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Cruz JL, Garcia AM, Saito N, Lagayan MGO, Dela Peña RC, Usana MS, Agustin SP, Tattao JZ, Mamauag CV, Ducayag OP, Nabus HLF, Flores PDDL, Fabon RJA, Peñaflor RP, Viñas DCG, Limsan CA, Bernales RP, Llames MET, Balopeños LE, Morales RG, Migriño AMCV, Calunsag OJS, Datoy JJ, Palma KY, Sepulveda MCB, Eng MNJ, Moscoso JS, Julabar SMF, Mauhay JD, Espino MJM, Javier CJM, Kimitsuki K, Nishizono A. Evaluation of lateral flow devices for postmortem rabies diagnosis in animals in the Philippines: a multicenter study. J Clin Microbiol 2023; 61:e0084223. [PMID: 37991352 PMCID: PMC10729751 DOI: 10.1128/jcm.00842-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 10/07/2023] [Indexed: 11/23/2023] Open
Abstract
Expansion of the use of lateral flow devices (LFD) for animal rabies diagnosis can help mitigate the widespread underreporting of rabies. However, this has been hindered by the limited number and small sample size of previous studies. To overcome this limitation, we conducted a multicenter study with a larger sample size to assess the diagnostic accuracy of the ADTEC LFD for postmortem rabies diagnosis in animals. Thirteen governmental animal diagnostic laboratories in the Philippines were involved in this study, and 791 animals suspected of having rabies were tested using both the direct fluorescence antibody test (DFAT) and ADTEC LFD between August 2021 and October 2022. The LFD demonstrated a sensitivity of 96.3% [95% confidence interval (CI): 94.1%-97.9%] and a specificity of 99.7% (95% CI: 98.4%-100%). Notably, false-negative results were more likely to occur in laboratories with lower annual processing volumes of rabies samples in the previous years (adjusted odds ratio 4.97, 95% CI: 1.49-16.53). In this multicenter study, the high sensitivity and specificity of the LFD for the diagnosis of animal rabies, compared to that of the DFAT, was demonstrated, yet concerns regarding false-negative results remain. In areas with limited experience in processing rabies samples, it is essential to provide comprehensive training and careful attention during implementation.
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Affiliation(s)
- Jeffrey L. Cruz
- Department of Agriculture, Bureau of Animal Industry, Quezon, Philippines
| | - Alyssa M. Garcia
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Nobuo Saito
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | | | | | - Michael S. Usana
- Regional Animal Disease Diagnostic Laboratory I, Sta Barbara, Pangasinan, Philippines
| | | | - Judith Z. Tattao
- Regional Animal Disease Diagnostic Laboratory II, Tuguegarao, Cagayan, Philippines
| | - Christine V. Mamauag
- Regional Animal Disease Diagnostic Laboratory II, Tuguegarao, Cagayan, Philippines
| | - Ofelia P. Ducayag
- Regional Animal Disease Diagnostic Laboratory CAR, Baguio, Benguet, Philippines
| | | | | | | | - Rogelio P. Peñaflor
- Regional Animal Disease Diagnostic Laboratory IVB, Naujan, Oriental Mindoro, Philippines
| | | | - Carla A. Limsan
- Regional Animal Disease Diagnostic Laboratory IVB - Satellite Laboratory, Puerto Princesa, Palawan, Philippines
| | - Rona P. Bernales
- Regional Animal Disease Diagnostic Laboratory V, Pili, Camarines Sur, Philippines
| | | | | | - Ramir G. Morales
- Regional Animal Disease Diagnostic Laboratory VI, Iloilo, Philippines
| | | | | | - Josephine J. Datoy
- Regional Animal Disease Diagnostic Laboratory IX, Zamboanga, Zamboanga del Sur, Philippines
| | - Ken Y. Palma
- Regional Animal Disease Diagnostic Laboratory IX, Zamboanga, Zamboanga del Sur, Philippines
| | | | - Ma Noreen J. Eng
- Davao City Animal Disease Diagnostic Laboratory, Davao, Davao del Sur, Philippines
| | - Jobienaur S. Moscoso
- Regional Animal Disease Diagnostic Laboratory XII, General Santos, South Cotabato, Philippines
| | - Sheena Mae F. Julabar
- Regional Animal Disease Diagnostic Laboratory XII, General Santos, South Cotabato, Philippines
| | - Jaira D. Mauhay
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | | | | | - Kazunori Kimitsuki
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Akira Nishizono
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
- Research Center for Global and Local Infectious Diseases, Oita University, Yufu, Oita, Japan
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Evaluation of a real-time mobile PCR device (PCR 1100) for the detection of the rabies gene in field samples. Trop Med Health 2023; 51:17. [PMID: 36932428 PMCID: PMC10020757 DOI: 10.1186/s41182-023-00501-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/23/2023] [Indexed: 03/19/2023] Open
Abstract
BACKGROUND The Philippines is ranked among the top countries with 200-300 annual deaths due to rabies. Most human rabies cases have been reported in remote areas, where dog surveillance is inadequate. Therefore, a strategy to effectively improve surveillance in remote areas will increase the number of detections. Detecting pathogens using portable real-time reverse transcription-polymerase chain reaction (RT-PCR) has the potential to be accepted in these areas. Thus, we aimed to develop an assay to detect the rabies virus (RABV) genome by combining the robust primer system LN34 with the PicoGene PCR1100 portable rapid instrument targeting RABV RNA (PCR1100 assay). METHODS Procedures were optimised using an LN34 primer/probe set, KAPA3G Plant PCR Kit (KAPA Biosystems), FastGene Scriptase II (NIPPON Genetics), and an artificial positive control RNA. RESULTS Positive control RNA showed an analytical limit of detection of 10 copies/µL without false positivity, generating results in approximately 32 min. Compared to dFAT or RT-qPCR using field samples, the sensitivity and specificity of the PCR1100 assay were 100%, and even lower copy numbers (approximately 10 copies/µL) were detected. CONCLUSIONS This study demonstrated that the developed assay can detect rabies RNA in field samples. Because dog-mediated rabies is endemic in remote areas, the rapidity, mobility, and practicality of the PCR1100 assay as well as the high sensitivity of the LN34 system make it an ideal tool for the confirmation of rabies in these areas.
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Kimitsuki K, Saito N, Yamada K, Park CH, Inoue S, Suzuki M, Saito-Obata M, Kamiya Y, Manalo DL, Demetria CS, Mananggit MR, Quiambao BP, Nishizono A. Evaluation of the diagnostic accuracy of lateral flow devices as a tool to diagnose rabies in post-mortem animals. PLoS Negl Trop Dis 2020; 14:e0008844. [PMID: 33151941 PMCID: PMC7671516 DOI: 10.1371/journal.pntd.0008844] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/17/2020] [Accepted: 09/28/2020] [Indexed: 11/19/2022] Open
Abstract
Implementation of lateral flow devices (LFDs) for rabies antigen detection is expected to improve surveillance through the efficient detection of rabid animals in resource-limited settings; however, the use of LFDs for diagnosis remains controversial because some commercially available kits show low sensitivity. Therefore, we compared the diagnostic efficacy of three LFDs (ADTEC, Bionote, and Elabscience kits) paralleled with the direct fluorescent antibody test (dFAT) using fresh samples and investigated the diagnostic accuracies. To do so, we evaluated rabies-suspected samples submitted to the Regional Animal Disease Diagnostic Laboratory III, Philippines. Furthermore, we conducted real-time RT-PCR and sequencing to measure the accuracy of field laboratory diagnosis. The total number of animals submitted during this study period was 184 cases, including negative control samples. Of these, 53.9% (84 cases) were positive in the dFAT. Dogs were the most common rabies-suspected animal (n = 135). The sensitivities of the ADTEC and Bionote kits were 0.88 (74 cases) and 0.95 (80 cases), respectively. The specificity of both kits was 1.00 (100 cases). Furthermore, the sensitivity and specificity of the ADTEC kit after directly homogenizing the samples in assay buffer without dilution in phosphate-buffered saline (ADTEC kit DM) were 0.94 (79 cases) and 1.00 (100 cases), respectively. By contrast, there were no positive results using the Elabscience kit among all dFAT-positive samples. The sensitivity and specificity of LFDs make these tests highly feasible if properly used. Therefore, LFD tests can be used to strengthen the surveillance of rabies-infected animals in endemic and resource-limited settings.
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Affiliation(s)
- Kazunori Kimitsuki
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Nobuo Saito
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
| | - Kentaro Yamada
- Laboratory of Veterinary Public Health, Department of Veterinary Medical Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Miyazaki, Japan
| | - Chun-Ho Park
- Department of Veterinary Pathology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Satoshi Inoue
- National Institute of Infectious Disease, Tokyo, Japan
| | - Motoi Suzuki
- National Institute of Infectious Disease, Tokyo, Japan
| | | | - Yasuhiko Kamiya
- School of Tropical Medicine & Global Health, Nagasaki University, Nagasaki, Nagasaki, Japan
| | - Daria L. Manalo
- Research Institute for Tropical Medicine, Muntinlupa City, Metro Manila, Philippines
| | - Catalino S. Demetria
- Research Institute for Tropical Medicine, Muntinlupa City, Metro Manila, Philippines
| | - Milagros R. Mananggit
- Regional Animal Disease Diagnostic Laboratory, Department of Agriculture Field Office III, San Fernando, Pampanga, