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Lopes AM, Almeida T, Diz S, Côrte-Real JV, Osório HC, Ramilo DW, Rebelo MT, da Fonseca IP, Esteves PJ, Alves PC, Santos N, Abrantes J. The potential role of scavenging flies as mechanical vectors of Lagovirus europaeus/GI.2. Virol J 2023; 20:103. [PMID: 37237382 DOI: 10.1186/s12985-023-02065-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/07/2023] [Indexed: 05/28/2023] Open
Abstract
The European rabbit (Oryctolagus cuniculus) populations of the Iberian Peninsula have been severely affected by the emergence of the rabbit haemorrhagic disease virus (RHDV) Lagovirus europaeus/GI.2 (RHDV2/b). Bushflies and blowflies (Muscidae and Calliphoridae families, respectively) are important RHDV vectors in Oceania, but their epidemiological role is unknown in the native range of the European rabbit. In this study, scavenging flies were collected between June 2018 and February 2019 in baited traps at one site in southern Portugal, alongside a longitudinal capture-mark-recapture study of a wild European rabbit population, aiming to provide evidence of mechanical transmission of GI.2 by flies. Fly abundance, particularly from Calliphoridae and Muscidae families, peaked in October 2018 and in February 2019. By employing molecular tools, we were able to detect the presence of GI.2 in flies belonging to the families Calliphoridae, Muscidae, Fanniidae and Drosophilidae. The positive samples were detected during an RHD outbreak and absent in samples collected when no evidence of viral circulation in the local rabbit population was found. We were able to sequence a short viral genomic fragment, confirming its identity as RHDV GI.2. The results suggest that scavenging flies may act as mechanical vectors of GI.2 in the native range of the southwestern Iberian subspecies O. cuniculus algirus. Future studies should better assess their potential in the epidemiology of RHD and as a tool for monitoring viral circulation in the field.
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Affiliation(s)
- Ana M Lopes
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Unidade Multidisciplinar de Investigação Biomédica (UMIB), Universidade do Porto, Porto, 4050-313, Portugal
| | - Tereza Almeida
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Sílvia Diz
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - João V Côrte-Real
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, Ludwig Maximilian University of Munich (LMU) München, Munich, Germany
| | - Hugo C Osório
- Centro de Estudos de Vectores e Doenças Infecciosas, Instituto Nacional de Saúde Doutor Ricardo Jorge, Marateca, Portugal
- Instituto de Saúde Ambiental, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - David W Ramilo
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-s-Montes and Alto Douro (UTAD), 5000-801, Vila Real, Portugal
- Faculdade de Medicina Veterinária, Universidade Lusófona, Lisbon, Portugal
| | - Maria Teresa Rebelo
- CESAM - Centre for Environmental and Marine Studies, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Isabel Pereira da Fonseca
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-s-Montes and Alto Douro (UTAD), 5000-801, Vila Real, Portugal
| | - Pedro J Esteves
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal
- CITS - Center of Investigation in Health Technologies, CESPU, 4585-116, Gandra, Portugal
| | - Paulo C Alves
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal
| | - Nuno Santos
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal.
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal.
| | - Joana Abrantes
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal.
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal.
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal.
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Hrynkiewicz R, Bębnowska D, Kauppinen A, Gadd T, Piasecki T, Niedźwiedzka-Rystwej P. Occurrence of Lagovirus europaeus (Rabbit Hemorrhagic Disease Virus) in Domestic Rabbits in Southwestern Poland in 2019: Case Report. Microbiol Spectr 2022; 10:e0229822. [PMID: 36445093 PMCID: PMC9769870 DOI: 10.1128/spectrum.02298-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 11/03/2022] [Indexed: 12/02/2022] Open
Abstract
Lagovirus europaeus (rabbit hemorrhagic disease virus [RHDV]) is a small, nonenveloped, single-stranded RNA virus that causes a severe, highly infectious, and fatal disease in rabbits (Oryctolagus cuniculus) called rabbit hemorrhagic disease (RHD). Since its discovery in the 1980s, it has posed a very serious threat to the global rabbit industry and the rabbit population in the wild. According to data from 2005 to 2018, the occurrence of RHD has been reported or suspected in 50 countries, with more than one-half of the reports being recorded in European countries. The main aim of the study was to detect Lagovirus europaeus (RHDV) strains found in domestic rabbits that died suddenly in the city of Wrocław in southwest Poland. All animals (n = 14) tested in this study died naturally and showed macroscopic features at necropsy that indicated the possibility of death from RHD. As a result of the research, the presence of L. europaeus virus was confirmed in 8 samples of all 14 samples collected. All strains of Lagovirus europaeus isolated in the present study showed 100% nucleotide identity to L. europaeus GI.1 strain FRG and a strain isolated in New Zealand, as well as the L. europaeus GI.1a Erfurt strain. This suggests that it is likely that L. europaeus GI.2 strains have so far not displaced L. europaeus GI.1 strains from the environment in Poland. IMPORTANCE Lagovirus europaeus (RHDV) causes a severe, highly infectious, and fatal disease in rabbits called RHD. The disease is a very serious threat to the global rabbit industry and the rabbit population in the wild. The aim of the study was to detect Lagovirus europaeus (RHDV) strains in domestic rabbits that died suddenly in Poland. The presence of RHDV was confirmed in 8 samples of all 14 samples collected. This is one of the very few reports on the existence of this virus in pet rabbits in Poland.
