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Velay A, Baquer F, Brunet J, Denis J, Parfut A, Talagrand-Reboul E, Hansmann Y. Infectious risks associated with outdoor sports activities. Infect Dis Now 2024; 54:104862. [PMID: 38845331 DOI: 10.1016/j.idnow.2024.104862] [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: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 06/15/2024]
Abstract
In France, outdoor sports and activities account for 36% of sports engagement, making outdoor venues the most popular settings for sports participation. Discussing the links between sports and health almost always highlights the beneficial impact of engaging in sports. However, due to a lack of specific notifications, infectious risks are not subject to epidemiological monitoring, and need to be better understood. Since the practice of outdoor sports has become part and parcel of many individuals' daily routines, it is essential to more accurately characterize the knowledge we have gained about the risks associated with exposure. However, directly associating the practice of a sport with an elevated risk of infectious diseases is a challenging endeavor. Sociological factors based on risk awareness and adoption of protective behaviors in response to the risk are crucial to the orientation of prevention efforts. This review deals with several (bacteriological, viral, parasitic, and mycological) infectious risks related to outdoor activities practiced in a natural field via contamination routes such as tick-bite, enteric pathogen, skin, and aerosol transmission. We have also detailed a number of preventive measures taking into account the outdoor setting (e.g., vaccination).
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Affiliation(s)
- Aurélie Velay
- Laboratoire de Virologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
| | - Florian Baquer
- Laboratoire de Bactériologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Julie Brunet
- Laboratoire de Parasitologie et Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Julie Denis
- Laboratoire de Parasitologie et Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Assilina Parfut
- Laboratoire de Virologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Yves Hansmann
- Service des Maladies Infectieuses et Tropicales, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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Mathews-Martin L, Gonzalez G, Dheilly NM, Amaral-Moraes R, Dumarest M, Helle T, Migne C, Caillot C, Lacour SA, Pérelle S, Beck C, Metras R, Bournez L. Exposure of cattle to tick-borne encephalitis virus in the historical endemic zone in north-eastern France. BMC Vet Res 2024; 20:228. [PMID: 38796429 PMCID: PMC11127440 DOI: 10.1186/s12917-024-04079-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 05/13/2024] [Indexed: 05/28/2024] Open
Abstract
BACKGROUND Tick-borne encephalitis (TBE) is a severe human neuroinfection caused by TBE virus (TBEV). TBEV is transmitted by tick bites and by the consumption of unpasteurized dairy products from infected asymptomatic ruminants. In France, several food-borne transmission events have been reported since 2020, raising the question of the level of exposure of domestic ungulates to TBEV. In this study, our objectives were (i) to estimate TBEV seroprevalence and quantify antibodies titres in cattle in the historical endemic area of TBEV in France using the micro virus neutralisation test (MNT) and (ii) to compare the performance of two veterinary cELISA kits with MNT for detecting anti-TBEV antibodies in cattle in various epidemiological contexts. A total of 344 cattle sera from four grid cells of 100 km² in Alsace-Lorraine (endemic region) and 84 from western France, assumed to be TBEV-free, were investigated. RESULTS In Alsace-Lorraine, cattle were exposed to the virus with an overall estimated seroprevalence of 57.6% (95% CI: 52.1-62.8%, n = 344), varying locally from 29.9% (95% CI: 21.0-40.0%) to 92.1% (95% CI: 84.5-96.8%). Seroprevalence did not increase with age, with one- to three-year-old cattle being as highly exposed as older ones, suggesting a short-life duration of antibodies. The proportion of sera with MNT titres lower than 1:40 per grid cell decreased with increased seroprevalence. Both cELISA kits showed high specificity (> 90%) and low sensitivity (less than 78.1%) compared with MNT. Sensitivity was lower for sera with neutralising antibodies titres below 1:40, suggesting that sensitivity of these tests varied with local virus circulation intensity. CONCLUSIONS Our results highlight that cattle were highly exposed to TBEV. Screening strategy and serological tests should be carefully chosen according to the purpose of the serological study and with regard to the limitations of each method.
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Affiliation(s)
- Laure Mathews-Martin
- ANSES, Nancy Laboratory for Rabies and Widlife, Malzéville, F-54220, France.
- VetAgro Sup, ENSV-FVI, Marcy-L'Étoile, F-69280, France.
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France.
- ANSES, Laboratory for Food Safety, UVE, Maisons-Alfort, F-94700, France.
| | - Gaëlle Gonzalez
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Nolwenn M Dheilly
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Rayane Amaral-Moraes
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Marine Dumarest
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Teheipuaura Helle
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Camille Migne
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Christophe Caillot
- ANSES, Nancy Laboratory for Rabies and Widlife, Malzéville, F-54220, France
| | - Sandrine A Lacour
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Sylvie Pérelle
- ANSES, Laboratory for Food Safety, UVE, Maisons-Alfort, F-94700, France
| | - Cécile Beck
- ANSES, INRAE, ENVA, UMR Virology, ANSES Animal Health Laboratory, Maisons-Alfort, F-94700, France
| | - Raphaëlle Metras
- Sorbonne Université, INSERM, Pierre Louis Institute of Epidemiology and Public Health (IPLESP, UMRS, 1136), Paris, F-75012, France
| | - Laure Bournez
- ANSES, Nancy Laboratory for Rabies and Widlife, Malzéville, F-54220, France.
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Boulanger N. [Anthropization and tick-borne diseases: the example of Lyme borreliosis]. C R Biol 2024; 346:35-41. [PMID: 37655860 DOI: 10.5802/crbiol.115] [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: 01/31/2023] [Accepted: 03/10/2023] [Indexed: 09/02/2023]
Abstract
Ticks and tick-borne diseases are on the rise throughout the world. The reasons are multifactorial but all associated with human practices, including climate change and socio-economic and eco systemic changes. In the northern hemisphere, Lyme borreliosis and its vector, the tick belonging to the Ixodes ricinus complex, are particularly studied. Changes in forestry and the expansion of certain wild ungulates since the Second World War could explain the increasing presence of this tick in our environment. As it is likely to transmit other microorganisms potentially pathogenic to humans, an integrated multidisciplinary approach to identify human practices promoting its expansion is critical to control the (re)emergence of infectious diseases. Other ticks also benefit from the same anthropised context to increase their numbers in the environment.
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Zortman I, de Garine-Wichatitsky M, Arsevska E, Dub T, Van Bortel W, Lefrançois E, Vial L, Pollet T, Binot A. A social-ecological systems approach to tick bite and tick-borne disease risk management: Exploring collective action in the Occitanie region in southern France. One Health 2023; 17:100630. [PMID: 38024266 PMCID: PMC10665146 DOI: 10.1016/j.onehlt.2023.100630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/19/2023] [Indexed: 12/01/2023] Open
Abstract
Ticks are amongst the most important zoonotic disease vectors affecting human and animal health worldwide. Tick-borne diseases (TBDs) are rapidly expanding geographically and in incidence, most notably in temperate regions of Europe where ticks are considered the principal zoonotic vector of Public Health relevance, as well as a major health and economic preoccupation in agriculture and equine industries. Tick-borne pathogen (TBP) transmission is contingent on complex, interlinked vector-pathogen-host dynamics, environmental and ecological conditions and human behavior. Tackling TBD therefore requires a better understanding of the interconnected social and ecological variables (i.e., the social-ecological system) that favor disease (re)-emergence. The One Health paradigm recognizes the interdependence of human, animal and environmental health and proposes an integrated approach to manage TBD. However, One Health interventions are limited by significant gaps in our understanding of the complex, systemic nature of TBD risk, in addition to a lack of effective, universally accepted and environmentally conscious tick control measures. Today individual prevention gestures are the most effective strategy to manage TBDs in humans and animals, making local communities important actors in TBD detection, prevention and management. Yet, how they engage and collaborate within a multi-actor TBD network has not yet been explored. Here, we argue that transdisciplinary collaborations that go beyond research, political and medical stakeholders, and extend to local community actors can aid in identifying relevant social-ecological risk indicators key for informing multi-level TBD detection, prevention and management measures. This article proposes a transdisciplinary social-ecological systems framework, based on participatory research approaches, to better understand the necessary conditions for local actor engagement to improve TBD risk. We conclude with perspectives for implementing this methodological framework in a case study in the south of France (Occitanie region), where multi-actor collaborations are mobilized to stimulate multi-actor collective action and identify relevant social-ecological indicators of TBD risk.
