on a comprehensive list of human-infective RNA viruses, we collated published data on first discovery of each species in each region. We used a Poisson boosted regression tree (BRT) model to examine the relationship between virus discovery and 33 predictors representing climate, socio-economics, land use, and biodiversity across each region separately. The discovery probability in three regions in 2010-2019 was mapped using the fitted models and historical predictors. Results The numbers of human-infective virus species discovered in the United States, China, and Africa up to 2019 were 95, 80, and 107 respectively, with China lagging behind the other two regions. In each region, discoveries were clustered in hotspots. BRT modelling suggested that in all three regions RNA virus discovery was better predicted by land use and socio-economic variables than climatic variables and biodiversity, although the relative importance of these predictors varied by region. Map of virus discovery probability in 2010-2019 indicated several new hotspots outside historical high-risk areas. Most new virus species since 2010 in each region (6/6 in the United States, 19/19 in China, 12/19 in Africa) were discovered in high-risk areas as predicted by our model. Conclusions The drivers of spatiotemporal variation in virus discovery rates vary in different regions of the world. Within regions virus discovery is driven mainly by land-use and socio-economic variables; climate and biodiversity variables are consistently less important predictors than at a global scale. Potential new discovery hotspots in 2010-2019 are identified. Results from the study could guide active surveillance for new human-infective viruses in local high-risk areas. Funding FFZ is funded by the Darwin Trust of Edinburgh (https://darwintrust.bio.ed.ac.uk/). MEJW has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 874735 (VEO) (https://www.veo-europe.eu/).
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Affiliation(s)
- Feifei Zhang
- Usher Institute, University of EdinburghEdinburghUnited Kingdom
| | - Margo Chase-Topping
- Usher Institute, University of EdinburghEdinburghUnited Kingdom
- Roslin Institute and Royal (Dick) School of Veterinary Studies, University of EdinburghEdinburghUnited Kingdom
| | - Chuan-Guo Guo
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong KongHong KongChina
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Li H, Chen Y, Machalaba CC, Tang H, Chmura AA, Fielder MD, Daszak P. Wild animal and zoonotic disease risk management and regulation in China: Examining gaps and One Health opportunities in scope, mandates, and monitoring systems. One Health 2021; 13:100301. [PMID: 34401458 PMCID: PMC8358700 DOI: 10.1016/j.onehlt.2021.100301] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 01/19/2023] Open
Abstract
Emerging diseases of zoonotic origin such as COVID-19 are a continuing public health threat in China that lead to a significant socioeconomic burden. This study reviewed the current laws and regulations, government reports and policy documents, and existing literature on zoonotic disease preparedness and prevention across the forestry, agriculture, and public health authorities in China, to articulate the current landscape of potential risks, existing mandates, and gaps. A total of 55 known zoonotic diseases (59 pathogens) are routinely monitored under a multi-sectoral system among humans and domestic and wild animals in China. These diseases have been detected in wild mammals, birds, reptiles, amphibians, and fish or other aquatic animals, the majority of which are transmitted between humans and animals via direct or indirect contact and vectors. However, this current monitoring system covers a limited scope of disease threats and animal host species, warranting expanded review for sources of disease and pathogen with zoonotic potential. In addition, the governance of wild animal protection and utilization and limited knowledge about wild animal trade value chains present challenges for zoonotic disease risk assessment and monitoring, and affect the completeness of mandates and enforcement. A coordinated and collaborative mechanism among different departments is required for the effective monitoring and management of disease emergence and transmission risks in the animal value chains. Moreover, pathogen surveillance among wild animal hosts and human populations outside of the routine monitoring system will fill the data gaps and improve our understanding of future emerging zoonotic threats to achieve disease prevention. The findings and recommendations will advance One Health collaboration across government and non-government stakeholders to optimize monitoring and surveillance, risk management, and emergency responses to known and novel zoonotic threats, and support COVID-19 recovery efforts.
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Affiliation(s)
- Hongying Li
- EcoHealth Alliance, New York, NY, United States of America
- School of Life Sciences, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom
| | - Yufei Chen
- School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | | | - Hao Tang
- School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA, Australia
| | | | - Mark D. Fielder
- School of Life Sciences, Faculty of Science, Engineering and Computing, Kingston University, London, United Kingdom
| | - Peter Daszak
- EcoHealth Alliance, New York, NY, United States of America
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Salgado R, Hawks SA, Frere F, Vázquez A, Huang CYH, Duggal NK. West Nile Virus Vaccination Protects against Usutu Virus Disease in Mice. Viruses 2021; 13:v13122352. [PMID: 34960621 PMCID: PMC8704473 DOI: 10.3390/v13122352] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
Abstract
West Nile virus (WNV) and Usutu virus (USUV) are mosquito-borne flaviviruses that can cause neuroinvasive disease in humans. WNV and USUV circulate in both Africa and Europe and are closely related. Due to antigenic similarity, WNV-specific antibodies and USUV-specific antibodies have the potential to bind heterologous viruses; however, it is unclear whether this interaction may offer protection against infection. To investigate how prior WNV exposure would influence USUV infection, we used an attenuated WNV vaccine that contains the surface proteins of WNV in the backbone of a dengue virus 2 vaccine strain and protects against WNV disease. We hypothesized that vaccination with this attenuated WNV vaccine would protect against USUV infection. Neutralizing responses against WNV and USUV were measured in vitro using sera following vaccination. Sera from vaccinated CD-1 and Ifnar1-/- mice cross-neutralized with WNV and USUV. All mice were then subsequently challenged with an African or European USUV strain. In CD-1 mice, there was no difference in USUV titers between vaccinated and mock-vaccinated mice. However, in the Ifnar1-/- model, vaccinated mice had significantly higher survival rates and significantly lower USUV viremia compared to mock-vaccinated mice. Our results indicate that exposure to an attenuated form of WNV protects against severe USUV disease in mice and elicits a neutralizing response to both WNV and USUV. Future studies will investigate the immune mechanisms responsible for the protection against USUV infection induced by WNV vaccination, providing critical insight that will be essential for USUV and WNV vaccine development.
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Affiliation(s)
- Rebecca Salgado
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (R.S.); (S.A.H.); (F.F.)
| | - Seth A. Hawks
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (R.S.); (S.A.H.); (F.F.)
| | - Francesca Frere
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (R.S.); (S.A.H.); (F.F.)
| | - Ana Vázquez
- National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), CIBERESP, CIBER Epidemiology and Public Health, 28220 Madrid, Spain;
| | - Claire Y.-H. Huang
- Arboviral Diseases Branch, Centers for Disease Control and Prevention, Division of Vector-Borne Diseases, Fort Collins, CO 80521, USA;
| | - Nisha K. Duggal
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (R.S.); (S.A.H.); (F.F.)
- Correspondence: ; Tel.: +1-540-231-6705
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Zhang Y, Lei W, Wang Y, Sui H, Liu B, Li F, He Y, Li Z, Fu S, Wang L, Xu L, Mahe M, Gao Z, Mamutijiang T, Lv Z, Xiang N, Zhou L, Ni D, Liang G, Li Q, Wang H, Feng Z. Surveillance of West Nile virus infection in Kashgar Region, Xinjiang, China, 2013-2016. Sci Rep 2021; 11:14010. [PMID: 34234184 PMCID: PMC8263600 DOI: 10.1038/s41598-021-93309-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 05/07/2021] [Indexed: 11/25/2022] Open
Abstract
West Nile virus (WNV) was first isolated in mainland China from mosquitoes in Jiashi County, Kashgar Region, Xinjiang in 2011, following local outbreaks of viral meningitis and encephalitis caused by WNV. To elaborate the epidemiological characteristics of the WNV, surveillance of WNV infection in Kashgar Region, Xinjiang from 2013 to 2016 were carried out. Blood and CSF samples from surveillance human cases, blood of domestic chicken, cattle, sheep and mosquitoes in Kashgar Region were collected and detected. There were human 65 WNV Immunoglobulin M (IgM) antibody positive cases by ELISA screening, 6 confirmed WNV cases by the plaque reduction neutralization test (PRNT) screening. These cases occurred mainly concentrated in August to September of each year, and most of them were males. WNV-neutralizing antibodies were detected in both chickens and sheep, and the positive rates of neutralizing antibodies were 15.5% and 1.78%, respectively. A total of 15,637 mosquitoes were collected in 2013–2016, with Culex pipiens as the dominant mosquito species. Four and 1 WNV-positive mosquito pools were detected by RT-qPCR in 2013 and 2016 respectively. From these data, we can confirm that Jiashi County may be a natural epidemic foci of WNV disease, the trend highlights the routine virology surveillance in WNV surveillance cases, mosquitoes and avian should be maintained and enhanced to provide to prediction and early warning of outbreak an epidemic of WNV in China.
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Affiliation(s)
- Yanping Zhang
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Wenwen Lei
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Yali Wang
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Haitian Sui
- China National Biotec Group Company Limited, Beijing, 100024, People's Republic of China
| | - Bo Liu
- Center for Drug Evaluation of the China National Medical Products Administration, Beijing, 100022, People's Republic of China
| | - Fan Li
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Ying He
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Zhaoxia Li
- Kashgar Center for Disease Control and Prevention of Xinjiang, Kashgar, 844000, People's Republic of China
| | - Shihong Fu
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Lu Wang
- Kashgar Center for Disease Control and Prevention of Xinjiang, Kashgar, 844000, People's Republic of China
| | - Limin Xu
- Kashgar Center for Disease Control and Prevention of Xinjiang, Kashgar, 844000, People's Republic of China
| | - Muti Mahe
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi, 830001, People's Republic of China
| | - Zhenguo Gao
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi, 830001, People's Republic of China
| | - Tuerxun Mamutijiang
- Jiashi Center for Disease Control and Prevention, Jiashi, 844300, People's Republic of China
| | - Zhi Lv
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Nijuan Xiang
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Lei Zhou
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Daxin Ni
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Guodong Liang
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Qun Li
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China
| | - Huanyu Wang
- Department of Viral Encephalitis, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China.
| | - Zijian Feng
- Chinese Center for Disease Control and Prevention, Beijing, 102206, People's Republic of China.
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11
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Chowdhury P, Khan SA. Global emergence of West Nile virus: Threat & preparedness in special perspective to India. Indian J Med Res 2021; 154:36-50. [PMID: 34782529 PMCID: PMC8715705 DOI: 10.4103/ijmr.ijmr_642_19] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 11/18/2022] Open
Abstract
West Nile virus (WNV) is a mosquito-borne single-stranded RNA neurotropic virus within the family Flaviviridae. The virus was first reported in the West Nile province of Uganda in 1937. Since then, sporadic cases have been reported until the last two decades when it has emerged as a threat to public health. The emergence of WNV with more severity in recent times is intriguing. Considering this phenomenon, the WNV-affected areas of the world were distinguished as old versus new in a depicted world map. The present review showcases the historical and epidemiological perspectives of the virus, genetic diversity of prevailing lineages and clinical spectrum associated with its infection. Emergence of the virus has been discussed in special context to India because of co-circulation of different WNV lineages/strains along with other flaviviruses. Recent laboratory diagnostics, vaccine development and clinical management associated with WNV infection have also been discussed. Further, the research gaps, especially in context to India have been highlighted that may have a pivotal role in combating the spread of WNV.
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Affiliation(s)
- Pritom Chowdhury
- Department of Biotechnology, Tocklai Tea Research Institute, Tea Research Association, Jorhat, Assam, India
| | - Siraj Ahmed Khan
- Division of Medical Entomology, Arbovirology & Rickettsial Diseases, ICMR-Regional Medical Research Centre, Northeast Region, Dibrugarh, Assam, India
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12
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Wu JY, Li JJ, Wang DF, Wei YR, Meng XX, Tuerxun G, Bolati H, Liu KK, Muhan M, Shahan A, Dilixiati D, Yang XY. Seroprevalence of Five Zoonotic Pathogens in Wild Ruminants in Xinjiang, Northwest China. Vector Borne Zoonotic Dis 2020; 20:882-887. [PMID: 32936059 DOI: 10.1089/vbz.2020.2630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Wild ruminants are at risk for zoonotic pathogen infection as a result of interactions with domestic animals and humans. One way to assess the level of a wild ruminant disease in a population is to determine the seroprevalence of the pathogen of interest. The objective of this study was to determine the seroprevalence of five zoonotic pathogens in wild ruminants in Xinjiang, Northwest China. In 2009 and 2011-2015, 258 wild ruminant sera samples were collected from various species. Samples were obtained from 30 Siberian ibexes, 94 goitered gazelles, 6 Tibetan antelopes, 32 argali sheep, 16 roe deer, 20 blue sheep, 56 red deer, and 4 wild yaks, in 10 regions of Xinjiang. Samples were tested using antibodies against Brucella spp., Chlamydophila abortus, Coxiella burnetii, Toxoplasma gondii, and West Nile virus. Seropositivity was detected for all five pathogens, with detection rates of Brucella spp., C. abortus, C. burnetii, T. gondii, and West Nile virus of 2.3% (95% confidence interval [CI], 0.5-4.2%), 6.2% (95% CI, 3.3-9.1%), 7.8% (95% CI, 4.5-11.0%), 2.3% (95% CI, 0.5-4.2%), and 0.8% (95% CI, 0-1.8%), respectively. The level of pathogens differed for different species and different regions. The results indicate that seropositivity to zoonotic pathogens is common among wild ruminants in Xinjiang, Northwest China, with C. burnetii and C. abortus detected at the highest levels. This study provides a baseline for future assessment of spillover events.
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Affiliation(s)
- Jian-Yong Wu
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Jian-Jun Li
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Deng-Feng Wang
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Yu-Rong Wei
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Xiao-Xiao Meng
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Gunuer Tuerxun
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Hongduzi Bolati
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Kang-Kang Liu
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Masha Muhan
- Wildlife Focus Disease Monitoring Station of Xinjiang, Urumqi, China
| | | | | | - Xue-Yun Yang
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
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13
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Guo Y, Wang H, Xu S, Zhou H, Zhou C, Fu S, Cheng M, Li F, Deng Y, Li X, Wang H, Qin CF. Recovery and Genetic Characterization of a West Nile Virus Isolate from China. Virol Sin 2020; 36:113-121. [PMID: 32632819 DOI: 10.1007/s12250-020-00246-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 05/25/2020] [Indexed: 11/27/2022] Open
Abstract
West Nile virus (WNV) is an important neurotropic flavivirus that is widely distributed globally. WNV strain XJ11129 was first isolated in Xinjiang, China, and its genetic and biological characteristics remain largely unknown. In this study, phylogenetic and sequence analyses revealed that XJ11129 belongs to lineage 1a and shares high genetic identity with the highly pathogenic strain NY99. Then, the full-length genomic cDNA of XJ11129 was amplified and assembled using a modified Gibson assembly (GA) method. The virus (named rXJ11129) was successfully rescued in days following this method. Compared with other wild-type WNV isolates, rXJ11129 exhibited virulence indistinguishable from that of the NY99 strain in vivo. In summary, the genomic and virulence phenotypes of rXJ11129 were characterized in vivo and in vitro, and these data will improve the understanding of the spread and pathogenesis of this reemerging virus.
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Affiliation(s)
- Yan Guo
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, 100071, China
| | - Hongjiang Wang
- PLA Strategic Support Force Characteristic Medical Center, Beijing, 100071, China
| | - Songtao Xu
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Hangyu Zhou
- Suzhou Institute of System Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Suzhou, 215000, China
| | - Chao Zhou
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease, Nanjing Medical University, Nanjing, 211166, China
| | - Shihong Fu
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Mengli Cheng
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, 100071, China
| | - Fan Li
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, China
| | - Yongqiang Deng
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, 100071, China
| | - Xiaofeng Li
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, 100071, China
| | - Huanyu Wang
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China.
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, 102206, China.
| | - Cheng-Feng Qin
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, 100071, China.
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14
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Wang Y, Cheng P, Jiao B, Song X, Wang H, Wang H, Wang H, Huang X, Liu H, Gong M. Investigation of mosquito larval habitats and insecticide resistance in an area with a high incidence of mosquito-borne diseases in Jining, Shandong Province. PLoS One 2020; 15:e0229764. [PMID: 32130263 PMCID: PMC7055894 DOI: 10.1371/journal.pone.0229764] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND To investigate mosquito larval habitats and resistance to common insecticides in areas with high incidence rates of mosquito-borne diseases in Jining, Shandong Province, and to provide a scientific basis for the future prevention and control of mosquito-borne diseases and the rational use of insecticides. METHODS AND RESULTS From June to September 2018, mosquito habitat characteristics and species compositions in Jintun town were studied through a cross-sectional survey. Larvae and pupae were collected in different habitats using the standard dipping technique. A total of 7,815 mosquitoes, comprising 7 species from 4 genera, were collected. Among them, Culex pipiens pallens (n = 5,336, 68.28%) was the local dominant species and found in all four habitats (rice paddies, irrigation channels, water containers, drainage ditches). There were 1,708 Cx. tritaeniorhynchus (21.85%), 399 Anopheles sinensis (5.11%), 213 Armigeres subalbatus (2.72%), 124 Aedes albopictus (1.59%), and 35 other (Cx. bitaeniorhynchus and Cx. halifaxii) (0.45%) mosquito samples collected. Spearman correlation analysis was employed to evaluate the relationship between larval density and the physicochemical characteristics of the breeding habitat. It was found that the larval density of Cx. tritaeniorhynchus correlated positively with water depth (r = 0.927 p = 0.003), the larval density of An. sinensis correlated positively with dissolved oxygen (DO) (r = 0.775 p = 0.041) and the larval density of Cx. p. pallens correlated positively with ammonia nitrogen (r = 0.527 p = 0.002). Resistance bioassays were carried out on the dominant populations of Cx. p. pallens: mosquitoes presented very high resistance to cypermethrin and deltamethrin, moderate resistance to dichlorvos (DDVP), and low resistance to Bacillus thuringiensis israelensis (Bti), with decreased susceptibility to propoxur. CONCLUSION We showed that mosquito species vary across habitat type and that the mosquito larval density correlated positively with certain physicochemical characteristics in different habitats. In addition, Cx. p. pallens developed different levels of resistance to five insecticides. Vector monitoring should be strengthened after an epidemic, and further research should be conducted to scientifically prevent and kill mosquitoes.