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Affiliation(s)
| | | | - Ari Kauppinen
- Finnish Food Authority, Laboratory and Research Division, Animal Health Diagnostic Unit, Helsinki, Finland
| | - Tuija Gadd
- Finnish Food Authority, Laboratory and Research Division, Animal Health Diagnostic Unit, Helsinki, Finland
| | - Tomasz Piasecki
- Department of Epizootiology and Clinic of Birds and Exotic Animals, The Faculty of Veterinary, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
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Reactivity of selected markers of innate and adaptive immunity in rabbits experimentally infected with antigenic variants of RHD (Lagovirus europaeus/GI.1a). Vet Res Commun 2021; 46:233-242. [PMID: 34713305 PMCID: PMC8791865 DOI: 10.1007/s11259-021-09851-x] [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: 05/18/2021] [Accepted: 10/15/2021] [Indexed: 11/05/2022]
Abstract
Lagovirus europaeus/GI.1 causes a fatal viral condition in rabbits characterized by acute viral hepatitis and disseminated intravascular coagulation. Due to rapid viral and environmental changes variants (Lagovirus europaeus/GI.1a and GI.2) have appeared and few immunological studies were performed. The aim of the study was to determine innate and adaptive immunity parameters in rabbits infected with six Lagovirus europeus/GI.1a viruses. To achieve the goal several methods were used, i.e. cytometry, microscopy, biochemical and cytochemical tests, spectrophotometry. The results show that three immunotypes exists among the studied strains and they differ in innate (mainly) and adaptive immunity, partly depending on hemagglutination. The peak of changes is 24 h post infection in phagocytosis markers of polymorphonuclear cells and CD8+ T cells. Lagovirus europaeus/GI.1a strains differ from Lagovirus europaeus/GI.1 in terms of immunological response based on our previous work concerning the same parameters in immunological response against this disease.
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Müller C, Hrynkiewicz R, Bębnowska D, Maldonado J, Baratelli M, Köllner B, Niedźwiedzka-Rystwej P. Immunity against Lagovirus europaeus and the Impact of the Immunological Studies on Vaccination. Vaccines (Basel) 2021; 9:vaccines9030255. [PMID: 33805607 PMCID: PMC8002203 DOI: 10.3390/vaccines9030255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 12/14/2022] Open
Abstract
In the early 1980s, a highly contagious viral hemorrhagic fever in rabbits (Oryctolagus cuniculus) emerged, causing a very high rate of mortality in these animals. Since the initial occurrence of the rabbit hemorrhagic disease virus (RHDV), several hundred million rabbits have died after infection. The emergence of genetically-different virus variants (RHDV GI.1 and GI.2) indicated the very high variability of RHDV. Moreover, with these variants, the host range broadened to hare species (Lepus). The circulation of RHDV genotypes displays different virulences and a limited induction of cross-protective immunity. Interestingly, juvenile rabbits (<9 weeks of age) with an immature immune system display a general resistance to RHDV GI.1, and a limited resistance to RHDV GI.2 strains, whereas less than 3% of adult rabbits survive an infection by either RHDV GI.1. or GI.2. Several not-yet fully understood phenomena characterize the RHD. A very low infection dose followed by an extremely rapid viral replication could be simplified to the induction of a disseminated intravascular coagulopathy (DIC), a severe loss of lymphocytes—especially T-cells—and death within 36 to 72 h post infection. On the other hand, in animals surviving the infection or after vaccination, very high titers of RHDV-neutralizing antibodies were induced. Several studies have been conducted in order to deepen the knowledge about the virus’ genetics, epidemiology, RHDV-induced pathology, and the anti-RHDV immune responses of rabbits in order to understand the phenomenon of the juvenile resistance to this virus. Moreover, several approaches have been used to produce efficient vaccines in order to prevent an infection with RHDV. In this review, we discuss the current knowledge about anti-RHDV resistance and immunity, RHDV vaccination, and the further need to establish rationally-based RHDV vaccines.
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Affiliation(s)
- Claudia Müller
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institute, 17493 Greifswald-Insel Riems, Germany;
| | - Rafał Hrynkiewicz
- Institute of Biology, University of Szczecin, Felczaka 3c, 71-412 Szczecin, Poland; (R.H.); (D.B.)
| | - Dominika Bębnowska
- Institute of Biology, University of Szczecin, Felczaka 3c, 71-412 Szczecin, Poland; (R.H.); (D.B.)
| | | | | | - Bernd Köllner
- Institute of Immunology, Friedrich-Loeffler-Institute, 17493 Greifswald-Insel Riems, Germany
- Correspondence: (B.K.); (P.N.-R.)
| | - Paulina Niedźwiedzka-Rystwej
- Institute of Biology, University of Szczecin, Felczaka 3c, 71-412 Szczecin, Poland; (R.H.); (D.B.)
- Correspondence: (B.K.); (P.N.-R.)
