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Prpić J, Kunić A, Keros T, Lojkić I, Brnić D, Jemeršić L. Absence of Hepatitis E Virus (HEV) Circulation in the Most Widespread Wild Croatian Canine Species, the Red Fox ( Vulpes vulpes) and Jackal ( Canis aureus moreoticus). Microorganisms 2023; 11:microorganisms11040834. [PMID: 37110256 PMCID: PMC10145003 DOI: 10.3390/microorganisms11040834] [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: 02/27/2023] [Revised: 03/11/2023] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
Hepatitis E virus (HEV) can infect a wide range of domestic and wild animals, and the identification of new host species is reported successively worldwide. Nevertheless, its zoonotic potential and natural transmission, especially in wildlife remains unclear, primarily due to the discrete nature of HEV infections. Since the red fox (Vulpus vulpus) is the most widespread carnivore worldwide, and has been recognized as a potential HEV reservoir, its role as a potent host species is of increasing interest. Another wild canine species, the jackal (Canis aureus moreoticus), is becoming more important within the same habitat as that of the red fox since its number and geographical distribution have been rapidly growing. Therefore, we have chosen these wild species to determine their potential role in the epidemiology and persistence of HEV in the wilderness. The main reason for this is the finding of HEV and a rather high HEV seroprevalence in wild boars sharing the same ecological niche as the wild canine species, as well as the risk of the spread of HEV through red foxes into the outskirts of cities, where possible indirect and even direct contact with people are not excluded. Therefore, our study aimed to investigate the possibility of natural HEV infection of free-living wild canines, by testing samples for the presence of HEV RNA and anti-HEV antibodies to gain better epidemiological knowledge of the disease. For this purpose, 692 red fox and 171 jackal muscle extracts and feces samples were tested. Neither HEV RNA nor anti-HEV antibodies were detected. Although HEV circulation was not detected in the tested samples, to our knowledge, these are the first results that include jackals as a growing and important omnivore wildlife species for the presence of HEV infection in Europe.
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Affiliation(s)
- Jelena Prpić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Ana Kunić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Tomislav Keros
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Ivana Lojkić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Dragan Brnić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Lorena Jemeršić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
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Su K, Xue J, Shan X, Ye H, Zhang L, Tan S, Shao J, Shi Y, Wang Z, Zhang L. Review of Detection and Quantification of Rabies Virus Antibodies. Viral Immunol 2021; 34:522-530. [PMID: 34550784 DOI: 10.1089/vim.2020.0317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Rabies is an almost invariably fatal disease. According to the World Health Organization (WHO), rabies virus neutralizing antibody (RVNA) titers of ≥0.5 IU/mL are considered adequate for rabies protection. Therefore, detection and quantification of RABV antibodies are important. Many methods have been developed for detecting RABV antibodies. In the present study, we reviewed several methods of detecting RABV antibodies in human and animal samples and evaluated and compared their performance. Of 34 methods, 5 demonstrated unsatisfactory sensitivity or specificity. The others exhibited sensitivity and specificity of ≥75%. The correlation coefficient for five of eight methods was >0.8. The Bland-Altman mean bias of five of five methods was <±2.0. The kappa values of 25 of 28 methods were higher than 0.4, demonstrating at least moderate agreement. Analysis of the performance of these methods emphasized that any new technology should be considered carefully and objectively before being used as an appropriate and applicable alternative.
