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Bakker JW, Esser HJ, Sprong H, Godeke GJ, Hoornweg TE, de Boer WF, Pijlman GP, Koenraadt CJM. Differential susceptibility of geographically distinct Ixodes ricinus populations to tick-borne encephalitis virus and louping ill virus. Emerg Microbes Infect 2024; 13:2321992. [PMID: 38484290 PMCID: PMC10946273 DOI: 10.1080/22221751.2024.2321992] [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] [Indexed: 03/19/2024]
Abstract
Tick-borne encephalitis virus (TBEV) is an emerging pathogen in the Netherlands. Multiple divergent viral strains are circulating and the focal distribution of TBEV remains poorly understood. This may, however, be explained by differences in the susceptibility of tick populations for specific viruses and viral strains, and by viral strains having higher infection success in their local tick population. We investigated this hypothesis by exposing Dutch Ixodes ricinus ticks to two different TBEV strains: TBEV-NL from the Netherlands and TBEV-Neudoerfl from Austria. In addition, we exposed ticks to louping Ill virus (LIV), which is endemic to large parts of the United Kingdom and Ireland, but has not been reported in the Netherlands. Ticks were collected from two locations in the Netherlands: one location without evidence of TBEV circulation and one location endemic for the TBEV-NL strain. Ticks were infected in a biosafety level 3 laboratory using an artificial membrane feeding system. Ticks collected from the region without evidence of TBEV circulation had lower infection rates for TBEV-NL as compared to TBEV-Neudoerfl. Vice versa, ticks collected from the TBEV-NL endemic region had higher infection rates for TBEV-NL compared to TBEV-Neudoerfl. In addition, LIV infection rates were much lower in Dutch ticks compared to TBEV, which may explain why LIV is not present in the Netherlands. Our findings show that ticks from two distinct geographical populations differ in their susceptibility to TBEV strains, which could be the result of differences in the genetic background of the tick populations.
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Affiliation(s)
- Julian W. Bakker
- Laboratory of Entomology, Wageningen University & Research, Wageningen, Netherlands
| | - Helen J. Esser
- Wildlife Ecology and Conservation Group, Wageningen University & Research, Wageningen, Netherlands
| | - Hein Sprong
- Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Gert-Jan Godeke
- Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Tabitha E. Hoornweg
- Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Willem F. de Boer
- Wildlife Ecology and Conservation Group, Wageningen University & Research, Wageningen, Netherlands
| | - Gorben P. Pijlman
- Laboratory of Virology, Wageningen University & Research, Wageningen, Netherlands
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Kjær LJ, Johansson M, Lindgren PE, Asghar N, Wilhelmsson P, Fredlund H, Christensson M, Wallenhammar A, Bødker R, Rasmussen G, Kjellander P. Potential drivers of human tick-borne encephalitis in the Örebro region of Sweden, 2010-2021. Sci Rep 2023; 13:7685. [PMID: 37169798 PMCID: PMC10175290 DOI: 10.1038/s41598-023-34675-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/05/2023] [Indexed: 05/13/2023] Open
Abstract
Incidence of tick-borne encephalitis (TBE) has increased during the last years in Scandinavia, but the underlying mechanism is not understood. TBE human case data reported between 2010 and 2021 were aggregated into postal codes within Örebro County, south-central Sweden, along with tick abundance and environmental data to analyse spatial patterns and identify drivers of TBE. We identified a substantial and continuing increase of TBE incidence in Örebro County during the study period. Spatial cluster analyses showed significant hotspots (higher number of cases than expected) in the southern and northern parts of Örebro County, whereas a cold spot (lower number of cases than expected) was found in the central part comprising Örebro municipality. Generalised linear models showed that the risk of acquiring TBE increased by 12.5% and 72.3% for every percent increase in relative humidity and proportion of wetland forest, respectively, whereas the risk decreased by 52.8% for every degree Celsius increase in annual temperature range. However, models had relatively low goodness of fit (R2 < 0.27). Results suggest that TBE in Örebro County is spatially clustered, however variables used in this study, i.e., climatic variables, forest cover, water, tick abundance, sheep as indicator species, alone do not explain this pattern.
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Affiliation(s)
- Lene Jung Kjær
- Section for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - Magnus Johansson
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Per-Eric Lindgren
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Region Jönköping County, Jönköping, Sweden
| | - Naveed Asghar
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Peter Wilhelmsson
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Region Jönköping County, Jönköping, Sweden
| | - Hans Fredlund
- Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Örebro County Council, Örebro, Sweden
| | - Madeleine Christensson
- Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences (SLU), Riddarhyttan, Sweden
| | - Amélie Wallenhammar
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - René Bødker
- Section for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Gunløg Rasmussen
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Örebro County Council, Örebro, Sweden
| | - Petter Kjellander
- Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences (SLU), Riddarhyttan, Sweden
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3
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Carpio KL, Thompson JK, Widen SG, Smith JK, Juelich TL, Clements DE, Freiberg AN, Barrett ADT. Differences in Genetic Diversity of Mammalian Tick-Borne Flaviviruses. Viruses 2023; 15:281. [PMID: 36851495 PMCID: PMC9959157 DOI: 10.3390/v15020281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 01/20/2023] Open
Abstract
The genetic diversities of mammalian tick-borne flaviviruses are poorly understood. We used next-generation sequencing (NGS) to deep sequence different viruses and strains belonging to this group of flaviviruses, including Central European tick-borne encephalitis virus (TBEV-Eur), Far Eastern TBEV (TBEV-FE), Langat (LGTV), Powassan (POWV), Deer Tick (DTV), Kyasanur Forest Disease (KFDV), Alkhurma hemorrhagic fever (AHFV), and Omsk hemorrhagic fever (OHFV) viruses. DTV, AHFV, and KFDV had the lowest genetic diversity, while POWV strains LEIV-5530 and LB, OHFV, TBEV-Eur, and TBEV-FE had higher genetic diversities. These findings are compatible with the phylogenetic relationships between the viruses. For DTV and POWV, the amount of genetic diversity could be explained by the number of tick vector species and amplification hosts each virus can occupy, with low diversity DTV having a more limited vector and host pool, while POWV with higher genetic diversities has been isolated from different tick species and mammals. It is speculated that high genetic diversity may contribute to the survival of the virus as it encounters these different environments.
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Affiliation(s)
- Kassandra L. Carpio
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jill K. Thompson
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Steven G. Widen
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jennifer K. Smith
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Terry L. Juelich
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | | | - Alexander N. Freiberg
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Alan D. T. Barrett
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA
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4
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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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Helmová R, Hönig V, Tykalová H, Palus M, Bell-Sakyi L, Grubhoffer L. Tick-Borne Encephalitis Virus Adaptation in Different Host Environments and Existence of Quasispecies. Viruses 2020; 12:v12080902. [PMID: 32824843 PMCID: PMC7472235 DOI: 10.3390/v12080902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/10/2020] [Accepted: 08/13/2020] [Indexed: 12/11/2022] Open
Abstract
A highly virulent strain (Hypr) of tick-borne encephalitis virus (TBEV) was serially subcultured in the mammalian porcine kidney stable (PS) and Ixodes ricinus tick (IRE/CTVM19) cell lines, producing three viral variants. These variants exhibited distinct plaque sizes and virulence in a mouse model. Comparing the full-genome sequences of all variants, several nucleotide changes were identified in different genomic regions. Furthermore, different sequential variants were revealed to co-exist within one sample as quasispecies. Interestingly, the above-mentioned nucleotide changes found within the whole genome sequences of the new variants were present alongside the nucleotide sequence of the parental strain, which was represented as a minority quasispecies. These observations further imply that TBEV exists as a heterogeneous population that contains virus variants pre-adapted to reproduction in different environments, probably enabling virus survival in ticks and mammals.
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Affiliation(s)
- Renata Helmová
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic; (R.H.); (H.T.); (L.G.)
| | - Václav Hönig
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic; (R.H.); (H.T.); (L.G.)
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic;
- Department of Virology, Veterinary Research Institute, 62100 Brno, Czech Republic
- Correspondence: ; Tel.: +420-387-775-463
| | - Hana Tykalová
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic; (R.H.); (H.T.); (L.G.)
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic;
| | - Martin Palus
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic;
- Department of Virology, Veterinary Research Institute, 62100 Brno, Czech Republic
| | - Lesley Bell-Sakyi
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 5RF, UK;
| | - Libor Grubhoffer
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic; (R.H.); (H.T.); (L.G.)