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Affiliation(s)
- Iyonna Zortman
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
| | - Michel de Garine-Wichatitsky
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
- Kasetsart University, Faculty of Veterinary Medicine, Bangkok, Thailand
| | - Elena Arsevska
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
| | - Timothée Dub
- Infectious Disease Control and Vaccination Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Unit Po Box 30. FI-00271 Helsinki, Finland
| | - Wim Van Bortel
- Unit Entomology and Outbreak Research Team, Department of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat, 155, Antwerpen, Belgium
| | - Estelle Lefrançois
- LIRDEF, Université de Montpellier and Université Paul Valéry Montpellier, France
| | - Laurence Vial
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
| | - Thomas Pollet
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
| | - Aurélie Binot
- Joint Research Unit Animal, Health, Territories, Risks, Ecosystems (UMR ASTRE), French Agricultural Research Centre for International Development (CIRAD), National Research Institute for Agriculture, Food and Environment (INRAE), Montpellier, France
- Maison des Sciences de l'Homme Sud, Montpellier, France
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Hills SL, Poehling KA, Chen WH, Staples JE. Tick-Borne Encephalitis Vaccine: Recommendations of the Advisory Committee on Immunization Practices, United States, 2023. MMWR Recomm Rep 2023; 72:1-29. [PMID: 37943707 PMCID: PMC10651317 DOI: 10.15585/mmwr.rr7205a1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023] Open
Abstract
Tick-borne encephalitis (TBE) virus is focally endemic in parts of Europe and Asia. The virus is primarily transmitted to humans by the bites of infected Ixodes species ticks but can also be acquired less frequently by alimentary transmission. Other rare modes of transmission include through breastfeeding, blood transfusion, solid organ transplantation, and slaughtering of viremic animals. TBE virus can cause acute neurologic disease, which usually results in hospitalization, often permanent neurologic or cognitive sequelae, and sometimes death. TBE virus infection is a risk for certain travelers and for laboratory workers who work with the virus. In August 2021, the Food and Drug Administration approved Ticovac TBE vaccine for use among persons aged ≥1 year. This report summarizes the epidemiology of and risks for infection with TBE virus, provides information on the immunogenicity and safety of TBE vaccine, and summarizes the recommendations of the Advisory Committee on Immunization Practices (ACIP) for use of TBE vaccine among U.S. travelers and laboratory workers. The risk for TBE for most U.S. travelers to areas where the disease is endemic is very low. The risk for exposure to infected ticks is highest for persons who are in areas where TBE is endemic during the main TBE virus transmission season of April–November and who are planning to engage in recreational activities in woodland habitats or who might be occupationally exposed. All persons who travel to areas where TBE is endemic should be advised to take precautions to avoid tick bites and to avoid the consumption of unpasteurized dairy products because alimentary transmission of TBE virus can occur. TBE vaccine can further reduce infection risk and might be indicated for certain persons who are at higher risk for TBE. The key factors in the risk-benefit assessment for vaccination are likelihood of exposure to ticks based on activities and itinerary (e.g., location, rurality, season, and duration of travel or residence). Other risk-benefit considerations should include 1) the rare occurrence of TBE but its potentially high morbidity and mortality, 2) the higher risk for severe disease among certain persons (e.g., older persons aged ≥60 years), 3) the availability of an effective vaccine, 4) the possibility but low probability of serious adverse events after vaccination, 5) the likelihood of future travel to areas where TBE is endemic, and 6) personal perception and tolerance of risk ACIP recommends TBE vaccine for U.S. persons who are moving or traveling to an area where the disease is endemic and will have extensive exposure to ticks based on their planned outdoor activities and itinerary. Extensive exposure can be considered based on the duration of travel and frequency of exposure and might include shorter-term (e.g., <1 month) travelers with daily or frequent exposure or longer-term travelers with regular (e.g., a few times a month) exposure to environments that might harbor infected ticks. In addition, TBE vaccine may be considered for persons who might engage in outdoor activities in areas where ticks are likely to be found, with a decision to vaccinate made on the basis of an assessment of their planned activities and itinerary, risk factors for a poor medical outcome, and personal perception and tolerance of risk. In the laboratory setting, ACIP recommends TBE vaccine for laboratory workers with a potential for exposure to TBE virus
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Dagostin F, Tagliapietra V, Marini G, Cataldo C, Bellenghi M, Pizzarelli S, Cammarano RR, Wint W, Alexander NS, Neteler M, Haas J, Dub T, Busani L, Rizzoli A. Ecological and environmental factors affecting the risk of tick-borne encephalitis in Europe, 2017 to 2021. Euro Surveill 2023; 28:2300121. [PMID: 37855903 PMCID: PMC10588310 DOI: 10.2807/1560-7917.es.2023.28.42.2300121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/11/2023] [Indexed: 10/20/2023] Open
Abstract
BackgroundTick-borne encephalitis (TBE) is a disease which can lead to severe neurological symptoms, caused by the TBE virus (TBEV). The natural transmission cycle occurs in foci and involves ticks as vectors and several key hosts that act as reservoirs and amplifiers of the infection spread. Recently, the incidence of TBE in Europe has been rising in both endemic and new regions.AimIn this study we want to provide comprehensive understanding of the main ecological and environmental factors that affect TBE spread across Europe.MethodsWe searched available literature on covariates linked with the circulation of TBEV in Europe. We then assessed the best predictors for TBE incidence in 11 European countries by means of statistical regression, using data on human infections provided by the European Surveillance System (TESSy), averaged between 2017 and 2021.ResultsWe retrieved data from 62 full-text articles and identified 31 different covariates associated with TBE occurrence. Finally, we selected eight variables from the best model, including factors linked to vegetation cover, climate, and the presence of tick hosts.DiscussionThe existing literature is heterogeneous, both in study design and covariate types. Here, we summarised and statistically validated the covariates affecting the variability of TBEV across Europe. The analysis of the factors enhancing disease emergence is a fundamental step towards the identification of potential hotspots of viral circulation. Hence, our results can support modelling efforts to estimate the risk of TBEV infections and help decision-makers implement surveillance and prevention campaigns.
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Affiliation(s)
- Francesca Dagostin
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN), Italy
| | - Valentina Tagliapietra
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN), Italy
| | - Giovanni Marini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN), Italy
| | - Claudia Cataldo
- Centre for Gender-specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Bellenghi
- Centre for Gender-specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Scilla Pizzarelli
- Knowledge Unit (Documentation, Library), Istituto Superiore di Sanità, Rome, Italy
| | | | - William Wint
- Environmental Research Group Oxford Ltd, Oxford, United Kingdom
| | | | | | | | - Timothée Dub
- Department of Health Security, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Luca Busani
- Centre for Gender-specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Annapaola Rizzoli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN), Italy
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Jakimovski D, Mateska S, Dimitrova E, Bosilkovski M, Mijatović D, Simin V, Bogdan I, Grujić J, Budakov-Obradović Z, Meletis E, Kostoulas P, Cabezas-Cruz A, Banović P. Tick-Borne Encephalitis Virus and Borrelia burgdorferi Seroprevalence in Balkan Tick-Infested Individuals: A Two-Centre Study. Pathogens 2023; 12:922. [PMID: 37513769 PMCID: PMC10385890 DOI: 10.3390/pathogens12070922] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Lyme borreliosis (LB) and tick-borne encephalitis (TBE) are important tick-borne diseases in Europe. This study aimed to investigate the seroreactivity against Borrelia burgdorferi and TBE virus (TBEV) in tick-infested individuals in North Macedonia and Serbia. Serum samples were collected from tick-infested individuals and from healthy individuals in the same regions. Samples were tested for anti-Borrelia IgG reactivity and TBEV-neutralizing antibodies. Results showed higher seroreactivity against Borrelia antigens in patients and healthy donors from Novi Sad compared to those from the Skopje region. However, there was no statistically significant difference between tick-infested patients and healthy donors within each region. No TBEV-neutralizing antibodies were detected in participants from Novi Sad or in the control groups, except for one person from North Macedonia who had a moderate TBEV-neutralizing reaction. The study highlights the need for improved surveillance and diagnostic capabilities for LB and TBE in these regions. It also suggests the potential existence of TBEV foci in North Macedonia. The findings provide a complementary understanding of the LB and TBE epidemiology in the studied regions; however, further research is needed to investigate the presence and distribution of Borrelia spp. and TBEV in ticks to assess the significance of detected seroreactivity.
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Affiliation(s)
- Dejan Jakimovski
- Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North Macedonia
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Sofija Mateska
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Emilija Dimitrova
- Department of Infectious Diseases, City General Hospital 8th September, 1000 Skopje, North Macedonia
| | - Mile Bosilkovski
- Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North Macedonia
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Dragana Mijatović
- Department for Research and Monitoring of Rabies and Other Zoonoses, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Verica Simin
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Ivana Bogdan
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Jasmina Grujić
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Zorana Budakov-Obradović
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Eleftherios Meletis
- Faculty of Public and One Health, School of Health Sciences, University of Thessaly, 24410 Karditsa, Greece
| | - Polychronis Kostoulas
- Faculty of Public and One Health, School of Health Sciences, University of Thessaly, 24410 Karditsa, Greece
| | - Alejandro Cabezas-Cruz
- Anses, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR BIPAR, Laboratoire de Santé Animale, F-94700 Maisons-Alfort, France
| | - Pavle Banović
- Clinic for Lyme Borreliosis and Other Tick-Borne Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
- Department of Microbiology with Parasitology and Immunology, Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
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Abstract
PURPOSE OF REVIEW Tick-borne encephalitis continues to be one of the most significant causes of viral encephalitis in Europe and Asia. This review will focus on recent developments in the epidemiology, pathogenesis and therapeutic approaches related to infection with tick-borne encephalitis virus. RECENT FINDINGS There is a growing consensus that tick-borne encephalitis viruses are increasing in geographical range, with countries previously free of disease reporting detection of both human cases and presence of virus within indigenous tick populations. The drivers for this are multifactorial but underpinned by human-mediated climate change. Recent developments in pathogenesis have focussed on the intracellular response to infection, particularly in different cell types within the central nervous system (CNS) that are revealing the array of cellular networks triggered by infection. This in turn highlights the need for small molecule therapeutics, such as nucleoside analogues, that can enter the CNS, and the intracellular environment, to inhibit virus replication following neuroinvasion. SUMMARY Based on continued epidemiological surveillance, tick-borne encephalitis viruses will increasingly affect human populations in Europe and Asia. Much of the research highlighted in this review demonstrates incremental advances in our understanding of these viruses. However, more is required if effective prevention and treatment of this devastating encephalitic viruses are to be realized.
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Affiliation(s)
- Nicholas Johnson
- Vector-Borne Diseases, Virology Department, Animal and Plant Health Agency, Woodham Lane, Addlestone, Surrey, UK
| | - Camille V Migné
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR 1161 Virologie, Laboratoire de Santé Animale, Maison-Alfort, France
| | - Gaëlle Gonzalez
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR 1161 Virologie, Laboratoire de Santé Animale, Maison-Alfort, France
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9
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Picard L, Mailles A, Fillâtre P, Tattevin P, Stahl JP. Encephalitis in travellers: A prospective multicentre study. J Travel Med 2022; 30:6869133. [PMID: 36461934 DOI: 10.1093/jtm/taac145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/12/2022] [Accepted: 11/29/2022] [Indexed: 12/07/2022]
Abstract
BACKGROUND As the epidemiology of encephalitis varies from one country to another, international travel may be an important clue for the diagnostic workout of this puzzling disease. METHODS We performed an ancillary study using the ENCEIF prospective cohort conducted in 62 clinical sites in France from 2016 to 2019. All cases of encephalitis in adults that fulfilled a case definition derived from the International Encephalitis Consortium were included. Travellers were defined as patients who spent at least one night in a foreign country within the last six months. RESULTS Of the 494 encephalitis patients enrolled, 69 (14%) were travellers. As compared to non-travellers, they were younger (median age, 48 years [interquartile range, 36-69] vs. 66 [49-76], P < 0.001), less likely to be immunocompromised: 2/69 (3%) vs 56/425 (13%), P = 0.02, and reported more arthralgia: 7/69 (10%) vs. 11/425 (3%), P = 0.007. The risk of poor outcome at hospital discharge (Glasgow outcome scale ≤ 3), was similar for travellers and for non-travellers after adjustment (aOR 0.80 [0.36-1.80], P = 0.594). Arboviruses were the main causes of encephalitis in travellers: 15/69 (22%) vs. 20/425 (5%) in non-travellers, P < 0.001, and Herpes simplex virus (HSV) was the second (9/69, 13%). Of note, in 19% (13/69) of cases, the risk of encephalitis in travellers may have been decreased with a vaccine. CONCLUSION The two primary causes of encephalitis in travellers are arboviruses, and HSV. Empirical treatment of encephalitis in travellers must include aciclovir. Pre-travel advice and vaccination may decrease the risk of encephalitis in travellers.