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Affiliation(s)
- Kewen Su
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Jian Xue
- School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Xiaoyue Shan
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Haipeng Ye
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Ling Zhang
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Siwei Tan
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Ji Shao
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Yanpeng Shi
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
| | - Zhe Wang
- Institute for Communicable Disease Control and Prevention, Hangzhou Center for Disease Control and Prevention, Hangzhou, China
| | - Lei Zhang
- Department of Sanitary Analysis, Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hangzhou, China
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Jemeršić L, Lojkić I, Krešić N, Keros T, Zelenika TA, Jurinović L, Skok D, Bata I, Boras J, Habrun B, Brnić D. Investigating the Presence of SARS CoV-2 in Free-Living and Captive Animals. Pathogens 2021; 10:635. [PMID: 34064271 PMCID: PMC8224323 DOI: 10.3390/pathogens10060635] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/15/2022] Open
Abstract
Due to SARS CoV-2 recombination rates, number of infected people and recent reports of environmental contamination, the possibility of SARS CoV-2 transmission to animals can be expected. We tested samples of dominant free-living and captive wildlife species in Croatia for the presence of anti-SARS CoV-2 antibodies and viral RNA. In total, from June 2020 until February 2021, we tested blood, muscle extract and fecal samples of 422 free-living wild boars (Sus scrofa), red foxes (Vulpes vulpes) and jackals (Canis aureus); blood and cloacal swabs of 111 yellow-legged gulls (Larus michahellis) and fecal samples of 32 zoo animals. A commercially available ELISA (ID.Vet, France) and as a confirmatory test, a surrogate virus neutralization test (sVNT; GenScript, Netherlands) were used. Fecal samples were tested for the presence of viral RNA by a real-time RT-PCR protocol. Fifteen out of 533 (2.8%) positive ELISA results were detected; in wild boars (3.9%), red foxes (2.9%) and jackals (4.6%). However, the positive findings were not confirmed by sVNT. No viral RNA was found. In conclusion, no spillover occurred within the investigated period (second COVID-19 wave). However, further investigation is needed, especially regarding wildlife sample features for serological tests.
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Affiliation(s)
- Lorena Jemeršić
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
| | - Ivana Lojkić
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
| | - Nina Krešić
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
| | - Tomislav Keros
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
| | - Tajana Amšel Zelenika
- Poultry Center, Croatian Veterinary Institute, Heinzelova 55, 10000 Zagreb, Croatia; (T.A.Z.); (L.J.)
| | - Luka Jurinović
- Poultry Center, Croatian Veterinary Institute, Heinzelova 55, 10000 Zagreb, Croatia; (T.A.Z.); (L.J.)
| | - Damir Skok
- Zagreb Zoo, Maksimirski Perivoj, 10000 Zagreb, Croatia; (D.S.); (I.B.); (J.B.)
| | - Ingeborg Bata
- Zagreb Zoo, Maksimirski Perivoj, 10000 Zagreb, Croatia; (D.S.); (I.B.); (J.B.)
| | - Jadranko Boras
- Zagreb Zoo, Maksimirski Perivoj, 10000 Zagreb, Croatia; (D.S.); (I.B.); (J.B.)
| | - Boris Habrun
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
| | - Dragan Brnić
- Virology Department, Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia; (N.K.); (T.K.); (B.H.); (D.B.)
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Dascalu MA, Wasniewski M, Picard-Meyer E, Servat A, Daraban Bocaneti F, Tanase OI, Velescu E, Cliquet F. Detection of rabies antibodies in wild boars in north-east Romania by a rabies ELISA test. BMC Vet Res 2019; 15:466. [PMID: 31864363 PMCID: PMC6925894 DOI: 10.1186/s12917-019-2209-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 12/09/2019] [Indexed: 11/30/2022] Open
Abstract
Background In the last few decades, Romania has been considered one of the European countries most affected by animal rabies, but a combination of oral rabies vaccination (ORV) campaigns in foxes alongside mandatory vaccination of pets has substantially decreased the number of rabies cases in recent years. The objective of this study was to detect rabies antibodies in wild boar serum and thoracic fluid samples collected during the hunting season after ORV campaigns in north-eastern Romania in order to identify if wild boars are substantial competitors to foxes for ORV baits. Results When the 312 wild boar samples were tested by ELISA (BioPro ELISA, Czech Republic), 42.31% (132/312) demonstrated rabies antibodies. In order to compare these wild boar results in terms of the percentage of immunisation, fox samples were also included in the study, and in this case only 28.40% (98/345) demonstrated rabies antibodies by ELISA. To check the diagnostic sensitivity and specificity of this ELISA, those samples with a sufficient volume from both species that had tested either negative or positive with an initial ELISA were then tested with the Fluorescent Antibody Virus Neutralisation (FAVN) assay. The overall concordance between the BioPro ELISA and FAVN test was 74.26% (75/101) in wild boar samples and 65.66% (65/99) in fox samples, 140 out of 200 samples being correlated with the two methods, although no significant statistical difference (p = 0.218) between the two species was registered. We found a good agreement by both tests for the ELISA-positive samples (91.30%), however the situation was different for the ELISA-negative samples, where a low agreement was demonstrated (41.18%). Conclusions This study reports for the first time the presence of rabies antibodies in wild boar samples collected during the hunting season in Romania after ORV campaigns in rabies endemic areas. It is also the first study to demonstrate that ELISA BioPro can be used on wild boar samples with satisfactory results compared to the FAVN test for this species.