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic;
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Akello JO, Leib SL, Engler O, Beuret C. Evaluation of Viral RNA Recovery Methods in Vectors by Metagenomic Sequencing. Viruses 2020; 12:v12050562. [PMID: 32438629 PMCID: PMC7290855 DOI: 10.3390/v12050562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 11/16/2022] Open
Abstract
Identification and characterization of viral genomes in vectors including ticks and mosquitoes positive for pathogens of great public health concern using metagenomic next generation sequencing (mNGS) has challenges. One such challenge is the ability to efficiently recover viral RNA which is typically dependent on sample processing. We evaluated the quantitative effect of six different extraction methods in recovering viral RNA in vectors using negative tick homogenates spiked with serial dilutions of tick-borne encephalitis virus (TBEV) and surrogate Langat virus (LGTV). Evaluation was performed using qPCR and mNGS. Sensitivity and proof of concept of optimal method was tested using naturally positive TBEV tick homogenates and positive dengue, chikungunya, and Zika virus mosquito homogenates. The amount of observed viral genome copies, percentage of mapped reads, and genome coverage varied among different extractions methods. The developed Method 5 gave a 120.8-, 46-, 2.5-, 22.4-, and 9.9-fold increase in the number of viral reads mapping to the expected pathogen in comparison to Method 1, 2, 3, 4, and 6, respectively. Our developed Method 5 termed ROVIV (Recovery of Viruses in Vectors) greatly improved viral RNA recovery and identification in vectors using mNGS. Therefore, it may be a more sensitive method for use in arbovirus surveillance.
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Affiliation(s)
- Joyce Odeke Akello
- Biology Division, Spiez Laboratory, Swiss Federal Office for Civil Protection, Austrasse, CH-3700 Spiez, Switzerland;
- Institute for Infectious Diseases, University of Bern, Friedbühlstrasse 51, 3001 Bern, Switzerland;
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
- Correspondence: (J.O.A.); (C.B.); Tel.: +41-316328646 (J.O.A.); +41-584681664 (C.B.)
| | - Stephen L. Leib
- Institute for Infectious Diseases, University of Bern, Friedbühlstrasse 51, 3001 Bern, Switzerland;
| | - Olivier Engler
- Biology Division, Spiez Laboratory, Swiss Federal Office for Civil Protection, Austrasse, CH-3700 Spiez, Switzerland;
| | - Christian Beuret
- Biology Division, Spiez Laboratory, Swiss Federal Office for Civil Protection, Austrasse, CH-3700 Spiez, Switzerland;
- Correspondence: (J.O.A.); (C.B.); Tel.: +41-316328646 (J.O.A.); +41-584681664 (C.B.)
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7
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Vikse R, Paulsen KM, Edgar KS, H-O Pettersson J, Ottesen PS, Okbaldet YB, Kiran N, Lamsal A, Lindstedt HEH, Pedersen BN, Soleng A, Andreassen ÅK. Geographical distribution and prevalence of tick-borne encephalitis virus in questing Ixodes ricinus ticks and phylogeographic structure of the Ixodes ricinus vector in Norway. Zoonoses Public Health 2020; 67:370-381. [PMID: 32112526 DOI: 10.1111/zph.12696] [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: 07/03/2019] [Revised: 01/24/2020] [Accepted: 02/10/2020] [Indexed: 12/30/2022]
Abstract
The tick-borne encephalitis virus (TBEV), a zoonotic flaviviral infection, is endemic in large parts of Norway and Eurasia. Humans are mainly infected with TBEV via bites from infected ticks. In Norway, the main geographical distribution of ticks is along the Norwegian coastline from southeast (~59°N) and up to the southern parts of Nordland County (~65°N). In this study, we collected ticks by flagging along the coast from Østfold County to Nordland County. By whole-genome sequencing of the mitochondrial genome of Ixodes ricinus, the phylogenetic tree suggests that there is limited phylogeographic structure both in Norway and in Europe. The overall TBEV prevalence is 0.3% for nymphs and 4.3% for adults. The highest estimated TBEV prevalence in adult ticks was detected in Rogaland and Vestfold County, while for nymphs it is highest in Vestfold, Vest-Agder and Rogaland. The present work is one of the largest studies on distribution and prevalence of TBEV in ticks in Scandinavia, showing that the virus is wider distributed in Norway than previously anticipated.