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Affiliation(s)
- Léa Picard
- Université Rennes 1, Service des Maladies Infectieuses et Réanimation Médicale, Centre Hospitalo-Universitaire, Rennes, France
| | - Alexandra Mailles
- Santé Publique France, Direction des Maladies Infectieuses, Saint-Maurice, France.,European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Infectious diseases of the Brain (ESGIB), Basel, Switzerland
| | - Pierre Fillâtre
- European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Infectious diseases of the Brain (ESGIB), Basel, Switzerland.,Service de Réanimation Polyvalente, Centre Hospitalier, Saint-Brieuc, France
| | - Pierre Tattevin
- Université Rennes 1, Service des Maladies Infectieuses et Réanimation Médicale, Centre Hospitalo-Universitaire, Rennes, France.,European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Infectious diseases of the Brain (ESGIB), Basel, Switzerland
| | - Jean-Paul Stahl
- European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Infectious diseases of the Brain (ESGIB), Basel, Switzerland.,Université Grenoble Alpes, Maladies Infectieuses, France
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Petitgas P, Tattevin P, Mailles A, Fillâtre P, Stahl JP. Infectious encephalitis in elderly patients: a prospective multicentre observational study in France 2016-2019. Infection 2022:10.1007/s15010-022-01927-3. [PMID: 36152225 DOI: 10.1007/s15010-022-01927-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/15/2022] [Indexed: 12/01/2022]
Abstract
PURPOSE Data on encephalitis in elderly patients are scarce. We aimed to describe the characteristics, aetiologies, management, and outcome of encephalitis in patients older than 65 years. METHODS We performed an ancillary study of ENCEIF, a prospective cohort that enrolled all cases of encephalitis managed in 46 clinical sites in France during years 2016-2019. Cases were categorized in three age groups: (1) 18-64; (2) 65-79; (3) ≥ 80 years. RESULTS Of the 494 adults with encephalitis enrolled, 258 (52%) were ≥ 65 years, including 74 (15%) ≥ 80 years. Patients ≥ 65 years were more likely to present with coma, impaired consciousness, confusion, aphasia, and rash, but less likely to present with fever, and headache (P < 0.05 for each). Median cerebrospinal fluid (CSF) white cells count was 61/mm3[13-220] in 65-79 years, 62 [17-180] in ≥ 80 years, vs. 114 [34-302] in < 65 years (P = 0.01). The proportion of cases due to Listeria monocytogenes and VZV increased after 65 years (P < 0.001), while the proportion of tick-borne encephalitis and Mycobacterium tuberculosis decreased with age (P < 0.05 for each). In-hospital mortality was 6/234 (3%) in < 65 years, 18/183 (10%) in 65-79 years, and 13/73 (18%) in ≥ 80 years (P < 0.001). Age ≥ 80 years, coma on admission, CSF protein ≥ 0.8 g/L and viral encephalitis were independently predictive of 6 month mortality. CONCLUSION Elderly patients represent > 50% of adults with encephalitis in France, with higher proportion of L. monocytogenes and VZV encephalitis, increased risk of death, and sequels. The empirical treatment currently recommended, aciclovir and amoxicillin, is appropriate for this age group.
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Affiliation(s)
- Paul Petitgas
- Service des Maladies Infectieuses et Réanimation Médicale, Université Rennes 1, Hôpital Pontchaillou, Centre Hospitalo-Universitaire (CHU), 35000, Rennes, France.,Service des Maladies Infectieuses et de Médecine Interne, CHU de Saint-Pierre, La Réunion, France
| | - Pierre Tattevin
- Service des Maladies Infectieuses et Réanimation Médicale, Université Rennes 1, Hôpital Pontchaillou, Centre Hospitalo-Universitaire (CHU), 35000, Rennes, France.
| | - Alexandra Mailles
- Santé Publique France, Direction des Maladies Infectieuses, Saint-Maurice, France
| | - Pierre Fillâtre
- Service de Réanimation Polyvalente, Saint-Brieuc, CH, France
| | - Jean-Paul Stahl
- Université Grenoble Alpes, CHU, Maladies Infectieuses, Grenoble, France
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11
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Gonzalez G, Bournez L, Moraes RA, Marine D, Galon C, Vorimore F, Cochin M, Nougairède A, Hennechart-Collette C, Perelle S, Leparc-Goffart I, Durand GA, Grard G, Bénet T, Danjou N, Blanchin M, Lacour SA, Franck B, Chenut G, Mainguet C, Simon C, Brémont L, Zientara S, Moutailler S, Martin-Latil S, Dheilly NM, Beck C, Lecollinet S. A One-Health Approach to Investigating an Outbreak of Alimentary Tick-Borne Encephalitis in a Non-endemic Area in France (Ain, Eastern France): A Longitudinal Serological Study in Livestock, Detection in Ticks, and the First Tick-Borne Encephalitis Virus Isolation and Molecular Characterisation. Front Microbiol 2022; 13:863725. [PMID: 35479640 PMCID: PMC9037541 DOI: 10.3389/fmicb.2022.863725] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/04/2022] [Indexed: 12/30/2022] Open
Abstract
Tick-borne encephalitis virus’ (TBEV) geographic range and the human incidence are increasing throughout Europe, putting a number of non-endemic regions and countries at risk of outbreaks. In spring 2020, there was an outbreak of tick-born encephalitis (TBE) in Ain, Eastern France, where the virus had never been detected before. All patients but one had consumed traditional unpasteurised raw goat cheese from a local producer. We conducted an investigation in the suspected farm using an integrative One Health approach. Our methodology included (i) the detection of virus in cheese and milk products, (ii) serological testing of all animals in the suspected farm and surrounding farms, (iii) an analysis of the landscape and localisation of wooded area, (iv) the capture of questing ticks and small mammals for virus detection and estimating enzootic hazard, and (v) virus isolation and genome sequencing. This approach allowed us to confirm the alimentary origin of the TBE outbreak and witness in real-time the seroconversion of recently exposed individuals and excretion of virus in goat milk. In addition, we identified a wooded focus area where and around which there is a risk of TBEV exposure. We provide the first TBEV isolate responsible for the first alimentary-transmitted TBE in France, obtained its full-length genome sequence, and found that it belongs to the European subtype of TBEV. TBEV is now a notifiable human disease in France, which should facilitate surveillance of its incidence and distribution throughout France.
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Affiliation(s)
- Gaëlle Gonzalez
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Laure Bournez
- ANSES, Nancy Laboratory for Rabies and Wildlife, Malzéville, France
| | - Rayane Amaral Moraes
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Dumarest Marine
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Clémence Galon
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Fabien Vorimore
- Bacterial Zoonosis Unit, Laboratory for Animal Health, ANSES Maisons-Alfort, Paris-Est University, Paris, France
| | - Maxime Cochin
- Unité des Virus Émergents (UVE), Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection, Marseille, France
| | - Antoine Nougairède
- Unité des Virus Émergents (UVE), Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection, Marseille, France
| | | | - Sylvie Perelle
- ANSES Laboratory for Food Safety, Université Paris-Est, Maisons-Alfort, France
| | - Isabelle Leparc-Goffart
- Unité des Virus Émergents (UVE), Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection, Marseille, France.,French National Reference Centre for Arbovirus, Armed Forces Biomedical Research Institute, Marseille, France
| | - Guillaume André Durand
- Unité des Virus Émergents (UVE), Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection, Marseille, France.,French National Reference Centre for Arbovirus, Armed Forces Biomedical Research Institute, Marseille, France
| | - Gilda Grard
- Unité des Virus Émergents (UVE), Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection, Marseille, France.,French National Reference Centre for Arbovirus, Armed Forces Biomedical Research Institute, Marseille, France
| | - Thomas Bénet
- Santé Publique France, French Public Health Agency, Auvergne-Rhône-Alpes Regional Office, Lyon, France
| | - Nathalie Danjou
- Regional Health Agency (Agence Régionale de Santé), Auvergne-Rhône-Alpes, Lyon, France
| | - Martine Blanchin
- Regional Health Agency (Agence Régionale de Santé), Auvergne-Rhône-Alpes, Lyon, France
| | - Sandrine A Lacour
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Boué Franck
- ANSES, Nancy Laboratory for Rabies and Wildlife, Malzéville, France
| | - Guillaume Chenut
- Local Health Authority, Direction Départementale de la Protection de la Population de l'Ain, Bourg-en-Bresse, France
| | - Catherine Mainguet
- Local Health Authority, Direction Départementale de la Protection de la Population de l'Ain, Bourg-en-Bresse, France
| | - Catherine Simon
- Local Health Authority, Direction Départementale de la Protection de la Population de l'Ain, Bourg-en-Bresse, France
| | - Laurence Brémont
- Local Health Authority, Direction Départementale de la Protection de la Population de l'Ain, Bourg-en-Bresse, France
| | - Stephan Zientara
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Sara Moutailler
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Sandra Martin-Latil
- ANSES Laboratory for Food Safety, Université Paris-Est, Maisons-Alfort, France
| | - Nolwenn M Dheilly
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Cécile Beck
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Sylvie Lecollinet
- ANSES, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, Maisons-Alfort, France
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12
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Banović P, Díaz-Sánchez AA, Đurić S, Sević S, Turkulov V, Lendak D, Mikić SS, Simin V, Mijatović D, Bogdan I, Potkonjak A, Savić S, Obregón D, Cabezas-Cruz A. Unexpected TBEV Seropositivity in Serbian Patients Who Recovered from Viral Meningitis and Encephalitis. Pathogens 2022; 11:pathogens11030371. [PMID: 35335695 PMCID: PMC8951648 DOI: 10.3390/pathogens11030371] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 12/12/2022] Open
Abstract
The tick-borne encephalitis virus (TBEV) causes a life-threatening disease named Tick-borne encephalitis (TBE). The clinical symptoms associated with TBE range from non-specific to severe inflammation of the central nervous system and are very similar to the clinical presentation of other viral meningitis/encephalitis. In consequence, TBE is often misclassified by clinical physicians, mainly in the non-identified high-risk areas where none or only a few TBE cases have been reported. Considering this situation, we hypothesized that among persons from northern Serbia who recovered from viral meningitis or encephalitis, there would be evidence of TBEV infection. To test this hypothesis, in this observational study, we evaluated the seroreactivity against TBEV antigens in patients from northern Serbia who were hospitalized due to viral meningitis and/or viral encephalitis of unknown etiology. Three cases of seroreactivity to TBEV antigens were discovered among convalescent patients who recovered from viral meningitis and/or encephalitis and accepted to participate in the study (n = 15). The clinical and laboratory findings of these patients overlap with that of seronegative convalescent patients. Although TBE has been a notifiable disease in Serbia since 2004, there is no active TBE surveillance program for the serologic or molecular screening of TBEV infection in humans in the country. This study highlights the necessity to increase the awareness of TBE among physicians and perform active and systematic screening of TBEV antibodies among patients with viral meningitis and/or encephalitis.
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Affiliation(s)
- Pavle Banović
- Ambulance for Lyme Borreliosis and Other Tick-Borne Diseases, Department of Prevention of Rabies and Other Infectious Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia;
- Department of Microbiology with Parasitology and Immunology, Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
- Correspondence: (P.B.); (A.C.-C.)
| | | | - Selena Đurić
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia; (S.Đ.); (S.S.); (V.T.); (D.L.); (S.S.M.)
| | - Siniša Sević
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia; (S.Đ.); (S.S.); (V.T.); (D.L.); (S.S.M.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | - Vesna Turkulov
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia; (S.Đ.); (S.S.); (V.T.); (D.L.); (S.S.M.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | - Dajana Lendak
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia; (S.Đ.); (S.S.); (V.T.); (D.L.); (S.S.M.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | - Sandra Stefan Mikić
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia; (S.Đ.); (S.S.); (V.T.); (D.L.); (S.S.M.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | - Verica Simin
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia; (V.S.); (I.B.)
| | - Dragana Mijatović
- Ambulance for Lyme Borreliosis and Other Tick-Borne Diseases, Department of Prevention of Rabies and Other Infectious Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia;
| | - Ivana Bogdan
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia; (V.S.); (I.B.)
| | - Aleksandar Potkonjak
- Department of Veterinary Medicine, Faculty of Agriculture, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Sara Savić
- Scientific Veterinary Institute “Novi Sad”, 21000 Novi Sad, Serbia;
| | - Dasiel Obregón
- School of Environmental Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Alejandro Cabezas-Cruz
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, F-94700 Maisons-Alfort, France
- Correspondence: (P.B.); (A.C.-C.)