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Affiliation(s)
- Yang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Peng Cheng
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Boyan Jiao
- Jining Center for Disease Control and Prevention, Jining, Shandong Province, China
| | - Xiao Song
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Haiyang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan,
Shandong Province, China
| | - Haifang Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Huaiwei Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Xiaodan Huang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Hongmei Liu
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
| | - Maoqing Gong
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, Shandong Province, China
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15
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Maeki T, Tajima S, Ikeda M, Kato F, Taniguchi S, Nakayama E, Takasaki T, Lim CK, Saijo M. Analysis of cross-reactivity between flaviviruses with sera of patients with Japanese encephalitis showed the importance of neutralization tests for the diagnosis of Japanese encephalitis. J Infect Chemother 2019; 25:786-790. [PMID: 31105002 DOI: 10.1016/j.jiac.2019.04.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/23/2019] [Accepted: 04/09/2019] [Indexed: 12/21/2022]
Abstract
Japanese encephalitis (JE) is one of the most important viral encephalitis in Asia. JE is caused by the Japanese encephalitis virus (JEV), which belongs to the genus Flavivirus, family Flaviviridae. The diagnosis of JE is usually based on serological assays, and it has been reported that cross-reactivity between flaviviruses has complicated the interpretations of results from serological assays. Therefore, analysis of the cross-reactivity is an important subject for serological diagnosis of JE and other diseases caused by flaviviruses. In the present study, the cross-reactivity of the sera of patients with JE to other flaviviruses was analyzed using enzyme-linked immunosorbent assay (ELISA) and neutralization tests. Sixteen serum samples were collected from patients with JE and were tested for: i) IgM antibody against West Nile virus (WNV), dengue virus (DENV), zika virus (ZIKV), and tick-borne encephalitis virus (TBEV) using IgM-ELISA, ii) IgG antibody against DENV and TBEV using IgG-ELISA, and iii) neutralization tests with DENV 1-4, ZIKV, TBEV, and WNV. Out of the 16 samples tested using ELISA, 11 and 14 samples were positive for IgM and IgG, respectively, against at least one of the other flaviviruses. In neutralization tests, neutralizing potency against DENV, ZIKV, or TBEV was not detected in any samples. Although 13 samples showed neutralizing potency against WNV, their neutralizing antibody titers were equal to or less than one-eighth of those against JEV. These results show that neutralization tests are more specific than ELISA, indicating the importance of the neutralization tests in the diagnosis of JE.
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Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan.
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Makiko Ikeda
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Tomohiko Takasaki
- Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
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16
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Wang HY, Wu SQ, Jiang L, Xiao RH, Li T, Mei L, Lv JZ, Liu JJ, Lin XM, Han XQ. Establishment and optimization of a liquid bead array for the simultaneous detection of ten insect-borne pathogens. Parasit Vectors 2018; 11:442. [PMID: 30064470 PMCID: PMC6069843 DOI: 10.1186/s13071-018-2996-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 07/05/2018] [Indexed: 12/26/2022] Open
Abstract
Background Insect-borne diseases could induce severe symptoms in human and clinical signs in animals, such as febrility, erythra, arthralgia and hemorrhagic fever, and cause significant economic losses and pose public health threat all over the world. The significant advantages of Luminex xMAP technology are high-throughput, high parallel and automation. This study aimed to establish a liquid bead array based on Luminex xMAP technology that was able to simultaneously detect multiple insect-borne pathogens. Methods Specific probes and primers to detect the nucleic acid of 10 insect-borne pathogens were designed. Probes were coupled with fluorescent carboxylated microspheres. The parameters of the system were optimized, including ratio of forward/reverse primers (1:2), hybridization temperature (50 °C) and duration (30 min) and quantity of PCR product (2 μl). The sensitivity and specificity of the system were also evaluated. Moreover mixed nucleic acid of 10 insect-borne pathogens, including Bluetongue virus, Epizootic hemorrhagic disease virus of deer, Coxiella burnetii, African swine fever virus, West Nile fever virus, Borrelia burgdorferi, vesicular stomatitis virus, Rift Valley fever virus, Ebola virus and Schmalenberg’s disease virus, and 3000 clinical samples were tested for practicability. Results The optimized detection system showed high sensitivity, specificity and reproducibility. Each probe showed specific fluorescence signal intensity without any cross-hybridization for the other insect-borne pathogens tested, which included dengue virus, tick-borne encephalitis virus, Japanese encephalitis virus, Xinjiang hemorrhagic fever virus, spotted fever group rickettsiae, ehrlichiae and chikungunya virus. The limit of detection was 10 copies of target gene. Insect-borne pathogens were successfully detected among the 3000 clinical samples, and the results were consistent with those obtained using gold-standard assays or commercial nucleic acid detection kits. Conclusions This optimized liquid array detection system was high-throughput and highly specific and sensitive in screening of the insect-borne pathogens. It was promising in detection of these pathogens for molecular epidemiological studies. Electronic supplementary material The online version of this article (10.1186/s13071-018-2996-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hui-Yu Wang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Shao-Qiang Wu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Li Jiang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Rong-Hai Xiao
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Ting Li
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Lin Mei
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Ji-Zhou Lv
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Jia-Jia Liu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China
| | - Xiang-Mei Lin
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China.
| | - Xue-Qing Han
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, People's Republic of China.