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Myeloperoxidase and Lysozymes as a Pivotal Hallmark of Immunity Status in Rabbits. Animals (Basel) 2020; 10:ani10091581. [PMID: 32899838 PMCID: PMC7552177 DOI: 10.3390/ani10091581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Rabbit breeding is a very important element in the context of broadly understood industrial breeding, as rabbits are one of the main and most frequently chosen economic directions. Effective rabbit breeding, however, requires full control over the health of these animals, which is particularly related to the orientation regarding their immune status. There are many indicators that can be used to assess the immune system, but the greatest attention should be paid to those that change rapidly over time and reflect the body’s first line of defense. Peripheral blood granulocytes contain enzymes with strong antimicrobial properties, the level of which changes as a result of various external factors, e.g., viral infection, which was assessed in this study. The aim of the study was to evaluate the dynamics of myeloperoxidase (MPO) and lysozyme (LZM) in the experimental infection of rabbits with the Lagovirus europaeus/GI.1a virus, which is a pathogen causing high mortality, decimating rabbit farms all over the world in a short time. The results obtained in the dynamic system show that the levels of assessed enzymes significantly change in the blood during infection. Assessing the immune system using these indicators could therefore be a potential biomarker for the immune status of rabbits. Abstract Infectious diseases, due to their massive scale, are the greatest pain for all rabbit breeders. Viral infections cause enormous economic losses in farms. Treating sick rabbits is very difficult and expensive, so it is very important to prevent disease by vaccinating. In order to successfully fight viral infections, it is important to know about the immune response of an infected animal. The aim of this study was to analyze the immune response mediated by antimicrobial peptides (myeloperoxidase (MPO) and lysozyme (LZM)) in peripheral blood neutrophils and rabbit serum by non-invasive immunological methods. The study was carried out on mixed breed rabbits that were experimentally infected with two strains (Erfurt and Rossi) of the Lagovirus europaeus/GI.1a virus. It has been observed that virus infection causes changes in the form of statistically significant increases in the activity of MPO and LZM concentration, while in the case of LZM activity only statistically significant decreases were noted. Additionally, clinical symptoms typical for the course of the disease were noted, and the probability of survival of the animals at 60 h p.i. (post infection) was 30% for the Erfurt strain, and −60% for the Rossi strain. The obtained results of MPO and LZMs suggest that these enzymes, especially MPO, may serve as a prognostic marker of the state of the immune system of rabbits.
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Abrantes J, Lopes AM, Lemaitre E, Ahola H, Banihashem F, Droillard C, Marchandeau S, Esteves PJ, Neimanis A, Le Gall-Reculé G. Retrospective Analysis Shows That Most RHDV GI.1 Strains Circulating Since the Late 1990s in France and Sweden Were Recombinant GI.3P-GI.1d Strains. Genes (Basel) 2020; 11:E910. [PMID: 32784857 PMCID: PMC7464634 DOI: 10.3390/genes11080910] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/27/2020] [Accepted: 08/06/2020] [Indexed: 12/27/2022] Open
Abstract
Recombination is one of the major sources of genetic variation in viruses. RNA viruses, such as rabbit hemorrhagic disease virus (RHDV), are among the viruses with the highest recombination rates. Several recombination events have been described for RHDV, mostly as a consequence of their genomic architecture. Here, we undertook phylogenetic and recombination analyses of French and Swedish RHDV strains from 1994 to 2016 and uncovered a new intergenotypic recombination event. This event occurred in the late 1990s/early 2000s and involved nonpathogenic GI.3 strains as donors for the nonstructural part of the genome of these recombinants, while pathogenic GI.1d strains contributed to the structural part. These GI.3P-GI.1d recombinant strains did not entirely replace GI.1d (nonrecombinant) strains, but became the dominant strains in France and Sweden, likely due to a fitness advantage associated with this genomic architecture. GI.3P-GI.1d (P stands for polymerase) strains persisted until 2013 and 2016 in Sweden and France, respectively, and cocirculated with the new genotype GI.2 in France. Since strains from the first GI.2 outbreaks were GI.3P-GI.2, we hypothesize that GI.3P-GI.1d could be the parental strain. Our results confirm the outstanding recombination ability of RHDV and its importance in the evolution of lagoviruses, which was only revealed by studying complete genomic sequences.
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Affiliation(s)
- Joana Abrantes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal; (J.A.); (A.M.L.); (P.J.E.)
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal
| | - Ana M. Lopes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal; (J.A.); (A.M.L.); (P.J.E.)
- Instituto de Ciências Biomédicas Abel Salazar/Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, 4050-313 Porto, Portugal
| | - Evelyne Lemaitre
- Unité de Virologie, Immunologie, Parasitologie, Aviaires et Cunicoles, Laboratoire de Ploufragan-Plouzané-Niort, Agence nationale de sécurité sanitaire, de l’alimentation, de l’environnement et du travail (Anses), 22440 Ploufragan, France; (E.L.); (C.D.)
| | - Harri Ahola
- Department of Microbiology, National Veterinary Institute (SVA), Ulls väg 2B, SE75189 Uppsala, Sweden; (H.A.); (F.B.)
| | - Fereshteh Banihashem
- Department of Microbiology, National Veterinary Institute (SVA), Ulls väg 2B, SE75189 Uppsala, Sweden; (H.A.); (F.B.)
| | - Clément Droillard
- Unité de Virologie, Immunologie, Parasitologie, Aviaires et Cunicoles, Laboratoire de Ploufragan-Plouzané-Niort, Agence nationale de sécurité sanitaire, de l’alimentation, de l’environnement et du travail (Anses), 22440 Ploufragan, France; (E.L.); (C.D.)
| | - Stéphane Marchandeau
- Unité Petite Faune Sédentaire et Espèces Outre-Mer, Direction de la Recherche et de l’Appui Scientifique, Office Français de la Biodiversité (OFB), 44300 Nantes, France;
| | - Pedro J. Esteves
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal; (J.A.); (A.M.L.); (P.J.E.)