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13
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New and Confirmed Foci of Tick-Borne Encephalitis Virus (TBEV) in Northern Germany Determined by TBEV Detection in Ticks. Pathogens 2022; 11:pathogens11020126. [PMID: 35215070 PMCID: PMC8876329 DOI: 10.3390/pathogens11020126] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 12/30/2022] Open
Abstract
Tick-borne encephalitis (TBE) is a tick-transmitted, virus-induced neurological disease with potentially fatal outcomes in humans and animals. Virus transmission takes places in so-called tick-borne encephalitis virus (TBEV) microfoci, which constitute small areas of sustained virus circulation. In southern Germany, TBEV has been endemic for decades; however, a northward expansion of risk areas, based on disease incidence in the human population, has been observed in recent years. The present study investigated TBEV occurrence in questing ticks at eight locations in the federal state of Lower Saxony, northwestern Germany, chosen due to reported associations with human TBE cases (N = 4) or previous virus detection (N = 4). A total of 20,056 ticks were collected in 2020 and 2021 and tested for TBEV RNA in pools of ten nymphs or five adults by quantitative reverse transcription-PCR (RT-qPCR). Positive results were confirmed by RT amplification of the viral E gene. In total, 18 pools from five different sampling locations were positive for TBEV RNA. One previously unknown transmission focus was detected, while ongoing virus circulation was confirmed at the four further locations. Phylogenetic analysis showed that two different virus strains with different origins circulate in the locations identified as natural foci.
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14
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Boyer PH, Baldinger L, Degeilh B, Wirth X, Kamdem CM, Hansmann Y, Zilliox L, Boulanger N, Jaulhac B. The emerging tick-borne pathogen Neoehrlichia mikurensis: first French case series and vector epidemiology. Emerg Microbes Infect 2021; 10:1731-1738. [PMID: 34432610 PMCID: PMC8425734 DOI: 10.1080/22221751.2021.1973347] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/22/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022]
Abstract
Neoehrlichia mikurensis is an intracellular bacterium transmitted in Europe and Asia by ticks of the Ixodes ricinus complex. Interest in this bacterium has increased since it was demonstrated to be responsible for febrile syndromes in patients. To date, most clinical cases have been reported in northern Europe, but case series have also been described in central Europe and China. Notably, thrombotic events occurred during the course of the disease. We investigated the presence of N. mikurensis in 10,885 I. ricinus nymphs in two regions of France (Alsace and Brittany) collected between 2013 and 2020 and in 934 patients suspected of human granulocytic anaplasmosis in Alsace, an endemic area for Lyme borreliosis, using a specific PCR assay. N. mikurensis was detected in 5.42% of the ticks from Alsace, whereas only one (0.03%) tick was found to be positive in Brittany. Spatiotemporal disparities were also noticed within the Alsace region over the four collection sites investigated, and a significant increase in the prevalence of nymphs carrying N. mikurensis was also observed in the last three years of collection. Four out of 934 screened patients were found to be positive for N. mikurensis. Two had malignancies, and the other two were apparently immunocompetent. Superficial thrombosis was noticed in one patient, and long-lasting bacteremia was noted in another patient. These four patients are the first clinical cases of neoehrlichiosis described in France. We suggest including N. mikurensis in the differential diagnosis of post-tick bite febrile syndromes to treat patients and prevent the occurrence of thrombotic complications.
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Affiliation(s)
- Pierre H. Boyer
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
| | - Lisa Baldinger
- French National Reference Center for Borrelia, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Brigitte Degeilh
- Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Rennes, Rennes Cedex 9, France
- Laboratoire de Parasitologie Médicale Faculté de Médecine, Université de Rennes1., Rennes cedex, France
| | - Xavier Wirth
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
| | - Chasy Mewa Kamdem
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
| | - Yves Hansmann
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
- Department of Infectious Disease, Strasbourg University Hospital, Strasbourg, France
- Groupe d'Étude de la Borréliose de Lyme (GEBLY), Strasbourg, France
| | - Laurence Zilliox
- French National Reference Center for Borrelia, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Nathalie Boulanger
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
- French National Reference Center for Borrelia, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Groupe d'Étude de la Borréliose de Lyme (GEBLY), Strasbourg, France
| | - Benoît Jaulhac
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, Strasbourg, France
- French National Reference Center for Borrelia, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Groupe d'Étude de la Borréliose de Lyme (GEBLY), Strasbourg, France
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15
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Dollat M, Bellanger AP, Millon L, Chirouze C, Lepiller Q, Marguet P. Knowledge and vaccination practices among family physicians in northeastern France regarding tick-borne encephalitis virus. Ticks Tick Borne Dis 2021; 12:101774. [PMID: 34175735 DOI: 10.1016/j.ttbdis.2021.101774] [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] [Received: 01/06/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 10/21/2022]
Abstract
Tick-borne encephalitis (TBE) cases have been emerging in Europe. The Franche-Comte area, in northeastern France, borders Switzerland, but the two countries differ in their approach to TBE surveillance and prevention. Because family physicians (FPs) are in direct contact with the local population, at-risk of infected tick bites, they need to be well aware of TBE epidemiology and management. An observational survey was performed in 2019 in order to investigate Franche-Comte physicians' knowledge and vaccination practices with regard to TBE. Standardized online questionnaires were sent to a list of FPs practicing in Franche-Comte. The questionnaires included socio-demographic details, questions about TBE knowledge, symptomatology and vaccination. The response rate was 14.7%. FPs practicing in rural areas reported a significantly higher frequency of consultations for tick bites. While 81% of FPs indicated that they had some knowledge about TBE, only 20% were at ease with its clinical symptomatology. Thirty-one % of the FP participants performed TBE vaccinations. A general lack of knowledge about TBE and its clinical symptoms was observed in this survey. FPs play an essential role in screening and preventing TBE, especially those practicing in rural areas and in areas bordering Switzerland.
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Affiliation(s)
- Marie Dollat
- Emergency Department, Pontarlier Regional Hospital, 25300 Pontarlier, France
| | - Anne-Pauline Bellanger
- Department of Parasitology-Mycology, Besançon University Hospital, 25000 Besancon, France.
| | - Laurence Millon
- Department of Parasitology-Mycology, Besançon University Hospital, 25000 Besancon, France
| | - Catherine Chirouze
- Department of Infectious and Tropical Diseases, Besançon University Hospital, 25000 Besancon, France
| | - Quentin Lepiller
- Department of Virology, Besançon University Hospital, 25000 Besancon, France
| | - Philippe Marguet
- Emergency Department, Pontarlier Regional Hospital, 25300 Pontarlier, France
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16
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Banović P, Obregón D, Mijatović D, Simin V, Stankov S, Budakov-Obradović Z, Bujandrić N, Grujić J, Sević S, Turkulov V, Díaz-Sánchez AA, Cabezas-Cruz A. Tick-Borne Encephalitis Virus Seropositivity among Tick Infested Individuals in Serbia. Pathogens 2021; 10:301. [PMID: 33807559 PMCID: PMC8001322 DOI: 10.3390/pathogens10030301] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/13/2021] [Accepted: 03/02/2021] [Indexed: 12/12/2022] Open
Abstract
Tick-borne encephalitis (TBE), caused by the TBE virus (TBEV), is a life-threatening disease with clinical symptoms ranging from non-specific to severe inflammation of the central nervous system. Despite TBE is a notifiable disease in Serbia since 2004, there is no active TBE surveillance program for the serologic or molecular screening of TBEV infection in humans in the country. This prospective cohort study aimed to assess the TBEV exposure among tick-infested individuals in Serbia during the year 2020. A total of 113 individuals exposed to tick bites were recruited for the study and screened for anti-TBEV antibodies using a commercial indirect fluorescent antibody test (IFA) test. Blood samples from 50 healthy donors not exposed to tick bites were included as a control group. Most of the enrolled patients reported infestations with one tick, being I. ricinus the most frequent tick found in the participants. The TBEV seroprevalence was higher (13.27%, 15 total 113) in tick-infested individuals than in healthy donors (4%, 2 total 50), although the difference was not significant. Notably, male individuals exposed to tick bites showed five times higher relative risk (RR) of being TBEV-seropositive than healthy donors of the same gender (RR= 5.1, CI = 1.6-19; p = 0.007). None of the seropositive individuals developed clinical manifestations of TBE, but the first clinical-stage of Lyme borreliosis (i.e., erythema migrans) was detected in seven of them. Potential TBEV foci were identified in rural areas, mostly in proximity or within the Fruška Gora mountain. We conclude that the Serbian population is at high risk of TBEV exposure. Further epidemiological studies should focus on potential TBEV foci identified in this study. The implementation of active surveillance for TBEV might contribute to evaluating the potential negative impact of TBE in Serbia.
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Affiliation(s)
- Pavle Banović
- Ambulance for Lyme Borreliosis and Other Tick-Borne Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia;
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
| | - Dasiel Obregón
- School of Environmental Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
- Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, SP 13400-970, Brazil
| | - Dragana Mijatović
- Ambulance for Lyme Borreliosis and Other Tick-Borne Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia;
| | - Verica Simin
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia; (V.S.); (S.S.)
| | - Srdjan Stankov
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia; (V.S.); (S.S.)
| | - Zorana Budakov-Obradović
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
| | - Nevenka Bujandrić
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
| | - Jasmina Grujić
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
| | - Siniša Sević
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | - Vesna Turkulov
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia; (Z.B.-O.); (N.B.); (J.G.); (S.S.); (V.T.)
- Clinic for Infectious Diseases, Clinical Center of Vojvodina, 21000 Novi Sad, Serbia
| | | | - Alejandro Cabezas-Cruz
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, F-94700 Maisons-Alfort, France
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17
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Immunogenicity and safety of rapid scheme vaccination against tick-borne encephalitis in HIV-1 infected persons. Epidemiol Infect 2021; 149:e41. [PMID: 33504405 PMCID: PMC8060836 DOI: 10.1017/s0950268821000194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Tick-borne encephalitis (TBE) is a vector-borne infection associated with a variety of potentially serious complications and sequelae. Vaccination against TBE is strongly recommended for people living in endemic areas. There are two TBE vaccination schemes – standard and rapid – which differ in the onset of protection. With vaccination in a rapid schedule, protection starts as early as 4 weeks after the first dose and is therefore especially recommended for non-immune individuals travelling to endemic areas. Both schemes work reliably in immunocompetent individuals, but only little is known about how TBE vaccination works in people with HIV infection. Our aim was to assess the immunogenicity and safety of the rapid scheme of TBE vaccination in HIV-1 infected individuals. Concentrations of TBE-specific IgG > 126 VIEU/ml were considered protective. The seroprotection rate was 35.7% on day 28 and 39.3% on day 60. There were no differences between responders and non-responders in baseline and nadir CD4 + T lymphocytes. No serious adverse events were observed after vaccination. The immunogenicity of the TBE vaccination was unsatisfactory in our study and early protection was only achieved in a small proportion of vaccinees. Therefore, TBE vaccination with the rapid scheme cannot be recommended for HIV-1 infected individuals.