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17
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Cao L, Fu S, Lu Z, Tang C, Gao X, Li X, Lei W, He Y, Li M, Cao Y, Wang H, Liang G. Detection of West Nile Virus Infection in Viral Encephalitis Cases, China. Vector Borne Zoonotic Dis 2018; 19:45-50. [PMID: 29985780 DOI: 10.1089/vbz.2018.2275] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This study detected West Nile virus (WNV) infection in serum samples of patients clinically diagnosed with viral encephalitis in the Japanese encephalitis virus (JEV) endemic area (seven provinces) and JEV nonendemic area (Xinjiang province) in China from 2011 to 2012. In JEV endemic areas, there were 22 positive cases of WNV immunoglobulin M (IgM) antibody in serum specimens of 65 JEV patients (JEV IgM antibody positive) in the acute phase, whereas WNV IgM antibodies were not detected in serum specimens of 63 non-JEV patients (JEV IgM antibody negative). However, the titer of JEV-neutralizing antibody was four times higher than that of WNV-neutralizing antibody in WNV-IgM-positive serum specimens. Detection was also conducted in serum specimens collected from 12 patients clinically diagnosed as viral encephalitis in Xinjiang; five serum specimens were WNV IgM antibody positive, and there were fourfold differences in WNV-neutralizing antibody titers between convalescent and acute serum. Meanwhile JEV-neutralizing antibody titer was negative or significantly lower than that of WNV-neutralizing antibody in the same specimens. WNV IgM antibodies positive were detected in acute serum specimens of patients clinically diagnosed with JEV infection in JEV-endemic areas, but no WNV neutralization antibodies were detected fourfold greater than that of the corresponding JEV antibodies. Clinical cases of WNV infection were detected in patients clinically diagnosed with viral encephalitis in Xinjiang.
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Affiliation(s)
- Lei Cao
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Shihong Fu
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Zhi Lu
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Chengjun Tang
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xiaoyan Gao
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xiaolong Li
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Wenwen Lei
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Ying He
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Minghua Li
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Yuxi Cao
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Huanyu Wang
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Guodong Liang
- 1 State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,2 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
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18
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Xia H, Wang Y, Atoni E, Zhang B, Yuan Z. Mosquito-Associated Viruses in China. Virol Sin 2018; 33:5-20. [PMID: 29532388 PMCID: PMC5866263 DOI: 10.1007/s12250-018-0002-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 12/05/2017] [Indexed: 10/30/2022] Open
Abstract
Mosquitoes are classified into approximately 3500 species and further grouped into 41 genera. Epidemiologically, they are considered to be among the most important disease vectors in the world and they can harbor a wide variety of viruses. Several mosquito viruses are considered to be of significant medical importance and can cause serious public health issues throughout the world. Such viruses are Japanese encephalitis virus (JEV), dengue virus (DENV), chikungunya virus (CHIKV), and Zika virus (ZIKV). Others are the newly recognized mosquito viruses such as Banna virus (BAV) and Yunnan orbivirus (YNOV) with unclear medical significance. The remaining mosquito viruses are those that naturally infect mosquitoes but do not appear to infect humans or other vertebrates. With the continuous development and improvement of mosquito and mosquito-associated virus surveillance systems in China, many novel mosquito-associated viruses have been discovered in recent years. This review aims to systematically outline the history, characteristics, distribution, and/or current epidemic status of mosquito-associated viruses in China.
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Affiliation(s)
- Han Xia
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Yujuan Wang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Evans Atoni
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Zhang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Zhiming Yuan
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China.
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19
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Metagenomic Virome Analysis of Culex Mosquitoes from Kenya and China. Viruses 2018; 10:v10010030. [PMID: 29329230 PMCID: PMC5795443 DOI: 10.3390/v10010030] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/03/2018] [Accepted: 01/09/2018] [Indexed: 12/20/2022] Open
Abstract
Many blood-feeding arthropods are known vectors of viruses that are a source of unprecedented global health concern. Mosquitoes are an integral part of these arthropod vectors. Advancements in next-generation sequencing and bioinformatics has expanded our knowledge on the richness of viruses harbored by arthropods. In the present study, we applied a metagenomic approach to determine the intercontinental virome diversity of Culex quinquefasciatus and Culex tritaeniorhynchus in Kwale, Kenya and provinces of Hubei and Yunnan in China. Our results showed that viromes from the three locations were strikingly diverse and comprised 30 virus families specific to vertebrates, invertebrates, plants, and protozoa as well as unclassified group of viruses. Though sampled at different times, both Kwale and Hubei mosquito viromes were dominated by vertebrate viruses, in contrast to the Yunnan mosquito virome, which was dominated by insect-specific viruses. However, each virome was unique in terms of virus proportions partly influenced by type of ingested meals (blood, nectar, plant sap, environment substrates). The dominant vertebrate virus family in the Kwale virome was Papillomaviridae (57%) while in Hubei it was Herpesviridae (30%) and the Yunnan virome was dominated by an unclassified viruses group (27%). Given that insect-specific viruses occur naturally in their hosts, they should be the basis for defining the viromes. Hence, the dominant insect-specific viruses in Kwale, Hubei, and Yunnan were Baculoviridae, Nimaviridae and Iflaviridae, respectively. Our study is preliminary but contributes to growing and much needed knowledge, as mosquito viromes could be manipulated to prevent and control pathogenic arboviruses.
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20
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Liang G, Li X, Gao X, Fu S, Wang H, Li M, Lu Z, Zhu W, Lu X, Wang L, Cao Y, He Y, Lei W. Arboviruses and their related infections in China: A comprehensive field and laboratory investigation over the last 3 decades. Rev Med Virol 2017; 28. [PMID: 29210509 DOI: 10.1002/rmv.1959] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/27/2017] [Accepted: 10/04/2017] [Indexed: 01/10/2023]
Abstract
Since the 1980s, a comprehensive field and laboratory investigation has been conducted throughout China, and a total of 29 virus species belonging to 7 families and 13 genera were identified through virological, morphological, and immunological methods, as well as whole-genome sequencing and molecular genetic analyses. Most of the virus isolates belong to 9 genera in the families Flaviviridae, Bunyaviridae, Togaviridae, and Reoviridae. Among them, 4 genera (Orthobunyavirus, Bunyavirus, Phlebovirus, and Nairovirus) belong to the family Bunyaviridae and 3 genera (Seadonavirus, Orbivirus, and Cypovirus) belong to the family Reoviridae. Analyses of the relationships between viruses and human/animal diseases indicated that Japanese encephalitis virus, dengue virus, severe fever with thrombocytopenia syndrome virus, tick-borne encephalitis virus, Crimean-Congo hemorrhagic fever virus, West Nile virus, and Tahyna virus can cause human and animal infections and disease epidemics in China. This review systematically introduces the current status of the diversity and geographical distribution of arboviruses and vectors in China. In addition, our results provide strong technical support for the prevention and control of arboviral diseases, the treatment of epidemics, and the early warning and prediction of diseases, and so they are significant for the control and prevention of arboviral diseases in Asia and around the world.