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal
| | - Aleksija Neimanis
- Department of Pathology and Wildlife Diseases, National Veterinary Institute (SVA), Ulls väg 2B, SE75189 Uppsala, Sweden
| | - Ghislaine Le Gall-Reculé
- Unité de Virologie, Immunologie, Parasitologie, Aviaires et Cunicoles, Laboratoire de Ploufragan-Plouzané-Niort, Agence nationale de sécurité sanitaire, de l’alimentation, de l’environnement et du travail (Anses), 22440 Ploufragan, France; (E.L.); (C.D.)
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7
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Rosell JM, de la Fuente LF, Parra F, Dalton KP, Badiola Sáiz JI, Pérez de Rozas A, Badiola Díez JJ, Fernández de Luco D, Casal J, Majó N, Casas J, Garriga R, Fernández Magariños XM. Myxomatosis and Rabbit Haemorrhagic Disease: A 30-Year Study of the Occurrence on Commercial Farms in Spain. Animals (Basel) 2019; 9:E780. [PMID: 31658748 PMCID: PMC6827050 DOI: 10.3390/ani9100780] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 01/25/2023] Open
Abstract
In this retrospective study, we describe the relative occurrence of clinical myxomatosis, and rabbit haemorrhagic disease (RHD), on 1714 commercial farms visited in Spain, between 1988 and 2018. We determined the annual prevalence based on 817 visits to 394 farms affected by myxomatosis. Myxomatosis was more prevalent from August to March, being lowest in June (3%) and highest in September (8.9%). With regard to RHD, we assessed 253 visits to 156 affected farms. We analyzed mean annual and monthly incidence. Two important RHD epidemics occurred; the first in 1988-1989 due to RHDV GI.1 (also known as RHDV), and the second from 2011 to 2013 due to RHDV GI.2 (RHDV2 or RHDVb). These epidemics occurred at times when effective vaccination had not been carried out. Relative monthly incidence in 2011-2018 was higher from April to August (p < 0.001). The results we obtained from 1404 necropsies on 102 farms did not clearly relate serosanguinous nasal discharge in rabbits with disease caused by GI.2 infection. We also assessed vaccination schedules used on 200 doe farms visited from the end of 2014 to 2018; 95.5% vaccinated against myxomatosis and 97.5% against RHD. Both diseases remain prevalent; however, effective vaccination has produced a steady decline in myxomatosis and RHDV GI.1 and GI.2 on-farm detection. The maintenance of high hygienic standards will be needed to continue and improve this control. However, further studies are required to investigate the causes of sustained virus presence and vaccine breaks.
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Affiliation(s)
- Joan M Rosell
- Cunivet Service. P.O. Box 518, 43080 Tarragona, Spain.
| | - L Fernando de la Fuente
- Departamento de Producción Animal, Facultad de Veterinaria, Avda. Profesor Pedro Cármenes s/n, Universidad de León, 24071 León, Spain.
| | - Francisco Parra
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, Calle Doctor Fernando Bongera s/n, 33006 Oviedo, Spain.
| | - Kevin P Dalton
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, Calle Doctor Fernando Bongera s/n, 33006 Oviedo, Spain.
| | - J Ignacio Badiola Sáiz
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Ana Pérez de Rozas
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Juan J Badiola Díez
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Calle de Miguel Servet, 177, 50013 Zaragoza, Spain.
| | - Daniel Fernández de Luco
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Calle de Miguel Servet, 177, 50013 Zaragoza, Spain.
| | - Jordi Casal
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Natàlia Majó
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Jordina Casas
- Federació d'Associacions de Cunicultors de Catalunya (FACC). Carrer Ull de Llebre, 13 08734 Olèrdola (Barcelona), Spain.
| | - Ricard Garriga
- Federació d'Associacions de Cunicultors de Catalunya (FACC). Carrer Ull de Llebre, 13 08734 Olèrdola (Barcelona), Spain.
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8
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Kwit E, Rzeżutka A. Molecular methods in detection and epidemiologic studies of rabbit and hare viruses: a review. J Vet Diagn Invest 2019; 31:497-508. [PMID: 31131728 DOI: 10.1177/1040638719852374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Various PCR-based assays for rabbit viruses have gradually replaced traditional virologic assays, such as virus isolation, because they offer high-throughput analysis, better test sensitivity and specificity, and allow vaccine and wild-type virus strains to be fully typed and differentiated. In addition, PCR is irreplaceable in the detection of uncultivable or fastidious rabbit pathogens or those occurring in low quantity in a tested sample. We provide herein an overview of the current state of the art in the molecular detection of lagomorph viral pathogens along with details of their targeted gene or nucleic acid sequence and recommendations for their application. Apart from the nucleic acids-based methods used for identification and comprehensive typing of rabbit viruses, novel methods such as microarray, next-generation sequencing, and mass spectrometry (MALDI-TOF MS) could also be employed given that they offer greater throughput in sample screening for viral pathogens. Molecular methods should be provided with an appropriate set of controls, including an internal amplification control, to confirm the validity of the results obtained.