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Wald M, Merisor S, Zachary P, Augereau O, Gravier S, Jaulhac B, De Briel D, Velay A, Gregorowicz G, Martinot M. Microbiological Outcomes Associated With Low Leukocyte Counts in Cerebrospinal Fluid. Open Forum Infect Dis 2020; 8:ofaa597. [PMID: 33575417 PMCID: PMC7863864 DOI: 10.1093/ofid/ofaa597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/03/2020] [Indexed: 11/17/2022] Open
Abstract
The significance of low leukocyte counts in cerebrospinal fluid (CSF) remains unclear. We performed a 2-year retrospective study to examine microbiological outcomes associated with CSF leukocytes at 6–10/mm3. Of the 178 samples examined, we detected positive results for 11 samples, including 5 cases of tick-borne encephalitis virus infection.
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Affiliation(s)
- Mathieu Wald
- Infectious Diseases Department, Hôpitaux Civils de Colmar, France
| | - Simona Merisor
- Infectious Diseases Department, Hôpitaux Civils de Colmar, France
| | - Pierre Zachary
- Microbiology Department, Hôpitaux Universitaires de Strasbourg, France
| | | | - Simon Gravier
- Infectious Diseases Department, Hôpitaux Civils de Colmar, France
| | - Benoit Jaulhac
- Microbiology Department, Hôpitaux Universitaires de Strasbourg, France
| | | | - Aurélie Velay
- Virology Department, Hôpitaux Universitaires de Strasbourg
| | | | - Martin Martinot
- Infectious Diseases Department, Hôpitaux Civils de Colmar, France
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19
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Constant O, Bollore K, Clé M, Barthelemy J, Foulongne V, Chenet B, Gomis D, Virolle L, Gutierrez S, Desmetz C, Moares RA, Beck C, Lecollinet S, Salinas S, Simonin Y. Evidence of Exposure to USUV and WNV in Zoo Animals in France. Pathogens 2020; 9:pathogens9121005. [PMID: 33266071 PMCID: PMC7760666 DOI: 10.3390/pathogens9121005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/25/2020] [Accepted: 11/29/2020] [Indexed: 12/12/2022] Open
Abstract
West Nile virus (WNV) and Usutu virus (USUV) are zoonotic arboviruses. These flaviviruses are mainly maintained in the environment through an enzootic cycle involving mosquitoes and birds. Horses and humans are incidental, dead-end hosts, but can develop severe neurological disorders. Nevertheless, there is little data regarding the involvement of other mammals in the epidemiology of these arboviruses. In this study, we performed a serosurvey to assess exposure to these viruses in captive birds and mammals in a zoo situated in the south of France, an area described for the circulation of these two viruses. A total of 411 samples comprising of 70 species were collected over 16 years from 2003 to 2019. The samples were first tested by a competitive enzyme-linked immunosorbent assay. The positive sera were then tested using virus-specific microneutralization tests against USUV and WNV. USUV seroprevalence in birds was 10 times higher than that of WNV (14.59% versus 1.46%, respectively). Among birds, greater rhea (Rhea Americana) and common peafowl (Pavo cristatus) exhibited the highest USUV seroprevalence. Infections occurred mainly between 2016-2018 corresponding to a period of high circulation of these viruses in Europe. In mammalian species, antibodies against WNV were detected in one dama gazelle (Nanger dama) whereas serological evidence of USUV infection was observed in several Canidae, especially in African wild dogs (Lycaon pictus). Our study helps to better understand the exposure of captive species to WNV and USUV and to identify potential host species to include in surveillance programs in zoos.
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Affiliation(s)
- Orianne Constant
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Karine Bollore
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Marion Clé
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Vincent Foulongne
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Baptiste Chenet
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | - David Gomis
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | - Laurie Virolle
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | | | - Caroline Desmetz
- bBioCommunication en CardioMétabolique (BC2M), Montpellier University, 34000 Montpellier, France;
| | - Rayane Amaral Moares
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Cécile Beck
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Sylvie Lecollinet
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Sara Salinas
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Yannick Simonin
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
- Correspondence: ; Tel.: +33-(0)4-3435-9114
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20
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Khamassi Khbou M, Romdhane R, Foughali AA, Sassi L, Suin V, Rekik M, Benzarti M. Presence of antibodies against tick-borne encephalitis virus in sheep in Tunisia, North Africa. BMC Vet Res 2020; 16:441. [PMID: 33183295 PMCID: PMC7664096 DOI: 10.1186/s12917-020-02651-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 10/28/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Tick-borne encephalitis virus (TBEv) is a flavivirus that circulates in a complex cycle involving small mammals as amplifying hosts and ticks as vectors and reservoirs. The current study aimed to investigate the presence of TBEv in Tunisian sheep. A sample of 263 adult sheep were selected from 6 localities where Ixodes ricinus is well established. Sera were screened using ELISA for TBEv IgG detection, then the doubtful and positive sera were tested by the seroneutralisation test (SNT) and screened for West Nile Virus (WNv) IgG for cross-reaction assessment. RESULTS The ELISA for TBEv IgG detected one positive serum and 17 borderlines. The SNT showed one positive serum among the 18 tested, giving an overall antibody prevalence of 0.38% (95% CI = 0.07-2.12%). All but one serum tested negative to WNv ELISA. None of the sheep farmers reported neurological signs among sheep or humans in their households. CONCLUSIONS The results may indicate the circulation of TBEv for the first time in Tunisia and in North Africa. Further studies based on either virus isolation or RNA detection, are needed to confirm the presence of TBEv in North Africa.
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Affiliation(s)
- Médiha Khamassi Khbou
- Laboratory of Infectious Animal Diseases, Zoonosis and Sanitary Regulation, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia.
- Laboratory of Parasitology, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia.
| | - Rihab Romdhane
- Laboratory of Parasitology, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Asma Amina Foughali
- Laboratory of Parasitology, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Limam Sassi
- Laboratory of Parasitology, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Vanessa Suin
- Viral Diseases Service, Sciensano. Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - Mourad Rekik
- International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, 11195, Amman, Jordan
| | - M'hammed Benzarti
- Laboratory of Infectious Animal Diseases, Zoonosis and Sanitary Regulation, Institution of Agricultural Research and Higher Education, Univ. Manouba, National School of Veterinary Medicine of Sidi Thabet, 2020, Sidi Thabet, Tunisia
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21
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Disappearance of TBEV Circulation among Rodents in a Natural Focus in Alsace, Eastern France. Pathogens 2020; 9:pathogens9110930. [PMID: 33182764 PMCID: PMC7697581 DOI: 10.3390/pathogens9110930] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/02/2020] [Accepted: 11/07/2020] [Indexed: 12/17/2022] Open
Abstract
Tick-borne encephalitis virus (TBEV) depends mainly on a fragile mode of transmission, the co-feeding between infected nymphs and larvae on rodents, and thus persists under a limited set of biotic and abiotic conditions. If these conditions change, natural TBEV foci might be unstable over time. We conducted a longitudinal study over seven years in a mountain forest in Alsace, Eastern France, located at the western border of known TBEV distribution. The objectives were (i) to monitor the persistence of TBEV circulation between small mammals and ticks and (ii) to discuss the presence of TBEV circulation in relation to the synchronous activity of larvae and nymphs, to the densities of questing nymphs and small mammals, and to potential changes in meteorological conditions and deer densities. Small mammals were trapped five times per year from 2012 to 2018 to collect blood samples and record the presence of feeding ticks, and were then released. Questing nymphs were collected twice a year. Overall, 1344 different small mammals (Myodes glareolus and Apodemus flavicollis) were captured and 2031 serum samples were tested for the presence of antibodies against TBEV using an in-house ELISA. Seropositive rodents (2.1%) were only found from 2012 to 2015, suggesting that the virus disappeared afterwards. In parallel, we observed unusual variations in inter-annual nymph abundance and intra-annual larval activity that could be related to exceptional meteorological conditions. Changes in the densities of questing nymphs and deer associated with the natural stochastic variations in the frequency of contacts between rodents and infected ticks may have contributed to the endemic fadeout of TBEV on the study site. Further studies are needed to assess whether such events occur relatively frequently in the area, which could explain the low human incidence of TBE in Alsace and even in other areas of France.
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22
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Albinsson B, Jääskeläinen AE, Värv K, Jelovšek M, GeurtsvanKessel C, Vene S, Järhult JD, Reusken C, Golovljova I, Avšič-Županc T, Vapalahti O, Lundkvist Å. Multi-laboratory evaluation of ReaScan TBE IgM rapid test, 2016 to 2017. ACTA ACUST UNITED AC 2020; 25. [PMID: 32234120 PMCID: PMC7118343 DOI: 10.2807/1560-7917.es.2020.25.12.1900427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Background Tick-borne encephalitis (TBE) is a potentially severe neurological disease caused by TBE virus (TBEV). In Europe and Asia, TBEV infection has become a growing public health concern and requires fast and specific detection. Aim In this observational study, we evaluated a rapid TBE IgM test, ReaScan TBE, for usage in a clinical laboratory setting. Methods Patient sera found negative or positive for TBEV by serological and/or molecular methods in diagnostic laboratories of five European countries endemic for TBEV (Estonia, Finland, Slovenia, the Netherlands and Sweden) were used to assess the sensitivity and specificity of the test. The patients’ diagnoses were based on other commercial or quality assured in-house assays, i.e. each laboratory’s conventional routine methods. For specificity analysis, serum samples from patients with infections known to cause problems in serology were employed. These samples tested positive for e.g. Epstein–Barr virus, cytomegalovirus and Anaplasma phagocytophilum, or for flaviviruses other than TBEV, i.e. dengue, Japanese encephalitis, West Nile and Zika viruses. Samples from individuals vaccinated against flaviviruses other than TBEV were also included. Altogether, 172 serum samples from patients with acute TBE and 306 TBE IgM negative samples were analysed. Results Compared with each laboratory’s conventional methods, the tested assay had similar sensitivity and specificity (99.4% and 97.7%, respectively). Samples containing potentially interfering antibodies did not cause specificity problems. Conclusion Regarding diagnosis of acute TBEV infections, ReaScan TBE offers rapid and convenient complementary IgM detection. If used as a stand-alone, it can provide preliminary results in a laboratory or point of care setting.