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Affiliation(s)
- Guodong Liang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xiaolong Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xiaoyan Gao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Shihong Fu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Huanyu Wang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Minghua Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Zhi Lu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Wuyang Zhu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Xinjun Lu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Lihua Wang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Yuxi Cao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Ying He
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Wenwen Lei
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
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21
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Hou J, Wang S, Jia M, Li D, Liu Y, Li Z, Zhu H, Xu H, Sun M, Lu L, Zhou Z, Peng H, Zhang Q, Fu S, Liang G, Yao L, Yu X, Carpp LN, Huang Y, McElrath J, Self S, Shao Y. A Systems Vaccinology Approach Reveals Temporal Transcriptomic Changes of Immune Responses to the Yellow Fever 17D Vaccine. THE JOURNAL OF IMMUNOLOGY 2017; 199:1476-1489. [PMID: 28687661 DOI: 10.4049/jimmunol.1700083] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/09/2017] [Indexed: 01/10/2023]
Abstract
In this study, we used a systems vaccinology approach to identify temporal changes in immune response signatures to the yellow fever (YF)-17D vaccine, with the aim of comprehensively characterizing immune responses associated with protective immunity. We conducted a cohort study in which 21 healthy subjects in China were administered one dose of the YF-17D vaccine; PBMCs were collected at 0 h and then at 4 h and days 1, 2, 3, 5, 7, 14, 28, 84, and 168 postvaccination, and analyzed by transcriptional profiling and immunological assays. At 4 h postvaccination, genes associated with innate cell differentiation and cytokine pathways were dramatically downregulated, whereas receptor genes were upregulated, compared with their baseline levels at 0 h. Immune response pathways were primarily upregulated on days 5 and 7, accompanied by the upregulation of the transcriptional factors JUP, STAT1, and EIF2AK2. We also observed robust activation of innate immunity within 2 d postvaccination and a durable adaptive response, as assessed by transcriptional profiling. Coexpression network analysis indicated that lysosome activity and lymphocyte proliferation were associated with dendritic cell (DC) and CD4+ T cell responses; FGL2, NFAM1, CCR1, and TNFSF13B were involved in these associations. Moreover, individuals who were baseline-seropositive for Abs against another flavivirus exhibited significantly impaired DC, NK cell, and T cell function in response to YF-17D vaccination. Overall, our findings indicate that YF-17D vaccination induces a prompt innate immune response and DC activation, a robust Ag-specific T cell response, and a persistent B cell/memory B cell response.
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Affiliation(s)
- Jue Hou
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Shuhui Wang
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Manxue Jia
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Dan Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Ying Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Zhengpeng Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Hong Zhu
- Beijing Entry-Exit Inspection and Quarantine Bureau, Beijing 102206, China
| | - Huifang Xu
- Beijing Entry-Exit Inspection and Quarantine Bureau, Beijing 102206, China
| | - Meiping Sun
- Beijing Center for Disease Control and Prevention, Beijing 102206, China
| | - Li Lu
- Beijing Center for Disease Control and Prevention, Beijing 102206, China
| | - Zhinan Zhou
- Beijing Center for Disease Control and Prevention, Beijing 102206, China
| | - Hong Peng
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Qichen Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Shihong Fu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310058, China
| | - Guodong Liang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310058, China
| | - Lena Yao
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Xuesong Yu
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Lindsay N Carpp
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Yunda Huang
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Julie McElrath
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Steve Self
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109; and
| | - Yiming Shao
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; .,Health Science Center, Peking University, Haidian District, Beijing 100191, China
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22
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Li W, Ma L, Guo LP, Wang XL, Zhang JW, Bu ZG, Hua RH. West Nile virus infectious replicon particles generated using a packaging-restricted cell line is a safe reporter system. Sci Rep 2017; 7:3286. [PMID: 28607390 PMCID: PMC5468312 DOI: 10.1038/s41598-017-03670-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/03/2017] [Indexed: 11/09/2022] Open
Abstract
West Nile virus (WNV) is a neurotropic pathogen which causes zoonotic disease in humans. Recently, there have been an increasing number of infected cases and there are no clinically approved vaccines or effective drugs to treat WNV infections in humans. The purpose of this study was to facilitate vaccine and antiviral drug discovery by developing a packaging cell line-restricted WNV infectious replicon particle system. We constructed a DNA-based WNV replicon lacking the C-prM-E coding region and replaced it with a GFP coding sequence. To produce WNV replicon particles, cell lines stably-expressing prM-E and C-prM-E were constructed. When the WNV replicon plasmid was co-transfected with a WNV C-expressing plasmid into the prM-E-expressing cell line or directly transfected the C-prM-E expressing cell line, the replicon particle was able to replicate, form green fluorescence foci, and exhibit cytopathic plaques similar to that induced by the wild type virus. The infectious capacity of the replicon particles was restricted to the packaging cell line as the replicons demonstrated only one round of infection in other permissive cells. Thus, this system provides a safe and convenient reporter WNV manipulating tool which can be used to study WNV viral invasion mechanisms, neutralizing antibodies and antiviral efficacy.
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Affiliation(s)
- Wei Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China
| | - Le Ma
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China
| | - Li-Ping Guo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China
| | - Xiao-Lei Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China
| | - Jing-Wei Zhang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China
| | - Zhi-Gao Bu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China.
| | - Rong-Hong Hua
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China.
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23
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Cao L, Fu S, Lv Z, Tang C, Cui S, Li X, Gao X, Li M, Cao Y, Lei W, He Y, Wang H, Liang G. West Nile virus infection in suspected febrile typhoid cases in Xinjiang, China. Emerg Microbes Infect 2017; 6:e41. [PMID: 28588289 PMCID: PMC5520305 DOI: 10.1038/emi.2017.27] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Lei Cao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Shihong Fu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Zhi Lv
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Chengjun Tang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Shiheng Cui
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Xiaolong Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Xiaoyan Gao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Minghua Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Yuxi Cao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Wenwen Lei
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Ying He
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Huanyu Wang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
| | - Guodong Liang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310058, China
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24
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Wang J, Yang J, Ge J, Hua R, Liu R, Li X, Wang X, Shao Y, Sun E, Wu D, Qin C, Wen Z, Bu Z. Newcastle disease virus-vectored West Nile fever vaccine is immunogenic in mammals and poultry. Virol J 2016; 13:109. [PMID: 27342050 PMCID: PMC4920995 DOI: 10.1186/s12985-016-0568-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 06/21/2016] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND West Nile virus (WNV) is an emerging zoonotic pathogen which is harmful to human and animal health. Effective vaccination in susceptible hosts should protect against WNV infection and significantly reduce viral transmission between animals and from animals to humans. A versatile vaccine suitable for different species that can be delivered via flexible routes remains an essential unmet medical need. In this study, we developed a recombinant avirulent Newcastle disease virus (NDV) LaSota strain expressing WNV premembrane/envelope (PrM/E) proteins (designated rLa-WNV-PrM/E) and evaluated its immunogenicity in mice, horses, chickens, ducks and geese. RESULTS Mouse immunization experiments disclosed that rLa-WNV-PrM/E induces significant levels of WNV-neutralizing antibodies and E protein-specific CD4+ and CD8+ T-cell responses. Moreover, recombinant rLa-WNV-PrM/E elicited significant levels of WNV-specific IgG in horses upon delivery via intramuscular immunization, and in chickens, ducks and geese via intramuscular, oral or intranasal immunization. CONCLUSIONS Our results collectively support the utility of rLa-WNV-PrM/E as a promising WNV veterinary vaccine candidate for mammals and poultry.
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Affiliation(s)
- Jinliang Wang
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Jie Yang
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Jinying Ge
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Ronghong Hua
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Renqiang Liu
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Xiaofeng Li
- />Department of Virology, State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xijun Wang
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Yu Shao
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Encheng Sun
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Donglai Wu
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Chengfeng Qin
- />Department of Virology, State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Zhiyuan Wen
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
| | - Zhigao Bu
- />State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin, Heilongjiang 150001 People’s Republic of China
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25
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David S, Abraham AM. Epidemiological and clinical aspects on West Nile virus, a globally emerging pathogen. Infect Dis (Lond) 2016; 48:571-86. [PMID: 27207312 DOI: 10.3109/23744235.2016.1164890] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Since the isolation of West Nile virus (WNV) in 1937, in Uganda, it has spread globally, causing significant morbidity and mortality. While birds serve as amplifier hosts, mosquitoes of the Culex genus function as vectors. Humans and horses are dead end hosts. The clinical manifestations of West Nile infection in humans range from asymptomatic illness to West Nile encephalitis. METHODS The laboratory offers an array of tests, the preferred method being detection of RNA and serum IgM for WNV, which, if detected, confirms the clinical diagnosis. Although no definitive antiviral therapy and vaccine are available for humans, many approaches are being studied. STUDY This article will review the current literature of the natural cycle, geographical distribution, virology, replication cycle, molecular epidemiology, pathogenesis, laboratory diagnosis, clinical manifestations, blood donor screening for WNV, treatment, prevention and vaccines.
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Affiliation(s)
- Shoba David
- a Department of Clinical Virology , Christian Medical College , Vellore , Tamil Nadu , India
| | - Asha Mary Abraham
- a Department of Clinical Virology , Christian Medical College , Vellore , Tamil Nadu , India
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26
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Lu Z, Fu SH, Cao L, Tang CJ, Zhang S, Li ZX, Tusong M, Yao XH, Zhang HL, Wang PY, Wumaier M, Yuan XY, Li MH, Zhu CZ, Fu LP, Liang GD. Human infection with West Nile Virus, Xinjiang, China, 2011. Emerg Infect Dis 2016; 20:1421-3. [PMID: 25062043 PMCID: PMC4111179 DOI: 10.3201/eid2008.131433] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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27
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Molecular Diagnostics: Huge Impact on the Improvement of Public Health in China. Mol Microbiol 2016. [DOI: 10.1128/9781555819071.ch21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Zhang PT, Shan C, Li XD, Liu SQ, Deng CL, Ye HQ, Shang BD, Shi PY, Lv M, Shen BF, Qin CF, Zhang B. Generation of a recombinant West Nile virus stably expressing the Gaussia luciferase for neutralization assay. Virus Res 2016; 211:17-24. [DOI: 10.1016/j.virusres.2015.09.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 09/22/2015] [Accepted: 09/23/2015] [Indexed: 10/23/2022]
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29
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The global ecology and epidemiology of West Nile virus. BIOMED RESEARCH INTERNATIONAL 2015; 2015:376230. [PMID: 25866777 PMCID: PMC4383390 DOI: 10.1155/2015/376230] [Citation(s) in RCA: 307] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 08/10/2014] [Indexed: 12/30/2022]
Abstract
Since its initial isolation in Uganda in 1937 through the present, West Nile virus (WNV) has become an important cause of human and animal disease worldwide. WNV, an enveloped virus of the genus Flavivirus, is naturally maintained in an enzootic cycle between birds and mosquitoes, with occasional epizootic spillover causing disease in humans and horses. The mosquito vectors for WNV are widely distributed worldwide, and the known geographic range of WNV transmission and disease has continued to increase over the past 77 years. While most human infections with WNV are asymptomatic, severe neurological disease may develop resulting in long-term sequelae or death. Surveillance and preventive measures are an ongoing need to reduce the public health impact of WNV in areas with the potential for transmission.
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Rutvisuttinunt W, Chinnawirotpisan P, Klungthong C, Shrestha SK, Thapa AB, Pant A, Yingst SL, Yoon IK, Fernandez S, Pavlin JA. Evidence of West Nile virus infection in Nepal. BMC Infect Dis 2014; 14:606. [PMID: 25427544 PMCID: PMC4265323 DOI: 10.1186/s12879-014-0606-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 10/31/2014] [Indexed: 12/03/2022] Open
Abstract
Background Acute febrile illness is common among those seeking medical care and is frequently treated empirically with the underlying illness remaining undiagnosed in resource-poor countries. A febrile illness study was conducted 2009-2010 to identify known and unknown pathogens circulating in Nepal. Method Study methods included diagnostic testing and preliminary ELISA screening of acute and convalescent samples for diseases both known and unknown to be circulating in Nepal, including West Nile virus (WNV). The molecular assays including Polymerase Chain Reaction (PCR), Sanger sequencing and ultra deep sequencing on MiSeq Illumina Platform were conducted to further confirm the presence of WNV. Results The study enrolled 2,046 patients presenting undifferentiated febrile illness with unknown etiology. Sera from 14 out of 2,046 patients were tested positive for west nile virus (WNV) by nested Reverse Transcription-Polymerase Chain Reaction (RT-PCR). Only two out of 14 cases were confirmed for the presence of WNV by sequencing and identified as WNV lineage 1 phylogentically. The two patients were adult males with fever and no neurological symptoms from Kathmandu and Bharatpur, Nepal. Conclusion Two out of 2,046 serum samples contained fragments of WNV genome resembling WNV lineage 1, which is evidence of the continued spread of WNV which should be considered a possible illness cause in Nepal. Electronic supplementary material The online version of this article (doi:10.1186/s12879-014-0606-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | - Arjun Pant
- Sukra Raj Tropical Infectious Diseases Hospital, Kathmandu, Nepal.
| | - Samuel L Yingst
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand.
| | - In-Kyu Yoon
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand.
| | - Stefan Fernandez
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand.
| | - Julie A Pavlin
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA.
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Ranjan R, Ranjan S. Ocular Pathology: Role of Emerging Viruses in the Asia-Pacific Region-A Review. Asia Pac J Ophthalmol (Phila) 2014; 3:299-307. [PMID: 26107917 DOI: 10.1097/apo.0000000000000021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The role of viral infections in ocular pathology varies greatly, involving all the components of the eye. Some viruses like herpes simplex, herpes zoster, adenovirus, enterovirus 70, influenza virus, human immunodeficiency virus, and cytomegalovirus are well-known for their role in ocular pathology. In recent years, emerging and resurging viral infections represent an important public health problem. The Asia-Pacific region has witnessed a number of pandemic and epidemic outbreaks caused by these viruses during the last 2 decades. The number of ocular complications being reported in patients of these viral infections has also increased significantly during this period. Ophthalmologists and physicians should be aware of ocular manifestations of newly emerging or resurging viral diseases. We conducted a review of the literature published during the last 20 years with the objectives of finding out outbreaks of emerging and reemerging viruses in the Asia-Pacific region and finding out any ocular involvement in these viral infections. An iterative search of the MEDLINE and the Google databases was made using the search terms emerging virus, ocular manifestations, ocular complications, Chikungunya, Dengue, Japanese encephalitis, West Nile fever, Kyasanur forest disease, Rift valley fever, Hantavirus, Henipavirus, Influenza virus, Enterovirus 71, and Asia-Pacific region, separately and with reported ocular involvement in combination. This review article discusses the epidemiology and the systemic and ocular manifestations of all emerging viral infections with reported ocular involvement in the Asia-Pacific region.
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Affiliation(s)
- Ratnesh Ranjan
- From the *Drishti Eye Hospital, Bangalore, India; and the †Department of Microbiology, MS Ramaiah Medical College, Bangalore, India
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Jiang S, Wang Z, Guo X, Zhang Y, Li C, Dong Y, Xing D, Zhao T. Infection and dissemination of West Nile virus in China by the potential vector, Culex pipiens pallens. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2014; 39:78-82. [PMID: 24820559 DOI: 10.1111/j.1948-7134.2014.12073.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 01/06/2014] [Indexed: 05/09/2023]
Abstract
The distribution of the West Nile virus (WNV) in the organs and tissues of the mosquito Culex pipiens pallens, a potential vector of WNV in China, was investigated up to 14 days after oral infection. The WNV antigen was detected in paraffin-embedded mosquitoes using immunocytochemistry and viral titers of post-infected mosquitoes determined by plaque assay. Viral titers sharply decreased 24 h post-infection, were undetectable for the first few days, then rose over the course of infection. The first midgut infection appeared after one day, and the overall infection rate (based on midgut infection) was 43.9%. Other tissues, including hindgut, foregut, ovarian follicles, Malpighian tubules, and ommatidia, showed weak WNV antigens as early as three days post-infection. Staining in the salivary glands first appeared after seven days, and the salivary gland infection rate on the 14th day was 37.5%. Specimens with no detectable WNV antigens in any tissues, and with positive results confined to the midgut, anterior midgut, and hindgut, were observed on the 14th day. The route of viral dissemination from the midgut, and the relative importance of amplifying tissues in mosquitoes' susceptibility to infection, were evaluated. The results indicate that Cx. p. pallens has the ability to harbor WNV throughout its alimentary system and that midgut epithelial cells may be the initial site of the replication of this virus in this species.
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Affiliation(s)
- Shufang Jiang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China; General Hospital of the People's Liberation Army, Beijing, China
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Exploring the spatio-temporal dynamics of reservoir hosts, vectors, and human hosts of West Nile virus: a review of the recent literature. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2013; 10:5399-432. [PMID: 24284356 PMCID: PMC3863852 DOI: 10.3390/ijerph10115399] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 01/22/2023]
Abstract
Over the last two decades West Nile Virus (WNV) has been responsible for significant disease outbreaks in humans and animals in many parts of the World. Its extremely rapid global diffusion argues for a better understanding of its geographic extent. The purpose of this inquiry was to explore spatio-temporal patterns of WNV using geospatial technologies to study populations of the reservoir hosts, vectors, and human hosts, in addition to the spatio-temporal interactions among these populations. Review of the recent literature on spatial WNV disease risk modeling led to the conclusion that numerous environmental factors might be critical for its dissemination. New Geographic Information Systems (GIS)-based studies are monitoring occurrence at the macro-level, and helping pinpoint areas of occurrence at the micro-level, where geographically-targeted, species-specific control measures are sometimes taken and more sophisticated methods of surveillance have been used.
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