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Affiliation(s)
- Mihaela Anca Dascalu
- Department of Public Health, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Mihail Sadoveanu Alley, No. 8, 700489, Iasi, Romania.
| | - Marine Wasniewski
- ANSES, Nancy Laboratory for Rabies and Wildlife, WHO Collaborating Centre for Research and Management in Zoonoses Control, OIE Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies Serology, Technopôle Agricole et Vétérinaire, CS 40009, 54220, Malzéville, France
| | - Evelyne Picard-Meyer
- ANSES, Nancy Laboratory for Rabies and Wildlife, WHO Collaborating Centre for Research and Management in Zoonoses Control, OIE Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies Serology, Technopôle Agricole et Vétérinaire, CS 40009, 54220, Malzéville, France
| | - Alexandre Servat
- ANSES, Nancy Laboratory for Rabies and Wildlife, WHO Collaborating Centre for Research and Management in Zoonoses Control, OIE Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies Serology, Technopôle Agricole et Vétérinaire, CS 40009, 54220, Malzéville, France
| | - Florentina Daraban Bocaneti
- Department of Public Health, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Mihail Sadoveanu Alley, No. 8, 700489, Iasi, Romania
| | - Oana Irina Tanase
- Department of Public Health, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Mihail Sadoveanu Alley, No. 8, 700489, Iasi, Romania
| | - Elena Velescu
- Department of Public Health, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Mihail Sadoveanu Alley, No. 8, 700489, Iasi, Romania
| | - Florence Cliquet
- ANSES, Nancy Laboratory for Rabies and Wildlife, WHO Collaborating Centre for Research and Management in Zoonoses Control, OIE Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies, European Union Reference Laboratory for Rabies Serology, Technopôle Agricole et Vétérinaire, CS 40009, 54220, Malzéville, France
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Bedeković T, Lohman Janković I, Šimić I, Krešić N, Lojkić I, Sučec I, Robardet E, Cliquet F. Control and elimination of rabies in Croatia. PLoS One 2018; 13:e0204115. [PMID: 30235274 PMCID: PMC6147469 DOI: 10.1371/journal.pone.0204115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 09/04/2018] [Indexed: 11/18/2022] Open
Abstract
Despite the implementation of control measures (preventive dog vaccination), rabies has become endemic in Croatia, with red foxes being the main reservoir species. Oral rabies vaccination (ORV) campaigns supported by the European Commission have been conducted twice a year since the spring of 2011. The first campaigns were limited to the northern and eastern parts of the country, and from the autumn of 2012, the program was extended to the entire country. The Lysvulpen vaccine containing the SAD Bern strain was used for ORV. Following the vaccination campaigns, the number of rabies cases decreased, and the last positive case was recorded in February 2014. The bait uptake ranged from 24.86% to 84.62% and the immunisation rate from 11.24% to 35.64%.