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Affiliation(s)
- Bo Albinsson
- Laboratory of Clinical Microbiology, Uppsala, Sweden.,Department of Medical Biochemistry and Microbiology, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
| | - Anu E Jääskeläinen
- Helsinki University Hospital Laboratory Services (HUSLAB), Department of Virology and Immunology, Helsinki, Finland.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Kairi Värv
- Department of Virology and Immunology, National Institute for Health Development, Tallinn, Estonia.,Department of Medical Biochemistry and Microbiology, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
| | - Mateja Jelovšek
- Institute for Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Corine GeurtsvanKessel
- WHO Collaborating Centre for Arbovirus and Viral Haemorrhagic Fever Reference and Research, Department of Virology, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Sirkka Vene
- Department of Medical Biochemistry and Microbiology, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
| | - Josef D Järhult
- Department of Medical Sciences, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
| | - Chantal Reusken
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.,WHO Collaborating Centre for Arbovirus and Viral Haemorrhagic Fever Reference and Research, Department of Virology, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Irina Golovljova
- Department of Virology and Immunology, National Institute for Health Development, Tallinn, Estonia.,Department of Medical Biochemistry and Microbiology, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
| | - Tatjana Avšič-Županc
- Institute for Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Olli Vapalahti
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.,Helsinki University Hospital Laboratory Services (HUSLAB), Department of Virology and Immunology, Helsinki, Finland.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Åke Lundkvist
- Department of Medical Biochemistry and Microbiology, Zoonosis Science Centre, Uppsala University, Uppsala, Sweden
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23
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Paulsen KM, Lamsal A, Bastakoti S, Pettersson JHO, Pedersen BN, Stiasny K, Haglund M, Smura T, Vapalahti O, Vikse R, Alfsnes K, Andreassen ÅK. High-throughput sequencing of two European strains of tick-borne encephalitis virus (TBEV), Hochosterwitz and 1993/783. Ticks Tick Borne Dis 2020; 12:101557. [PMID: 33080519 DOI: 10.1016/j.ttbdis.2020.101557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 12/22/2022]
Abstract
Tick-borne encephalitis virus (TBEV) is a medically important arbovirus, widespread in Europe and Asia. The virus is primarily transmitted to humans and animals by bites from ticks and, in rare cases, by consumption of unpasteurized dairy products. The aim of this study was to sequence and characterize two TBEV strains with amplicon sequencing by designing overlapping primers. The amplicon sequencing, via Illumina MiSeq, covering nearly the entire TBEV genome, was successful: We retrieved and characterized the complete polyprotein sequence of two TBEV strains, Hochosterwitz and 1993/783 from Austria and Sweden, respectively. In this study the previous phylogenetic analysis of both strains was confirmed to be of the European subtypes of TBEV (TBEV-Eu) by whole genome sequencing. The Hochosterwitz strain clustered with the two strains KrM 93 and KrM 213 from South Korea, and the 1993/783 strain clustered together with the NL/UH strain from the Netherlands. Our study confirms the suitability and rapidness of the high-throughput sequencing method used to produce complete TBEV genomes from TBEV samples of high viral load giving high-molecular-weight cDNA with large overlapping amplicons.
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Affiliation(s)
- Katrine M Paulsen
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Virology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway
| | - Alaka Lamsal
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Virology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway; University of South-Eastern Norway, Department of Natural Science and Environmental Health, Gullbringvegen 36, NO-3800, Bø, Norway
| | - Srijana Bastakoti
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Virology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway
| | - John H-O Pettersson
- Uppsala University, Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden; The University of Sydney, Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, Sydney, Australia
| | - Benedikte N Pedersen
- University of South-Eastern Norway, Department of Natural Science and Environmental Health, Gullbringvegen 36, NO-3800, Bø, Norway
| | - Karin Stiasny
- Medical University of Vienna, Center for Virology, Kinderspitalgasse 15, 1090, Vienna, Austria
| | - Mats Haglund
- Kalmar County Hospital, Department of Infectious Diseases, SE-391 85, Kalmar, Sweden
| | - Teemu Smura
- University of Helsinki, Department of Virology, Medicum, Helsinki, Finland
| | - Olli Vapalahti
- University of Helsinki, Department of Virology, Medicum, Helsinki, Finland; University of Helsinki, Department of Veterinary Biosciences, Helsinki, Finland; University of Helsinki and Helsinki University Hospital, Department of Virology and Immunology, Helsinki, Finland
| | - Rose Vikse
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Virology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway
| | - Kristian Alfsnes
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Bacteriology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway
| | - Åshild K Andreassen
- Norwegian Institute of Public Health, Division for Infection Control and Environmental Health, Department of Virology, PO-Box 222 Skøyen, NO-0213, Oslo, Norway; University of South-Eastern Norway, Department of Natural Science and Environmental Health, Gullbringvegen 36, NO-3800, Bø, Norway.
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24
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Rónai Z, Egyed L. Survival of Tick-Borne Encephalitis Virus in Goat Cheese and Milk. FOOD AND ENVIRONMENTAL VIROLOGY 2020; 12:264-268. [PMID: 32388731 DOI: 10.1007/s12560-020-09427-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Survival of tick-borne encephalitis virus was studied from pasteurized and unpasteurized goat milk and from salted/unsalted and spiced/unspiced cheese made from goat milk inoculated with low and high litres of infective virus. Both soft (63 °C, 30 min) and fast (72 °C, 15 s) pasteurization conditions destroyed viable virus particles. A small amount of infective virus could be detected only for 5‒10 days from milk, and from unsalted cheese. From milk inoculated with a higher amount of virus, infectious viral particles were detectable for 20‒25 days and from unsalted cheese samples for 10‒15 days, independently of the use of spices. Pasteurization and salt treatment made goat milk and cheese safely consumable. These two methods must be used when making any human food from goat milk to avoid milk-borne human TBEV infections.
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Affiliation(s)
- Zsuzsanna Rónai
- Molecular Biology Department, National Food Chain Safety Office, Veterinary Diagnostic Institute, Tábornok u 2, Budapest, 1143, Hungary
| | - László Egyed
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary.
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25
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Michel F, Ziegler U, Fast C, Eiden M, Klaus C, Dobler G, Stiasny K, Groschup MH. Role of ducks in the transmission cycle of tick-borne encephalitis virus? Transbound Emerg Dis 2020; 68:499-508. [PMID: 32599659 DOI: 10.1111/tbed.13704] [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] [Received: 03/18/2020] [Revised: 06/15/2020] [Accepted: 06/21/2020] [Indexed: 12/30/2022]
Abstract
Tick-borne encephalitis virus (TBEV), a member of the family Flaviviridae, is the most important tick-transmitted arbovirus in Europe. It can cause severe illnesses in humans and in various animal species. The main mechanism for the spread of TBEV into new areas is considered to be the translocation of infected ticks. To find out whether ducks can function as a natural virus reservoir in addition to serving as passive transport vectors, we carried out an experimental TBEV challenge study to reveal their susceptibility and resulting pathogenesis. Nineteen ducks were inoculated subcutaneously with TBEV strain 'Neudoerfl' and monitored for 21 days. Blood, oropharyngeal and cloacal swabs were collected throughout the experiment and organ samples upon necropsy at the end of the study. All samples were tested for TBEV-RNA by real-time polymerase chain reaction. TBEV-specific antibodies were determined by virus neutralization test and ELISA. Organ samples were examined histopathologically and by immunohistochemistry. The inoculated ducks did not show any clinical symptoms. TBEV-specific RNA was detected in all brain samples as well as in a few blood and swab samples. Moreover, all challenged birds produced TBEV antibodies and showed a mild to severe acute to subacute necrotizing encephalitis. TBEV-specific antigen was detected in the brain of 14 ducks by immunohistochemistry. The short and low viremic phases, as well as the low virus load in tissues, suggest that ducks should not be considered as reservoir hosts. However, due to the high antibody levels, ducks can serve as sentinel species for the detection of natural TBEV foci.
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Affiliation(s)
- Friederike Michel
- Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Ute Ziegler
- Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Christine Fast
- Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Martin Eiden
- Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Christine Klaus
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, Federal Research Institute for Animal Health, Jena, Germany
| | - Gerhard Dobler
- Department of Virology and Rickettsiology, Bundeswehr Institute of Microbiology, Munich, Germany
| | - Karin Stiasny
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Martin H Groschup
- Friedrich-Loeffler-Institut, Institute of Novel and Emerging Infectious Diseases, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
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26
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Botelho-Nevers E, Gagneux-Brunon A, Velay A, Guerbois-Galla M, Grard G, Bretagne C, Mailles A, Verhoeven PO, Pozzetto B, Gonzalo S, Fafi-Kremer S, Leparc-Goffart I, Pillet S. Tick-Borne Encephalitis in Auvergne-Rhône-Alpes Region, France, 2017-2018. Emerg Infect Dis 2020; 25:1944-1948. [PMID: 31538929 PMCID: PMC6759258 DOI: 10.3201/eid2510.181923] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Three autochthonous cases of tick-borne encephalitis (TBE) acquired in rural areas of France where Lyme borreliosis, but not TBE, is endemic highlight the emergence of TBE in new areas. For patients with neurologic involvement who have been in regions where Ixodes ticks circulate, clinicians should test for TBE virus and other tickborne viruses.
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27
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Deviatkin AA, Kholodilov IS, Vakulenko YA, Karganova GG, Lukashev AN. Tick-Borne Encephalitis Virus: An Emerging Ancient Zoonosis? Viruses 2020; 12:v12020247. [PMID: 32102228 PMCID: PMC7077300 DOI: 10.3390/v12020247] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/10/2020] [Accepted: 02/19/2020] [Indexed: 12/19/2022] Open
Abstract
Tick-borne encephalitis (TBE) is one of the most important viral zoonosis transmitted by the bite of infected ticks. In this study, all tick-borne encephalitis virus (TBEV) E gene sequences available in GenBank as of June 2019 with known date of isolation (n = 551) were analyzed. Simulation studies showed that a sample bias could significantly affect earlier studies, because small TBEV datasets (n = 50) produced non-overlapping intervals for evolutionary rate estimates. An apparent lack of a temporal signal in TBEV, in general, was found, precluding molecular clock analysis of all TBEV subtypes in one dataset. Within all subtypes and most of the smaller groups in these subtypes, there was evidence of many medium- and long-distance virus transfers. These multiple random events may play a key role in the virus spreading. For some groups, virus diversity within one territory was similar to diversity over the whole geographic range. This is best exemplified by the virus diversity observed in Switzerland or Czech Republic. These two countries yielded most of the known European subtype Eu3 subgroup sequences, and the diversity of viruses found within each of these small countries is comparable to that of the whole Eu3 subgroup, which is prevalent all over Central and Eastern Europe. Most of the deep tree nodes within all three established TBEV subtypes dated less than 300 years back. This could be explained by the recent emergence of most of the known TBEV diversity. Results of bioinformatics analysis presented here, together with multiple field findings, suggest that TBEV may be regarded as an emerging disease.
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Affiliation(s)
- Andrei A. Deviatkin
- Laboratory of Molecular Biology and Biochemistry, Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119048 Moscow, Russia;
- Laboratory of Postgenomic Technologies, Izmerov Research Institute of Occupational Health, 105275 Moscow, Russia
- Correspondence: ; Tel.: +7-906-739-0860
| | - Ivan S. Kholodilov
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides (FSBSI “Chumakov FSC R&D IBP RAS), 108819 Moscow, Russia; (I.S.K.); (G.G.K.)
| | - Yulia A. Vakulenko
- Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov First Moscow State Medical University, 119435 Moscow, Russia;
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Galina G. Karganova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides (FSBSI “Chumakov FSC R&D IBP RAS), 108819 Moscow, Russia; (I.S.K.); (G.G.K.)