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Affiliation(s)
- Rose Vikse
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway
| | - Katrine M Paulsen
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway.,Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Kristin Skarsfjord Edgar
- Division for Infection Control and Environmental Health, Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - John H-O Pettersson
- Division for Infection Control and Environmental Health, Department of Infectious Diseases Epidemiology and Modelling, Norwegian Institute of Public Health, Oslo, Norway.,Department of Medical Biochemistry and Microbiology/Zoonosis Science Center, Uppsala University, Uppsala, Sweden.,Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Preben Skrede Ottesen
- Division for Infection Control and Environmental Health, Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - Yohannes Bein Okbaldet
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway
| | - Nosheen Kiran
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway
| | - Alaka Lamsal
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway.,University of South East Norway, Bø i Telemark, Norway
| | - Heidi Elisabeth H Lindstedt
- Division for Infection Control and Environmental Health, Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - Benedikte Nevjen Pedersen
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway.,University of South East Norway, Bø i Telemark, Norway
| | - Arnulf Soleng
- Division for Infection Control and Environmental Health, Department of Pest Control, Norwegian Institute of Public Health, Oslo, Norway
| | - Åshild K Andreassen
- Division for Infection Control and Environmental Health, Department of Virology, Norwegian Institute of Public Health, Oslo, Norway.,University of South East Norway, Bø i Telemark, Norway
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Litov AG, Deviatkin AA, Goptar IA, Dedkov VG, Gmyl AP, Markelov ML, Shipulin GA, Karganova GG. Evaluation of the population heterogeneity of TBEV laboratory variants using high-throughput sequencing. J Gen Virol 2019; 99:240-245. [PMID: 29393021 DOI: 10.1099/jgv.0.001003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
We studied minor variants within two tick-borne encephalitis virus (TBEV) populations with a common ancestor: the mouse brain-adapted variant EK-328c and the tick-adapted variant M. High-throughput sequencing with custom amplicons from RT-PCR viral RNA was performed on Illumina MiSeq 2*250 paired-end v2 chemistry. Using the LowFreq program (default settings) and Sanger-sequenced consensus as a reference, variants with an abundance of 1 % and above within the studied populations were identified. Using the obtained data in the context of our previous studies, we concluded that TBEV variants, which are different from the major population phenotype and can become a major part of the viral population under favourable environmental conditions, can exist at abundances of less than 1 % in the long-term. The comparison of our data with the literature allowed us to conclude that the laboratory variant EK-328c and variant M have similar SNV counts to TBEV variants from natural populations and some fast-evolving RNA viruses.
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Affiliation(s)
- Alexander G Litov
- Chumakov Institute of Poliomyelitis and Viral Encephalitides (Chumakov FSC R&D IBP), prem. 8, k.17, pos. Institut Poliomielita, poselenie Moskovskiy, Moscow 108819, Russia
- Lomonosov MSU, Faculty of Biology, Lenin Hills, 1/12, Moscow 119234, Russia
| | - Andrey A Deviatkin
- Chumakov Institute of Poliomyelitis and Viral Encephalitides (Chumakov FSC R&D IBP), prem. 8, k.17, pos. Institut Poliomielita, poselenie Moskovskiy, Moscow 108819, Russia
- Sechenov First Moscow State Medical University, Moscow, Russia
- Research Institute of Occupational Health, Moscow, Russia
| | - Irina A Goptar
- Research Institute of Occupational Health, Moscow, Russia
- Central Research Institute for Epidemiology (CRIE), Federal Service on Consumer Rights Protection and Human Well-Being Surveillance, Moscow, Russia
| | - Vladimir G Dedkov
- Central Research Institute for Epidemiology (CRIE), Federal Service on Consumer Rights Protection and Human Well-Being Surveillance, Moscow, Russia
| | - Anatoly P Gmyl
- Chumakov Institute of Poliomyelitis and Viral Encephalitides (Chumakov FSC R&D IBP), prem. 8, k.17, pos. Institut Poliomielita, poselenie Moskovskiy, Moscow 108819, Russia
- Sechenov First Moscow State Medical University, Moscow, Russia
| | | | - German A Shipulin
- Central Research Institute for Epidemiology (CRIE), Federal Service on Consumer Rights Protection and Human Well-Being Surveillance, Moscow, Russia
| | - Galina G Karganova
- Lomonosov MSU, Faculty of Biology, Lenin Hills, 1/12, Moscow 119234, Russia
- Sechenov First Moscow State Medical University, Moscow, Russia
- Chumakov Institute of Poliomyelitis and Viral Encephalitides (Chumakov FSC R&D IBP), prem. 8, k.17, pos. Institut Poliomielita, poselenie Moskovskiy, Moscow 108819, Russia
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Gondard M, Michelet L, Nisavanh A, Devillers E, Delannoy S, Fach P, Aspan A, Ullman K, Chirico J, Hoffmann B, van der Wal FJ, de Koeijer A, van Solt-Smits C, Jahfari S, Sprong H, Mansfield KL, Fooks AR, Klitgaard K, Bødker R, Moutailler S. Prevalence of tick-borne viruses in Ixodes ricinus assessed by high-throughput real-time PCR. Pathog Dis 2018; 76:5181333. [PMID: 30423120 DOI: 10.1093/femspd/fty083] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/12/2018] [Indexed: 12/18/2022] Open
Abstract
Ticks are one of the principal arthropod vectors of human and animal infectious diseases. Whereas the prevalence of tick-borne encephalitis virus in ticks in Europe is well studied, there is less information available on the prevalence of the other tick-borne viruses (TBVs) existing worldwide. The aim of this study was to improve the epidemiological survey tools of TBVs by the development of an efficient high-throughput test to screen a wide range of viruses in ticks.In this study, we developed a new high-throughput virus-detection assay based on parallel real-time PCRs on a microfluidic system, and used it to perform a large scale epidemiological survey screening for the presence of 21 TBVs in 18 135 nymphs of Ixodes ricinus collected from five European countries. This extensive investigation has (i) evaluated the prevalence of four viruses present in the collected ticks, (ii) allowed the identification of viruses in regions where they were previously undetected.In conclusion, we have demonstrated the capabilities of this new screening method that allows the detection of numerous TBVs in a large number of ticks. This tool represents a powerful and rapid system for TBVs surveillance in Europe and could be easily customized to assess viral emergence.
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Affiliation(s)
- Mathilde Gondard
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Lorraine Michelet
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Athinna Nisavanh
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Elodie Devillers
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Sabine Delannoy
- IdentyPath Platform, Food Safety Laboratory, ANSES, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Patrick Fach
- IdentyPath Platform, Food Safety Laboratory, ANSES, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
| | - Anna Aspan
- Department of Microbiology, National Veterinary Institute (SVA), SE-751 89 Uppsala, Sweden
| | - Karin Ullman
- Department of Microbiology, National Veterinary Institute (SVA), SE-751 89 Uppsala, Sweden
| | - Jan Chirico
- Department of Microbiology, National Veterinary Institute (SVA), SE-751 89 Uppsala, Sweden
| | - Bernd Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Sü dufer 10, 17493 Greifswald - Insel Riems, Germany
| | - Fimme Jan van der Wal
- Wageningen Bioveterinary Research (WBVR), Wageningen UR, Houtribweg 39, 8221 RA Lelystad, The Netherlands
| | - Aline de Koeijer
- Wageningen Bioveterinary Research (WBVR), Wageningen UR, Houtribweg 39, 8221 RA Lelystad, The Netherlands
| | - Conny van Solt-Smits
- Wageningen Bioveterinary Research (WBVR), Wageningen UR, Houtribweg 39, 8221 RA Lelystad, The Netherlands
| | - Seta Jahfari
- Laboratory for Zoonoses and Environmental Microbiology, National Institute for Public Health and Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, The Netherlands
| | - Hein Sprong
- Laboratory for Zoonoses and Environmental Microbiology, National Institute for Public Health and Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, The Netherlands
| | - Karen L Mansfield
- Animal and Plant Health Agency (APHA), Woodham Lane, New Haw, Addlestone, Surrey, KT15 3NB, United Kingdom
| | - Anthony R Fooks
- Animal and Plant Health Agency (APHA), Woodham Lane, New Haw, Addlestone, Surrey, KT15 3NB, United Kingdom
| | - Kirstine Klitgaard
- National Veterinary Institute, DTU, Henrik Dams Allé, Building 205B, 2800 Kgs. Lyngby, Denmark
| | - Rene Bødker
- National Veterinary Institute, DTU, Henrik Dams Allé, Building 205B, 2800 Kgs. Lyngby, Denmark
| | - Sara Moutailler
- UMR BIPAR, Animal Health Laboratory, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 14 Rue P. et M. Curie, 94700 Maisons-Alfort, France
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