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Affiliation(s)
| | | | - Ivana Šimić
- Croatian Veterinary Institute, Zagreb, Croatia
| | - Nina Krešić
- Croatian Veterinary Institute, Zagreb, Croatia
| | | | | | - Emmanuelle Robardet
- Nancy OIE/WHO/EU Laboratory for Rabies and Wildlife, French Agency for Food, Environmental and Occupational Health &Safety, Malzéville, France
| | - Florence Cliquet
- Nancy OIE/WHO/EU Laboratory for Rabies and Wildlife, French Agency for Food, Environmental and Occupational Health &Safety, Malzéville, France
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Šimić I, Lojkić I, Krešić N, Cliquet F, Picard-Meyer E, Wasniewski M, Ćukušić A, Zrnčić V, Bedeković T. Molecular and serological survey of lyssaviruses in Croatian bat populations. BMC Vet Res 2018; 14:274. [PMID: 30189884 PMCID: PMC6127996 DOI: 10.1186/s12917-018-1592-z] [Citation(s) in RCA: 9] [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: 05/07/2018] [Accepted: 08/23/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rabies is the only known zoonotic disease of bat origin in Europe. The disease is caused by species belonging to the genus Lyssavirus. Five Lyssavirus species, i.e., European bat lyssavirus (EBLV)-1, EBLV-2, Bokeloh bat lyssavirus, Lleida bat lyssavirus, and West Caucasian bat virus, have been identified in European bats. More recently, a proposed sixth species, Kotalahti bat lyssavirus, was detected. Thus, in this study, active surveillance was initiated in order to obtain insights into the prevalence of lyssaviruses in Croatian bat populations and to improve our understanding of the public health threat of infected bats. RESULTS In total, 455 bats were caught throughout Continental and Mediterranean Croatia. Antibodies were found in 20 of 350 bats (5.71%, 95% confidence interval 3.73-8.66). The majority of seropositive bats were found in Trbušnjak cave (Continental Croatia, Eastern part), and most seropositive bats belonged to Myotis myotis (13/20). All oropharyngeal swabs were negative for the presence of Lyssavirus. CONCLUSIONS The presence of lyssaviruses in bat populations was confirmed for the first time in Croatia and Southeastern Europe. The results of this study suggest the need for further comprehensive analyses of lyssaviruses in bats in this part of Europe.
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Affiliation(s)
- Ivana Šimić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Ivana Lojkić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Nina Krešić
- Croatian Veterinary Institute, Savska cesta 143, 10000 Zagreb, Croatia
| | - Florence Cliquet
- ANSES - Nancy Laboratory for rabies and wildlife, Batiment H CS 40009, 54220 Malzeville, France
| | - Evelyne Picard-Meyer
- ANSES - Nancy Laboratory for rabies and wildlife, Batiment H CS 40009, 54220 Malzeville, France
| | - Marine Wasniewski
- ANSES - Nancy Laboratory for rabies and wildlife, Batiment H CS 40009, 54220 Malzeville, France
| | - Anđela Ćukušić
- Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia
| | - Vida Zrnčić
- Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia
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Manalo DL, Yamada K, Watanabe I, Miranda MEG, Lapiz SMD, Tapdasan E, Petspophonsakul W, Inoue S, Khawplod P, Nishizono A. A Comparative Study of the RAPINA and the Virus-Neutralizing Test (RFFIT) for the Estimation of Antirabies-Neutralizing Antibody Levels in Dog Samples. Zoonoses Public Health 2016; 64:355-362. [PMID: 27863040 DOI: 10.1111/zph.12313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Indexed: 11/27/2022]
Abstract
The mass vaccination of dogs against rabies is a highly rational strategy for interrupting the natural transmission of urban rabies. According to the World Organization for Animal Health (OIE) and the World Health Organization (WHO), the immunization of at least 70% of the total dog population minimizes the risk of endemic rabies. Knowledge of the virus-neutralizing antibody (VNA) level against the rabies virus (RABV) is required to evaluate protective immunity and vaccine coverage of dogs in the field. The rapid focus fluorescent inhibition test (RFFIT) and the fluorescent antibody virus neutralization (FAVN) test are recommended by OIE and WHO to determine the VNA levels in serum. However, these tests are cell