- Department of Organization and Technology of Immunobiological Preparations, Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Alexander N. Lukashev
- Laboratory of Molecular Biology and Biochemistry, Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119048 Moscow, Russia;
- Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov First Moscow State Medical University, 119435 Moscow, Russia;
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28
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Lyme borreliosis and other tick-borne diseases. Guidelines from the French Scientific Societies (I): prevention, epidemiology, diagnosis. Med Mal Infect 2019; 49:318-334. [DOI: 10.1016/j.medmal.2019.04.381] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 04/09/2019] [Indexed: 12/17/2022]
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Ocias LF, Waldeck M, Hallén I, Nørgaard M, Krogfelt KA. Transnational exchange of surveillance data reveals previously unrecognized TBEV microfocus. Eur J Public Health 2019; 29:631-633. [PMID: 31321418 PMCID: PMC6660106 DOI: 10.1093/eurpub/ckz059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Tick-borne encephalitis (TBE) is a tick-borne infection with an increasing presence in many European countries. It is caused by the TBE virus (TBEV), a flavivirus transmitted by the Ixodes ricinus tick in northern Europe. In Denmark, the virus exists endemically on the island of Bornholm. However, a large proportion of Danish cases are also imported from Sweden, where the incidence of TBE has steadily been increasing during the last few decades. With the prospect of expanding risk areas due to climate change, TBE surveillance data exchange between countries could facilitate the identification of new TBEV microfoci and thereby aid healthcare workers in the issuing of vaccination recommendations. We present data from a collaborative effort between Denmark and Sweden on the surveillance of TBEV that resulted in the uncovering of a previously unrecognized possible TBEV microfocus in central Sweden.
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Affiliation(s)
- Lukas Frans Ocias
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark.,Department of Clinical Microbiology, Rigshospitalet, Copenhagen Denmark
| | - Mattias Waldeck
- Regional Office of Communicable Disease Control and Prevention, Skåne County, Sweden
| | - Ingemar Hallén
- Department of Communicable Disease Control and Prevention, Värmland County, Sweden
| | - Mathilde Nørgaard
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - Karen Angeliki Krogfelt
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark.,Department of Science and Environment, Roskilde University, Denmark
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30
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Gocko X, Lenormand C, Lemogne C, Bouiller K, Gehanno JF, Rabaud C, Perrot S, Eldin C, de Broucker T, Roblot F, Toubiana J, Sellal F, Vuillemet F, Sordet C, Fantin B, Lina G, Sobas C, Jaulhac B, Figoni J, Chirouze C, Hansmann Y, Hentgen V, Caumes E, Dieudonné M, Picone O, Bodaghi B, Gangneux JP, Degeilh B, Partouche H, Saunier A, Sotto A, Raffetin A, Monsuez JJ, Michel C, Boulanger N, Cathebras P, Tattevin P. Lyme borreliosis and other tick-borne diseases. Guidelines from the French scientific societies. Med Mal Infect 2019; 49:296-317. [PMID: 31257066 DOI: 10.1016/j.medmal.2019.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 05/31/2019] [Indexed: 12/19/2022]
Affiliation(s)
- X Gocko
- Département de médecine générale, faculté de médecine, 42000 Saint-Étienne, France
| | - C Lenormand
- Dermatologie, hôpitaux universitaires de Strasbourg et faculté de médecine, université de Strasbourg, 67000 Strasbourg, France
| | - C Lemogne
- Psychiatrie, hôpital européen Georges-Pompidou, AP-HP.5, Inserm U1266, université Paris, 75015 Descartes, Paris, France
| | - K Bouiller
- Maladies infectieuses et tropicales, centre hospitalo-universitaire, UMR CNRS 6249 université Bourgogne Franche Comté, 25000 Besançon, France
| | - J-F Gehanno
- Médecine du travail, centre hospitalo-universitaire, 76000 Rouen, France
| | - C Rabaud
- Maladies infectieuses et tropicales, centre hospitalo-universitaire, 54100 Nancy, France
| | - S Perrot
- Centre d'étude et de traitement de la douleur, hôpital Cochin, 75014 Paris, France
| | - C Eldin
- Maladies infectieuses et tropicales, IHU Méditerranée infection, centre hospitalo-universitaire Timone, 13000 Marseille, France
| | - T de Broucker
- Neurologie, hôpital Delafontaine, 93200 Saint-DenisFrance
| | - F Roblot
- Inserm U1070, Maladies infectieuses et tropicales, centre hospitalo-universitaire, 86000 Poitiers, France
| | - J Toubiana
- Service de pédiatrie générale et maladies infectieuses, hôpital Necker-Enfants malades, AP-HP, 75014 Paris, France
| | - F Sellal
- Département de neurologie, hôpitaux Civil, 68000 Colmar, France
| | - F Vuillemet
- Département de neurologie, hôpitaux Civil, 68000 Colmar, France
| | - C Sordet
- Rhumatologie, centre hospitalo-universitaire, 67000 Strasbourg, France
| | - B Fantin
- Médecine interne, hôpital Beaujon, université Paris Diderot, Inserm UMR 1137 IAME, 92110 Clichy, France
| | - G Lina
- Laboratoire de bactériologie et CNR des Borrelia, faculté de médecine et centre hospitalo-universitaire, 67000 Strasbourg, France
| | - C Sobas
- Microbiologie, centre hospitalo-universitaire, 69000 Lyon, France
| | - B Jaulhac
- Laboratoire de bactériologie et CNR des Borrelia, faculté de médecine et centre hospitalo-universitaire, 67000 Strasbourg, France
| | - J Figoni
- Maladies infectieuses et tropicales, hôpital Avicenne, 930222 Bobigny, France; Santé publique France, 94410 St.-Maurice, France
| | - C Chirouze
- Maladies infectieuses et tropicales, centre hospitalo-universitaire, UMR CNRS 6249 université Bourgogne Franche Comté, 25000 Besançon, France
| | - Y Hansmann
- Maladies infectieuses et tropicales, centre hospitalo-universitaire, 67000 Strasbourg, France
| | - V Hentgen
- Pédiatrie, centre hospitalier, 78000 Versailles, France
| | - E Caumes
- Maladies infectieuses et tropicales, hôpital La Pitié-Salpêtrière, 75013 Paris, France
| | - M Dieudonné
- Centre Max-Weber, CNRS, université Lyon 2, 69000 Lyon, France
| | - O Picone
- Maternité Louis-Mourier, 92700 Colombes, France
| | - B Bodaghi
- Ophtalmologie, hôpital La Pitié-Salpêtrière, 75013 Paris, France
| | - J-P Gangneux
- Laboratoire de parasitologie-mycologie, UMR_S 1085 Irset, université Rennes1-Inserm-EHESP, centre hospitalo-universitaire, 35000 Rennes, France
| | - B Degeilh
- Laboratoire de parasitologie-mycologie, UMR_S 1085 Irset, université Rennes1-Inserm-EHESP, centre hospitalo-universitaire, 35000 Rennes, France
| | - H Partouche
- Cabinet de médecine générale, 93400 Saint-Ouen, département de médecine générale, faculté de médecine, université Paris Descartes, 75006 Paris, France
| | - A Saunier
- Médecine interne et maladies infectieuses, centre hospitalier, 24750 Périgueux, France
| | - A Sotto
- Maladies infectieuses et tropicales, centre hospitalo-universitaire, 30000 Nîmes, France
| | - A Raffetin
- Maladies infectieuses et tropicales, centre hospitalier intercommunal, 94190 Villeneuve-St-Georges, France
| | - J-J Monsuez
- Cardiologie, hôpital René-Muret, 93270 Sevran, France
| | - C Michel
- Médecine générale, 67000 Strasbourg, France
| | - N Boulanger
- Laboratoire de bactériologie et CNR des Borrelia, faculté de médecine et centre hospitalo-universitaire, 67000 Strasbourg, France
| | - P Cathebras
- Médecine interne, hôpital Nord, centre hospitalo-universitaire, 42000 Saint-Étienne, France
| | - P Tattevin
- Maladies infectieuses et reanimation médicale, hôpital Pontchaillou, centre hospitalo-universitaire, 35000 Rennes, France.
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Velay A, Argemi X, Wendling MJ, Martinot M, Hansmann Y, Fafi-Kremer S. L’encéphalite à tique en France : qu’en savons-nous aujourd’hui ? ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1773-035x(19)30287-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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32
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Ignatieva EV, Yurchenko AA, Voevoda MI, Yudin NS. Exome-wide search and functional annotation of genes associated in patients with severe tick-borne encephalitis in a Russian population. BMC Med Genomics 2019; 12:61. [PMID: 31122248 PMCID: PMC6533173 DOI: 10.1186/s12920-019-0503-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Tick-borne encephalitis (TBE) is a viral infectious disease caused by tick-borne encephalitis virus (TBEV). TBEV infection is responsible for a variety of clinical manifestations ranging from mild fever to severe neurological illness. Genetic factors involved in the host response to TBEV that may potentially play a role in the severity of the disease are still poorly understood. In this study, using whole-exome sequencing, we aimed to identify genetic variants and genes associated with severe forms of TBE as well as biological pathways through which the identified variants may influence the severity of the disease. Results Whole-exome sequencing data analysis was performed on 22 Russian patients with severe forms of TBE and 17 Russian individuals from the control group. We identified 2407 candidate genes harboring rare, potentially pathogenic variants in exomes of patients with TBE and not containing any rare, potentially pathogenic variants in exomes of individuals from the control group. According to DAVID tool, this set of 2407 genes was enriched with genes involved in extracellular matrix proteoglycans pathway and genes encoding proteins located at the cell periphery. A total of 154 genes/proteins from these functional groups have been shown to be involved in protein-protein interactions (PPIs) with the known candidate genes/proteins extracted from TBEVHostDB database. By ranking these genes according to the number of rare harmful minor alleles, we identified two genes (MSR1 and LMO7), harboring five minor alleles, and three genes (FLNA, PALLD, PKD1) harboring four minor alleles. When considering genes harboring genetic variants associated with severe forms of TBE at the suggestive P-value < 0.01, 46 genes containing harmful variants were identified. Out of these 46 genes, eight (MAP4, WDFY4, ACTRT2, KLHL25, MAP2K3, MBD1, OR10J1, and OR2T34) were additionally found among genes containing rare pathogenic variants identified in patients with TBE; and five genes (WDFY4,ALK, MAP4, BNIPL, EPPK1) were found to encode proteins that are involved in PPIs with proteins encoded by genes from TBEVHostDB. Three genes out of five (MAP4, EPPK1, ALK) were found to encode proteins located at cell periphery. Conclusions Whole-exome sequencing followed by systems biology approach enabled to identify eight candidate genes (MAP4, WDFY4, ACTRT2, KLHL25, MAP2K3, MBD1, OR10J1, and OR2T34) that can potentially determine predisposition to severe forms of TBE. Analyses of the genetic risk factors for severe forms of TBE revealed a significant enrichment with genes controlling extracellular matrix proteoglycans pathway as well as genes encoding components of cell periphery. Electronic supplementary material The online version of this article (10.1186/s12920-019-0503-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elena V Ignatieva
- Laboratory of Evolutionary Bioinformatics and Theoretical Genetics, The Federal Research Center Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia. .,Novosibirsk State University, Novosibirsk, 630090, Russia.