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Affiliation(s)
- Ewa Kwit
- Department of Food and Environmental Virology, National Veterinary Research Institute, Puławy, Poland
| | - Artur Rzeżutka
- Department of Food and Environmental Virology, National Veterinary Research Institute, Puławy, Poland
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9
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Mahar JE, Read AJ, Gu X, Urakova N, Mourant R, Piper M, Haboury S, Holmes EC, Strive T, Hall RN. Detection and Circulation of a Novel Rabbit Hemorrhagic Disease Virus in Australia. Emerg Infect Dis 2018; 24:22-31. [PMID: 29260677 PMCID: PMC5749467 DOI: 10.3201/eid2401.170412] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The highly virulent rabbit hemorrhagic disease virus (RHDV) has been widely used in Australia and New Zealand since the mid-1990s to control wild rabbits, an invasive vertebrate pest in these countries. In January 2014, an exotic RHDV was detected in Australia, and 8 additional outbreaks were reported in both domestic and wild rabbits in the 15 months following its detection. Full-length genomic analysis revealed that this virus is a recombinant containing an RHDVa capsid gene and nonstructural genes most closely related to nonpathogenic rabbit caliciviruses. Nationwide monitoring efforts need to be expanded to assess if the increasing number of different RHDV variants circulating in the Australian environment will affect biological control of rabbits. At the same time, updated vaccines and vaccination protocols are urgently needed to protect pet and farmed rabbits from these novel rabbit caliciviruses.
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10
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Dalton K, Podadera A, Granda V, Nicieza I, del Llano D, González R, de los Toyos J, García Ocaña M, Vázquez F, Martín Alonso J, Prieto J, Parra F, Casais R. ELISA for detection of variant rabbit haemorrhagic disease virus RHDV2 antigen in liver extracts. J Virol Methods 2018; 251:38-42. [DOI: 10.1016/j.jviromet.2017.09.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 07/26/2017] [Accepted: 09/19/2017] [Indexed: 12/28/2022]
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11
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Rouco C, Abrantes J, Serronha A, Lopes AM, Maio E, Magalhães MJ, Blanco E, Bárcena J, Esteves PJ, Santos N, Alves PC, Monterroso P. Epidemiology of RHDV2 (Lagovirus europaeus/GI.2) in free-living wild European rabbits in Portugal. Transbound Emerg Dis 2017; 65:e373-e382. [DOI: 10.1111/tbed.12767] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Indexed: 01/29/2023]
Affiliation(s)
- C. Rouco
- Departamento de Zoología; Facultad de Ciencias de la Universidad de Córdoba; Córdoba Spain
| | - J. Abrantes
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - A. Serronha
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - A. M. Lopes
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS)/Unidade Multidisciplinar de Investigação Biomédica (UMIB); Universidade do Porto; Porto Portugal
| | - E. Maio
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - M. J. Magalhães
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - E. Blanco
- Centro de Investigación en Sanidad Animal (INIA-CISA); Valdeolmos Madrid Spain
| | - J. Bárcena
- Centro de Investigación en Sanidad Animal (INIA-CISA); Valdeolmos Madrid Spain
| | - P. J. Esteves
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
- Departamento de Biologia; Faculdade de Ciências da Universidade do Porto; Porto Portugal
| | - N. Santos
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - P. C. Alves
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
- Departamento de Biologia; Faculdade de Ciências da Universidade do Porto; Porto Portugal
- Wildlife Biology Program; University of Montana; Missoula MT USA
| | - P. Monterroso
- CIBIO/InBio; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
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12
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Dalton KP, Arnal JL, Benito AA, Chacón G, Martín Alonso JM, Parra F. Conventional and real time RT-PCR assays for the detection and differentiation of variant rabbit hemorrhagic disease virus (RHDVb) and its recombinants. J Virol Methods 2017; 251:118-122. [PMID: 29024672 DOI: 10.1016/j.jviromet.2017.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 10/06/2017] [Accepted: 10/07/2017] [Indexed: 10/18/2022]
Abstract
Since its emergence, variant RHDV (RHDVb/RHDV2) has spread throughout the Iberian Peninsula aided by the apparent lack of cross protection provided by classic (genogroup 1; G1) strain derived vaccines. In addition to RHDVb, full-length genome sequencing of RHDV strains has recently revealed the circulation of recombinant viruses on the Iberian Peninsula. These recombinant viruses contain the RHDVb structural protein encoding sequences and the non-structural coding regions of either pathogenic RHDV-G1 strains or non-pathogenic (np) rabbit caliciviruses. The aim of the work was twofold: firstly to validate a diagnostic real time RT-PCR developed in 2012 for the detection of RHDVb strains and secondly, to design a conventional RT-PCR for the differentiation of RHDVb strains from RHDVb recombinants by subsequent sequencing of the amplicon.
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Affiliation(s)
- K P Dalton
- Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo, Oviedo, Spain.
| | - J L Arnal
- Exopol S.L. Pol Río Gállego C/D, 50840 San Mateo de Gállego, Zaragoza, Spain.
| | - A A Benito
- Exopol S.L. Pol Río Gállego C/D, 50840 San Mateo de Gállego, Zaragoza, Spain.
| | - G Chacón
- Exopol S.L. Pol Río Gállego C/D, 50840 San Mateo de Gállego, Zaragoza, Spain.
| | - J M Martín Alonso
- Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo, Oviedo, Spain.
| | - F Parra
- Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo, Oviedo, Spain.