culture based and require the use of live viruses and specialized equipment. The rapid neutralizing antibody test (RAPINA) is a novel, immunochromatographic test that uses inactivated virus to estimate the VNA level qualitatively. It is a simple, rapid and inexpensive, although indirect, assay for the detection of VNA levels. The RAPINA has shown good positive and negative predictive values and a high concordance with the RFFIT results. In this study, we compared the performance of the two tests for evaluating the vaccination status of dogs in the Philippines, Thailand and Japan. A total of 1135 dog sera were analysed by the RAPINA and compared to the VNA levels determined by the RFFIT. The overall positive and negative predictive values of the RAPINA were 96.2-99.3% and 84.5-94.8%, respectively, with a concordance (kappa) of 0.946-0.97 among the three countries. The RAPINA results were highly homologous and reproducible among different laboratories. These results suggest that this test is appropriate to survey vaccination coverage in countries with limited resources.
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Affiliation(s)
- D L Manalo
- Department of Health, Research Institute for Tropical Medicine (RITM-DOH), Alabang, Philippines
| | - K Yamada
- Research Promotion Institute, Faculty of Medicine, Oita University, Hasama-machi, Yufu City, Oita, Japan
| | - I Watanabe
- Department of Microbiology, Faculty of Medicine, Oita University, Hasama-machi, Yufu City, Oita, Japan
| | - M E G Miranda
- Department of Health, Research Institute for Tropical Medicine (RITM-DOH), Alabang, Philippines
| | - S M D Lapiz
- Office of the Provincial Veterinarian, Tagbilaran, Bohol, Philippines
| | - E Tapdasan
- Office of the Provincial Veterinarian, Tagbilaran, Bohol, Philippines
| | - W Petspophonsakul
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Lanna Dog Welfare, Chiang Mai, Thailand
| | - S Inoue
- Department of Veterinary Medicine, National Institute of Infectious Diseases, Tokyo, Japan
| | - P Khawplod
- Queen Saovabha Memorial Institute, Thai Red Cross Society, Bangkok, Thailand
| | - A Nishizono
- Department of Microbiology, Faculty of Medicine, Oita University, Hasama-machi, Yufu City, Oita, Japan
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Wasniewski M, Almeida I, Baur A, Bedekovic T, Boncea D, Chaves LB, David D, De Benedictis P, Dobrostana M, Giraud P, Hostnik P, Jaceviciene I, Kenklies S, König M, Mähar K, Mojzis M, Moore S, Mrenoski S, Müller T, Ngoepe E, Nishimura M, Nokireki T, Pejovic N, Smreczak M, Strandbygaard B, Wodak E, Cliquet F. First international collaborative study to evaluate rabies antibody detection method for use in monitoring the effectiveness of oral vaccination programmes in fox and raccoon dog in Europe. J Virol Methods 2016; 238:77-85. [PMID: 27751949 DOI: 10.1016/j.jviromet.2016.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/06/2016] [Accepted: 10/13/2016] [Indexed: 10/20/2022]
Abstract
The most effective and sustainable method to control and eliminate rabies in wildlife is the oral rabies vaccination (ORV) of target species, namely foxes and raccoon dogs in Europe. According to WHO and OIE, the effectiveness of oral vaccination campaigns should be regularly assessed via disease surveillance and ORV antibody monitoring. Rabies antibodies are generally screened for in field animal cadavers, whose body fluids are often of poor quality. Therefore, the use of alternative methods such as the enzyme-linked immunosorbent assay (ELISA) has been proposed to improve reliability of serological results obtained on wildlife samples. We undertook an international collaborative study to determine if the commercial BioPro ELISA Rabies Ab kit is a reliable and reproducible tool for rabies serological testing. Our results reveal that the overall specificity evaluated on naive samples reached 96.7%, and the coefficients of concordance obtained for fox and raccoon dog samples were 97.2% and 97.5%, respectively. The overall agreement values obtained for the four marketed oral vaccines used in Europe were all equal to or greater than 95%. The coefficients of concordance obtained by laboratories ranged from 87.2% to 100%. The results of this collaborative study show good robustness and reproducibility of the BioPro ELISA Rabies Ab kit.