| | - Andrey A Yurchenko
- Laboratory of Infectious Disease Genomics, The Federal Research Center Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Mikhail I Voevoda
- Novosibirsk State University, Novosibirsk, 630090, Russia.,Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630004, Russia
| | - Nikolay S Yudin
- Laboratory of Infectious Disease Genomics, The Federal Research Center Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
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Riccardi N, Antonello RM, Luzzati R, Zajkowska J, Di Bella S, Giacobbe DR. Tick-borne encephalitis in Europe: a brief update on epidemiology, diagnosis, prevention, and treatment. Eur J Intern Med 2019; 62:1-6. [PMID: 30678880 DOI: 10.1016/j.ejim.2019.01.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/30/2018] [Accepted: 01/14/2019] [Indexed: 12/30/2022]
Abstract
Tick-borne encephalitis (TBE) is an emerging health threat that is spreading in many parts of Europe. The mix of socio-economical, ecological and climatic factors as well as the presence of more susceptible hosts is actively contributing to the increasing number of TBE reported cases. TBE is an important cause of central nervous system (CNS) infection that can result in long-term neurological sequelae and even death. Diagnosis of TBE relays mainly on high clinical suspicion confirmed by serological and molecular assays both on serum and cerebrospinal fluid (CSF) with an ancillary role for neuroimaging in supporting the diagnosis. No specific antiviral treatment is currently available for TBE; indeed, supportive treatment as well as intensive care and assisted ventilation in severe forms may be needed. Because of limited option for TBE treatment, of crucial importance is effective vaccination to prevent disease-related morbidity and mortality. Due to expanding proportion of subject possibly exposed to TBE (and new populations such as: unaware travellers to TBE-endemic areas and immunocompromised patients), we performed a comprehensive review of TBE epidemiology, clinical presentation, current available diagnostic tools and treatment.
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Affiliation(s)
- Niccolò Riccardi
- Infectious Diseases Unit, Ospedale Policlinico San Martino - IRCCS per l'Oncologia, Genoa, Italy; Department Health Science (DISSAL), University of Genoa, Genoa, Italy.
| | | | - Roberto Luzzati
- Infectious Diseases Department, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy
| | - Joanna Zajkowska
- Department of Infectious Diseases and Neuroinfections, Medical University in Białystok, Poland
| | - Stefano Di Bella
- Infectious Diseases Department, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy
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Abstract
Ticks are a major group of arthropod vectors, characterized by the diversity of pathogens they transmit, by their impact on human and animal health, and by their socioeconomic implication especially in countries of the Southern Hemisphere. In Europe, Ixodes is the most important tick due to its wide distribution in the ecosystems and the variety of transmitted pathogens, in particular Borrelia (responsible for Lyme borreliosis), but also the tick-borne encephalitis virus. Their increased presence in the environment since the beginning of the 20th century is undeniable, because of major modifications in the biodiversity caused by humans. Increasing the awareness of health professionals and the general population is required to achieve better control of these infections. Thus, "a better understanding of these tick-borne diseases for a better control" is a simple but effective approach, considering their ubiquity in the environment and their particular mode of pathogen transmission (long-lasting blood meal for hard ticks and delayed transmission for bacteria and parasites). Finally, these ectoparasites are problematic due to the potential allergic reactions and other damages caused by their saliva, in humans and animals.
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Abstract
Since 2012, tick-borne encephalitis (TBE) is a notifiable in the European Union. The European Centre for Disease Prevention and Control annually collects data from 28 countries plus Iceland and Norway, based on the EU case definition. Between 2012 and 2016, 23 countries reported 12,500 TBE cases (Ireland and Spain reported none), of which 11,623 (93.0%) were confirmed cases and 878 (7.0%) probable cases. Two countries (Czech Republic and Lithuania) accounted for 38.6% of all reported cases, although their combined population represented only 2.7% of the population under surveillance. The annual notification rate fluctuated between 0.41 cases per 100,000 population in 2015 and 0.65 in 2013 with no significant trend over the period. Lithuania, Latvia and Estonia had the highest notification rates with 15.6, 9.5 and 8.7 cases per 100,000 population, respectively. At the subnational level, six regions had mean annual notification rates above 15 cases per 100,000 population, of which five were in the Baltic countries. Approximately 95% of cases were hospitalised and the overall case fatality ratio was 0.5%. Of the 11,663 cases reported with information on importation status, 156 (1.3%) were reported as imported. Less than 2% of cases had received two or more doses of TBE vaccine.
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Affiliation(s)
- Julien Beauté
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Gianfranco Spiteri
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Eva Warns-Petit
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden (affiliation when the work was performed),Direction Départementale de la Cohésion Sociale et de la Protection des Populations d’Ille-et-Vilaine, Rennes, France (current affiliation)
| | - Hervé Zeller
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden (affiliation when the work was performed)
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36
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Bestehorn M, Weigold S, Kern WV, Chitimia-Dobler L, Mackenstedt U, Dobler G, Borde JP. Phylogenetics of tick-borne encephalitis virus in endemic foci in the upper Rhine region in France and Germany. PLoS One 2018; 13:e0204790. [PMID: 30335778 PMCID: PMC6193627 DOI: 10.1371/journal.pone.0204790] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 09/15/2018] [Indexed: 12/30/2022] Open
Abstract
Objective Tick-borne encephalitis (TBE) caused by the tick-borne encephalitis virus (TBEV) is the most important tick-borne arboviral disease in Europe and Asia. The Upper Rhine Valley is thought to be the very western border of TBEV distribution in Europe. The aim of our study was to identify natural foci and isolate TBEV from ticks, to determine the prevalence of TBEV in local tick populations and to study the phylogenetic relatedness of circulating TBEV strains in this region. Material and methods Ticks were collected between 2016, 2017 and 2018 by flagging. TBEV was isolated from collected ticks and phylogenetic analyses were performed. Minimal infection rates (MIR) of the collected ticks were calculated. Results At 12 sampling sites, a total of 4,064 Ixodes ticks were collected in 2016 and 2017 –(and one single collection 2018). 953 male, 856 female adult ticks and 2,255 nymphs were identified. The MIR rates were 0,17% (1/595) for Schiltach (Germany) and 0,11% (1/944) for Foret de la Robertsau (France), respectively. Overall, the three newly described TBEV strains, isolated in the years 2016 and 2017 from the Upper Rhine Valley have no close phylogenetic relation and show a genetic relationship with strains from eastern Europe. The 2018 TBEV strain from Aubachstrasse (Germany), however, is closely related to the TBEV found in Schiltach (Germany). Conclusion In conclusion, we demonstrate, to our knowledge for the first time, the phylogenetic relations of the newly isolated TBEV strains on both sides of the upper Rhine river.
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Affiliation(s)
- Malena Bestehorn
- Parasitology Unit, University of Hohenheim, D-Stuttgart, Germany
| | - Sebastian Weigold
- Division of Infectious Diseases, Department of Medicine II, University of Freiburg Medical Center and Faculty of Medicine, Freiburg i.Br., Germany
| | - Winfried V Kern
- Division of Infectious Diseases, Department of Medicine II, University of Freiburg Medical Center and Faculty of Medicine, Freiburg i.Br., Germany
| | - Lidia Chitimia-Dobler
- Parasitology Unit, University of Hohenheim, D-Stuttgart, Germany.,Bundeswehr Institute of Microbiology, German Center of Infection Research (DZIF) partner site Munich, Neuherbergstraße 11, München, Germany
| | - Ute Mackenstedt
- Parasitology Unit, University of Hohenheim, D-Stuttgart, Germany
| | - Gerhard Dobler
- Parasitology Unit, University of Hohenheim, D-Stuttgart, Germany.,Bundeswehr Institute of Microbiology, German Center of Infection Research (DZIF) partner site Munich, Neuherbergstraße 11, München, Germany
| | - Johannes P Borde
- Division of Infectious Diseases, Department of Medicine II, University of Freiburg Medical Center and Faculty of Medicine, Freiburg i.Br., Germany.,Praxis Dr. J. Borde / Gesundheitszentrum Oberkirch, Am Marktplatz 8, Oberkirch, Germany
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Kunze U. Report of the 20th annual meeting of the International Scientific Working Group on Tick-Borne Encephalitis (ISW-TBE): ISW-TBE: 20 years of commitment and still challenges ahead. Ticks Tick Borne Dis 2018; 10:13-17. [PMID: 30172555 DOI: 10.1016/j.ttbdis.2018.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 08/04/2018] [Indexed: 11/26/2022]
Abstract
The 20th Meeting of the International Scientific Working Group on Tick-Borne Encephalitis (ISW-TBE) - a group of neurologists, general practitioners, clinicians, travel physicians, virologists, pediatricians, ecologists, and epidemiologists - was held under the theme "ISW-TBE: 20 years of commitment & still challenges ahead". On the occasion of the 20th anniversary of the ISW-TBE several key topics in TBE were extensively discussed, among them current epidemiological developments and investigations, expansion of risk areas, clinical aspects and cases, traveling and mobility, and latest news on TBE vaccination. The main goals that have been achieved by the ISW-TBE so far are, among others, an increased awareness in endemic and non-endemic countries, an increase of vaccination rates in various countries, getting TBE acknowledged and established as a travel-related risk, and building contact with the European Centre for Disease Prevention and Control.
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Affiliation(s)
- Ursula Kunze
- Institute for Social Medicine, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15, A-1090, Vienna, Austria.
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- Institute for Social Medicine, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15, A-1090, Vienna, Austria
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Lindqvist R, Upadhyay A, Överby AK. Tick-Borne Flaviviruses and the Type I Interferon Response. Viruses 2018; 10:E340. [PMID: 29933625 PMCID: PMC6071234 DOI: 10.3390/v10070340] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/15/2018] [Accepted: 06/19/2018] [Indexed: 12/13/2022] Open
Abstract
Flaviviruses are globally distributed pathogens causing millions of human infections every year. Flaviviruses are arthropod-borne viruses and are mainly transmitted by either ticks or mosquitoes. Mosquito-borne flaviviruses and their interactions with the innate immune response have been well-studied and reviewed extensively, thus this review will discuss tick-borne flaviviruses and their interactions with the host innate immune response.
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Affiliation(s)
- Richard Lindqvist
- Department of Clinical Microbiology, Virology, Umeå University, SE-90185 Umeå, Sweden.
- Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, SE-90187 Umeå, Sweden.
- Umeå Centre for Microbial Research (UCMR), Umeå University, SE-90187 Umeå, Sweden.
| | - Arunkumar Upadhyay
- Department of Clinical Microbiology, Virology, Umeå University, SE-90185 Umeå, Sweden.
- Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, SE-90187 Umeå, Sweden.
- Umeå Centre for Microbial Research (UCMR), Umeå University, SE-90187 Umeå, Sweden.
| | - Anna K Överby
- Department of Clinical Microbiology, Virology, Umeå University, SE-90185 Umeå, Sweden.
- Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, SE-90187 Umeå, Sweden.
- Umeå Centre for Microbial Research (UCMR), Umeå University, SE-90187 Umeå, Sweden.
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