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13
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Adaptive diversification between the classic rabbit hemorrhagic disease virus (RHDV) and the RHDVa isolates: A genome-wide perspective. Microb Pathog 2017; 110:527-532. [PMID: 28743597 DOI: 10.1016/j.micpath.2017.07.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 07/20/2017] [Accepted: 07/21/2017] [Indexed: 01/23/2023]
Abstract
Rabbit haemorrhagic disease virus (RHDV) is a highly infectious pathogen that causes high mortality in wild and domestic rabbits. RHDV could be divided into two subtypes, classic RHDV and RHDVa, which present clear genetic, antigenic, and epidemiological differences. To further understand the nature of the diversity, we performed a genome-wide evolutionary study on the classic RHDV and RHDVa isolates. The results show that RHDV had experienced adaptive diversification with the dividing process of these subtypes. Furthermore, amino acid changes relevant to the adaptive diversification mainly cluster in viral capsid protein VP60. These results might be beneficial for a further understanding the function of VP60 and provide helpful hints for the genetic basis of RHDV emergence and re-emergence.
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14
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Lopes AM, Magalhães MJ, Alves PC, Esteves PJ, Abrantes J. An update on the rabbit hemorrhagic disease virus (RHDV) strains circulating in Portugal in the 1990s: earliest detection of G3-G5 and G6. Arch Virol 2017; 162:2061-2065. [PMID: 28299483 DOI: 10.1007/s00705-017-3318-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/22/2017] [Indexed: 01/23/2023]
Abstract
Rabbit hemorrhagic disease virus (RHDV) causes devastating effects on European rabbit (Oryctolagus cuniculus) populations in the Iberian Peninsula. According to the information available, only genogroup 1 strains were circulating in Iberian wild rabbits until 2011; the antigenic variant G6 has been sporadically detected in rabbitries since 2007. Here, we show for the first time that G3-G5 strains were already present in mainland Portugal in 1998 and that G6 has been circulating since at least 1999. Moreover, we report a G3-G5 strain from the Azores collected in 1998, which is the likely ancestor of Azorean G3-G5like strains. These observations improve the current knowledge on RHDV epidemiology in the Iberian Peninsula and the Azores.
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Affiliation(s)
- Ana M Lopes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.
| | - Maria J Magalhães
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Paulo C Alves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal.,Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Pedro J Esteves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal.,Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (CESPU), Gandra, Portugal
| | - Joana Abrantes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
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15
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Peacock D, Kovaliski J, Sinclair R, Mutze G, Iannella A, Capucci L. RHDV2 overcoming RHDV immunity in wild rabbits ( Oryctolagus cuniculus) in Australia. Vet Rec 2017; 180:280. [PMID: 28082661 DOI: 10.1136/vr.104135] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2016] [Indexed: 12/26/2022]
Affiliation(s)
- D Peacock
- Biosecurity SA, Adelaide, SA, Australia
| | | | - R Sinclair
- The University of Adelaide, Adelaide, SA, Australia
| | - G Mutze
- Biosecurity SA, Adelaide, SA, Australia
| | - A Iannella
- The University of Adelaide, Adelaide, SA, Australia
| | - L Capucci
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia, Brescia, Italy
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16
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Martin-Alonso A, Martin-Carrillo N, Garcia-Livia K, Valladares B, Foronda P. Emerging rabbit haemorrhagic disease virus 2 (RHDV2) at the gates of the African continent. INFECTION GENETICS AND EVOLUTION 2016; 44:46-50. [PMID: 27321441 DOI: 10.1016/j.meegid.2016.06.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 06/06/2016] [Accepted: 06/15/2016] [Indexed: 01/05/2023]
Abstract
Until the beginning of this decade, the genetic characterization of rabbit haemorrhagic disease virus (RHDV) from Iberian Peninsula had revealed the existence of two genogroups, G1 and sporadically G6. In 2010, the new emerging rabbit haemorrhagic disease variant, RHDV2 or RHDVb, was described in France, from where it has rapidly spread throughout Europe, including Iberian Peninsula countries. Nevertheless, although cases of rabbit haemorrhagic disease (RHD) have been reported in the Canary Islands, a Spanish archipelago located 100km off the coast of Morocco, no genetic characterization of RHDV had been carried out. Consequently, in order to identify the circulating RHDV strains in this archipelago, liver samples of six farm rabbits and fifteen wild rabbits were collected from several areas of the largest island, Tenerife, and analyzed for the presence of RHDV by antigen capture double antibody sandwich ELISA. In case of positive ELISA result, we amplified and sequenced two fragments of the vp60 gene, which were concatenated for phylogenetic purposes. The sequences analysis revealed the presence of RHDV2 in both farm and wild rabbits from several areas of Tenerife. This result constitutes the first finding of RHDV2 in the Canary Islands. These RHDV2 strains found in Tenerife shared two exclusive SNPs that have not been observed in the rest of RHDV2 strains. The identification of RHDV2 and the absence of classic RHDV strains in this study suggest that RHDV2 may be replacing classic strains in Tenerife, as has been also proposed in Iberian Peninsula, France and Azores. Given the proximity of the Canary Islands to the African continent, this result should raise awareness about a possible dispersal of RHDV2 from the Canary Islands to the North of Africa.
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Affiliation(s)
- Aarón Martin-Alonso
- University Institute of Tropical Diseases and Public Health of the Canary Islands, Universidad de La Laguna, Avda. Astrofísico F. Sanchez s/n, 38203 La Laguna, Tenerife, Canary Islands, Spain
| | - Natalia Martin-Carrillo
- University Institute of Tropical Diseases and Public Health of the Canary Islands, Universidad de La Laguna, Avda. Astrofísico F. Sanchez s/n, 38203 La Laguna, Tenerife, Canary Islands, Spain.
| | - Katherine Garcia-Livia
- University Institute of Tropical Diseases and Public Health of the Canary Islands, Universidad de La Laguna, Avda. Astrofísico F. Sanchez s/n, 38203 La Laguna, Tenerife, Canary Islands, Spain.
| | - Basilio Valladares
- University Institute of Tropical Diseases and Public Health of the Canary Islands, Universidad de La Laguna, Avda. Astrofísico F. Sanchez s/n, 38203 La Laguna, Tenerife, Canary Islands, Spain.
| | - Pilar Foronda
- University Institute of Tropical Diseases and Public Health of the Canary Islands, Universidad de La Laguna, Avda. Astrofísico F. Sanchez s/n, 38203 La Laguna, Tenerife, Canary Islands, Spain.
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17
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Esteves PJ, Abrantes J, Bertagnoli S, Cavadini P, Gavier-Widén D, Guitton JS, Lavazza A, Lemaitre E, Letty J, Lopes AM, Neimanis AS, Ruvoën-Clouet N, Le Pendu J, Marchandeau S, Le Gall-Reculé G. Emergence of Pathogenicity in Lagoviruses: Evolution from Pre-existing Nonpathogenic Strains or through a Species Jump? PLoS Pathog 2015; 11:e1005087. [PMID: 26540662 PMCID: PMC4634945 DOI: 10.1371/journal.ppat.1005087] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Pedro José Esteves
- InBIO—Research Network in Biodiversity and Evolutionary Biology, CIBIO, Campus de Vairão, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Gandra, Portugal
- * E-mail:
| | - Joana Abrantes
- InBIO—Research Network in Biodiversity and Evolutionary Biology, CIBIO, Campus de Vairão, Universidade do Porto, Vairão, Portugal
| | - Stéphane Bertagnoli
- UMR 1225, INRA, Toulouse, France
- INP-ENVT, University of Toulouse, Toulouse, France
| | - Patrizia Cavadini
- Proteomic Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna “Bruno Ubertini”, Brescia, Italy
| | - Dolores Gavier-Widén
- Department of Pathology and Wildlife Diseases, National Veterinary Institute, Uppsala, Sweden
| | - Jean-Sébastien Guitton
- Department of Studies and Research, National Hunting and Wildlife Agency (ONCFS), Nantes, France
| | - Antonio Lavazza
- Virology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna “Bruno Ubertini”, Brescia, Italy
| | - Evelyne Lemaitre
- Avian and Rabbit Virology Immunology Parasitology Unit, Ploufragan-Plouzané Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (Anses), Ploufragan, France
- European University of Brittany, Rennes, France
| | - Jérôme Letty
- Department of Studies and Research, National Hunting and Wildlife Agency (ONCFS), Nantes, France
| | - Ana Margarida Lopes
- InBIO—Research Network in Biodiversity and Evolutionary Biology, CIBIO, Campus de Vairão, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Aleksija S. Neimanis
- Department of Pathology and Wildlife Diseases, National Veterinary Institute, Uppsala, Sweden
| | | | | | - Stéphane Marchandeau
- Department of Studies and Research, National Hunting and Wildlife Agency (ONCFS), Nantes, France
| | - Ghislaine Le Gall-Reculé
- Avian and Rabbit Virology Immunology Parasitology Unit, Ploufragan-Plouzané Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (Anses), Ploufragan, France
- European University of Brittany, Rennes, France
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18
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Bárcena J, Guerra B, Angulo I, González J, Valcárcel F, Mata CP, Castón JR, Blanco E, Alejo A. Comparative analysis of rabbit hemorrhagic disease virus (RHDV) and new RHDV2 virus antigenicity, using specific virus-like particles. Vet Res 2015; 46:106. [PMID: 26403184 PMCID: PMC4581117 DOI: 10.1186/s13567-015-0245-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/12/2015] [Indexed: 12/22/2022] Open
Abstract
In 2010 a new Lagovirus related to rabbit haemorrhagic disease virus (RHDV) emerged in France and has since rapidly spread throughout domestic and wild rabbit populations of several European countries. The new virus, termed RHDV2, exhibits distinctive genetic, antigenic and pathogenic features. Notably, RHDV2 kills rabbits previously vaccinated with RHDV vaccines. Here we report for the first time the generation and characterization of RHDV2-specific virus-like particles (VLPs). Our results further confirmed the differential antigenic properties exhibited by RHDV and RHDV2, highlighting the need of using RHDV2-specific diagnostic assays to monitor the spread of this new virus.
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Affiliation(s)
- Juan Bárcena
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
| | - Beatriz Guerra
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
| | - Iván Angulo
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
| | - Julia González
- Villamagna SA, Finca "La Garganta", Villanueva de Córdoba, Córdoba, Spain.
| | - Félix Valcárcel
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
| | - Carlos P Mata
- Department of Structure of Macromolecules, Centro Nacional de Biotecnología/CSIC, Cantoblanco, Madrid, Spain.
| | - José R Castón
- Department of Structure of Macromolecules, Centro Nacional de Biotecnología/CSIC, Cantoblanco, Madrid, Spain.
| | - Esther Blanco
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
| | - Alí Alejo
- Centro de Investigación en Sanidad Animal (INIA-CISA), Valdeolmos, Madrid, Spain.
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19
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Almeida T, Lopes AM, Magalhães MJ, Neves F, Pinheiro A, Gonçalves D, Leitão M, Esteves PJ, Abrantes J. Tracking the evolution of the G1/RHDVb recombinant strains introduced from the Iberian Peninsula to the Azores islands, Portugal. INFECTION GENETICS AND EVOLUTION 2015; 34:307-13. [DOI: 10.1016/j.meegid.2015.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 07/06/2015] [Accepted: 07/08/2015] [Indexed: 11/25/2022]
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20
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Dalton KP, Abrantes J, Lopes AM, Nicieza I, Álvarez ÁL, Esteves PJ, Parra F. Complete genome sequence of two rabbit hemorrhagic disease virus variant b isolates detected on the Iberian Peninsula. Arch Virol 2015; 160:877-81. [PMID: 25577166 DOI: 10.1007/s00705-014-2329-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 12/30/2014] [Indexed: 10/24/2022]
Abstract
We report the complete genome sequences of two isolates (RHDV-N11 and CBVal16) of variant rabbit hemorrhagic disease virus (RHDVb). Isolate N11 was detected in young domestic animals during a rabbit hemorrhagic disease (RHD) outbreak that occurred in 2011 on a rabbit farm in Navarra, Spain, while CBVal16 was isolated from a wild rabbit found dead in Valpaços, Northern Portugal, a year later. The viral sequences reported show 84.8-85.1 % and 78.3-78.5 % identity to RHDVAst/89 and RCV-A1 MIC-07, representative members of the pathogenic genogroup 1 RHDV and apathogenic rabbit calicivirus, respectively. In comparison with other RHDV isolates belonging to the previously known genogroups 1-6, RHDVb shows marked phenotypic differences, as it causes disease preferentially in young rabbits under 40 days of age and shows modified red blood cell agglutination profiles as well as antigenic differences that allow this variant to escape protection by the currently available vaccines.
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Affiliation(s)
- K P Dalton
- Instituto Universitario de Biotecnología de Asturias, Universidad de Oviedo, Oviedo, Spain,
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21
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Is the new variant RHDV replacing genogroup 1 in Portuguese wild rabbit populations? Viruses 2014; 7:27-36. [PMID: 25559218 PMCID: PMC4306826 DOI: 10.3390/v7010027] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 12/19/2014] [Indexed: 11/21/2022] Open
Abstract
The Lagovirus rabbit hemorrhagic disease virus (RHDV), a member of the family Caliciviridae, severely affects European rabbit (Oryctolagus cuniculus) populations by causing rabbit hemorrhagic disease (RHD). RHDV is subdivided in six genogroups but, more recently, a new RHDV variant with a unique genetic and antigenic profile emerged. We performed a study in rabbits found dead in the field during 2013 and 2014 in Portugal to determine the prevalence of this new variant versus the classical RHDV. Fifty-seven liver samples were screened for the presence of RHDV and positive samples were genotyped. All cases of RHDV infection were caused by the new variant. The only former genogroup circulating in Portugal, G1, was not detected. We hence conclude that the new RHDV variant is replacing G1 in Portugal, probably due to a selective advantage. This sudden and rapid replacement emphasizes the necessity of continued monitoring of wild rabbit populations.
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22
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Viral biocontrol: grand experiments in disease emergence and evolution. Trends Microbiol 2014; 23:83-90. [PMID: 25455418 DOI: 10.1016/j.tim.2014.10.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 10/08/2014] [Accepted: 10/10/2014] [Indexed: 02/05/2023]
Abstract
Although viral emergence is commonly associated with cross-species transmission, the processes and determinants of viral evolution in a novel host environment are poorly understood. We address key questions in virus emergence and evolution using data generated from two unique natural experiments: the deliberate release of myxoma virus (MYXV) and rabbit hemorrhagic disease virus (RHDV) as biological control (biocontrol) agents against the European rabbit in Australia, and which have been of enormous benefit to Australia's ecosystem and agricultural industries. Notably, although virulence evolution in MYXV and RHDV followed different trajectories, a strongly parallel evolutionary process was observed in Australia and Europe. These biocontrol agents were also characterized by a lack of transmission to nontarget host species, suggesting that there are major barriers to successful emergence.
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23
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Detection of RHDV strains in the Iberian hare (Lepus granatensis): earliest evidence of rabbit lagovirus cross-species infection. Vet Res 2014; 45:94. [PMID: 25248407 PMCID: PMC4189657 DOI: 10.1186/s13567-014-0094-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 08/08/2014] [Indexed: 11/10/2022] Open
Abstract
Rabbit hemorrhagic disease virus (RHDV) is a highly lethal Lagovirus, family Caliciviridae, that threatens European rabbits (Oryctolagus cuniculus). Although a related virus severely affects hares, cross-species infection was only recently described for new variant RHDV in Cape hares (Lepus capensis mediterraneus). We sequenced two strains from dead Iberian hares (Lepus granatensis) collected in the 1990s in Portugal. Clinical signs were compatible with a Lagovirus infection. Phylogenetic analysis of the complete capsid gene positioned them in the RHDV genogroup that circulated on the Iberian Peninsula at that time. This is the earliest evidence of RHDV affecting a species other than European rabbits.
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