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Affiliation(s)
- M Wasniewski
- ANSES - Nancy Laboratory for Rabies and Wildlife, Technopôle Agricole et Vétérinaire, CS 40009, 54220 Malzéville, France.
| | - I Almeida
- Laboratório Nacional de Investigação Veterinária (LNIV), Estrada de Benfica No 701, 1549-011 Lisboa, Portugal
| | - A Baur
- Vet Med Labor GmbH, Division of IDEXX Laboratories, Mörikestr. 28/3, 71636 Ludwigsburg, Germany
| | - T Bedekovic
- Croatian Veterinary Institute Laboratory for Rabies/Virology, Savska cesta 143, Zagreb 10000, Croatia
| | - D Boncea
- Institute for Diagnosis and Animal Health, NRL For Rabies, no 63, Dr. Staicovici Street, sector 5 050557 Bucharest, Romania
| | - L B Chaves
- Laboratório de Diagnóstico da Raiva, Instituto Pasteur - Secretaria de Estado da Saúde de São Paulo, Avenida Paulista, 393 - Cerqueira César, São Paulo/SP 01311-000, Brazil
| | - D David
- Kimron Veterinary Institute Rabies Laboratory, Derech Hamacabim street, Bet Dagan 50250, Israel
| | - P De Benedictis
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10, 35020 Legnaro, Padova, Italy
| | - M Dobrostana
- Institute of Food Safety, Animal Health and Environment "BIOR" Animal Diseases Diagnostic Laboratory, Lejupes iela 3, LV-1076 Riga, Latvia
| | - P Giraud
- Laboratoire Départemental d'Analyses du Pas-de-Calais, Parc de Hautes technologies des Bonnettes 2, rue du genévrier, 62022 Arras cedex 2, France
| | - P Hostnik
- National Veterinary Institute, Laboratory for Virology, Gerbiceva 60, 1 000 Ljubljana, Slovenia
| | - I Jaceviciene
- National Food and Veterinary Risk Assessment Institute, Virology Unit, Kairiukscio Str. 10, LT-08409 Vilnius, Lithuania
| | - S Kenklies
- Landesamt für Verbraucherschutz Sachsen-Anhalt, Fachbereich Veterinärmedizin, Haferbreiter Weg 132-135, 39576 Stendal, Germany
| | - M König
- Institute of Virology, Faculty of Veterinary Medicine, JLU-Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - K Mähar
- Estonian Veterinary and Food Laboratory, Virology and Serology Department, Kreutzwaldi 30, 51 006 Tartu, Estonia
| | - M Mojzis
- State Veterinary Institute Zvolen, Pod drahami 918, 960 86 Zvolen, Slovakia
| | - S Moore
- Kansas State University Rabies Laboratory, 2005 Research Park Circle, Manhattan, KS 66502, USA
| | - S Mrenoski
- University Ss Cyril and Methodius in Skopje, Faculty of Veterinary Medicine in Skopje, Department for Microbiology and Immunology, Lazar Pop Trajkov 5-7, 1000 Skopje, Republic of Macedonia
| | - T Müller
- Institute of Molecular Biology, Friedrich-Loeffler-Institute, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald - Insel Riems, Germany
| | - E Ngoepe
- Agricultural Research Council-Onderstepoort Veterinary Institute (ARC-OVI), 100 old Soutpan road, Onderstepoort 0110 Pretoria, South Africa
| | - M Nishimura
- Research Institute for Animal Science In Biochemistry and Toxicology, 3-7-11, Hashimotodai, Midori-ku, Sagamihara-Kanagawa 252-0132, Japan
| | - T Nokireki
- Finnish Food Safety Authority, Evira Department Veterinary Virology, Mustialankatu, 3 00790 Helsinki, Finland
| | - N Pejovic
- Diagnostic Veterinary Laboratory - Podgorica Bul. Dzordza Vasingtona, bb p.fah 69, 81000 Podgorica, Montenegro
| | - M Smreczak
- National Veterinary Research Institute, Department of Virology, Partyzanow av. 57, 24-100 Pulawy, Poland
| | - B Strandbygaard
- DTU, National Veterinary Institute Division of Virology, Lindholm Kalvehave Havnevej 51 DK- 4771 Kalvehave, Denmark
| | - E Wodak
- AGES, Institute for Veterinary Disease Control Mödling, Department for Virology Robert Koch Gasse 17 A-2340 Mödling, Austria
| | - F Cliquet
- ANSES - Nancy Laboratory for Rabies and Wildlife, Technopôle Agricole et Vétérinaire, CS 40009, 54220 Malzéville, France
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Bedeković T, Šimić I, Krešić N, Lojkić I, Mihaljević Ž, Sučec I, Janković IL, Hostnik P. Evaluation of ELISA for the detection of rabies virus antibodies from the thoracic liquid and muscle extract samples in the monitoring of fox oral vaccination campaigns. BMC Vet Res 2016; 12:76. [PMID: 27164987 PMCID: PMC4862130 DOI: 10.1186/s12917-016-0701-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 05/04/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The main goal of oral vaccination of foxes is eradication of rabies in the red fox population as rabies reservoirs. To evaluate the success of vaccination a serological testing is conducted as a part of monitoring program. Two different methods are used regarding rabies serology: virus neutralisation test and ELISA. METHODS In this study the reliability of BioPro ELISA was evaluated for testing haemolytic thoracic liquids and muscle extracts originated from 147 foxes in comparison to mFAVN. Also, the influence of heat treatment of samples on test results was investigated. RESULTS The specificity of the test for not-heat treated samples was 92.98% and sensitivity 79.20%. Diagnostic validity of the ELISA compared to the mFAVN test when not-heat treated samples were used was 89.16%. The specificity of the test for heat treated samples was 79.10% and sensitivity 96.36%. Diagnostic validity of the BioPro ELISA compared to the mFAVN test for heat treated samples was 94.30%. CONCLUSION According to this study, the BioPro ELISA is reliable tool for detection of rabies specific antibodies in the context of evaluation of oral vaccination of foxes from poor quality samples as a substitution for virus neutralisation tests.
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Affiliation(s)
- Tomislav Bedeković
- Croatian Veterinary Institute, Savska cesta 143, 10000, Zagreb, Croatia.
| | - Ivana Šimić
- Croatian Veterinary Institute, Savska cesta 143, 10000, Zagreb, Croatia
| | - Nina Krešić
- Croatian Veterinary Institute, Savska cesta 143, 10000, Zagreb, Croatia
| | - Ivana Lojkić
- Croatian Veterinary Institute, Savska cesta 143, 10000, Zagreb, Croatia
| | - Željko Mihaljević
- Croatian Veterinary Institute, Savska cesta 143, 10000, Zagreb, Croatia
| | - Ivica Sučec
- Veterinary Directorate, Planinska 2a, 10000, Zagreb, Croatia
| | | | - Peter Hostnik
- University of Ljubljana, Veterinary Faculty, Gerbičeva 60, 1115, Ljubljana, Slovenia
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Shiraishi R, Hirayama N. Cytotoxicity associated with prolonged room temperature storage of serum and proposed methods for reduction of cytotoxicity. J Virol Methods 2015; 225:16-22. [PMID: 26335960 DOI: 10.1016/j.jviromet.2015.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 08/26/2015] [Accepted: 08/27/2015] [Indexed: 11/29/2022]
Abstract
Canine serum preserved at room temperature (25°C) for longer than 24h is known to exhibit significant cytotoxicity. This phenomenon is one of the major reasons for the failure of virus neutralization tests. In this study, a method for reducing this cytotoxicity was investigated by applying several treatments to dog, cat and human serum prior to room temperature storage. Additionally, the identity of the cytotoxic factor generated during room temperature storage was investigated. Heat-inactivation at 56°C or 65°C and the addition of protease inhibitor prior to storage were found to be effective for reducing cytotoxicity in the serum. Furthermore, heat-inactivation at 65°C reduced the cytotoxicity that was induced under room temperature storage. Several protein factors in serum were suspected to play a role in the observed cytotoxicity. According to this study, the membrane-attack-complex in serum was not involved in the cytotoxicity. This study provides useful information for development and improvement of cell culture and virus neutralization tests.
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Affiliation(s)
- Rikiya Shiraishi
- Research Institute for Animal Science in Biochemistry & Toxicology, 3-7-11 Hashimotodai, Midori-ku, Sagamihara, Kanagawa 252-0132, Japan.
| | - Norio Hirayama
- Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Use of filter paper blood samples for rabies antibody detection in foxes and raccoon dogs. J Virol Methods 2014; 204:11-6. [PMID: 24731929 DOI: 10.1016/j.jviromet.2014.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 04/01/2014] [Accepted: 04/04/2014] [Indexed: 12/24/2022]
Abstract
The effectiveness of oral rabies vaccination in wildlife is usually evaluated by the detection of rabies antibodies. However, the assessment of rabies antibodies has several technical difficulties in the field, such as the collection, storage, transport and titration of blood samples, often of poor quality. The objective of this study was to assess the feasibility of collecting blood on a filter paper (FP) coupled with enzyme-linked immunosorbent assay (ELISA) titration of rabies antibodies in raccoon dogs and red foxes. The FP blood sampling method was found highly specific and repeatable in both species. Overall, results obtained with the FP sampling method were highly concordant with the conventional (venipuncture) sampling methods. Blood eluates from FP samples from foxes and raccoon dogs tested using ELISA showed concordance values of 92% and 95%, respectively, with serum samples tested using the seroneutralisation test and values of 95% and 91%, respectively, when the ELISA was used on both types of sample. The use of FP blood sampling coupled with the titration of rabies antibodies by ELISA provides a reliable alternative to conventional blood sampling and serum testing by seroneutralisation. This simple procedure is particularly attractive and cost-effective for assessing the effectiveness of oral rabies vaccination in field conditions.
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Determination of critical factors causing cytotoxicity in the virus neutralization test. J Virol Methods 2014; 199:46-52. [PMID: 24462972 DOI: 10.1016/j.jviromet.2014.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 01/03/2014] [Accepted: 01/09/2014] [Indexed: 11/21/2022]
Abstract
The fluorescent antibody virus neutralization (FAVN) test, an international standard method for serological testing for rabies, has been adopted by many countries. However, some dog serum samples inhibit the formation of cell monolayers by BHK-21 cells used in the test, resulting in failures to determine antibody titers. This inhibition of cell monolayer formation was defined as cytotoxicity. In this study, critical factors that induce cytotoxicity of the dog serum in BHK-21 cells were determined, and the effective ways to prevent cytotoxicity were also established. Specifically, some anticoagulants, anti-BHK-21 cell IgG antibodies, and serum storage at temperatures of >25°C were found to induce cytotoxicity. On the other hand, several treatments of the dog serum, including the absorption by BHK-21 cells or kaolin, incubation with trypsin-EDTA, and the use of collagen- or gelatin-coated plates, were shown to reduce cytotoxicity. Based on these results, the FAVN test may be modified to enhance its performance.
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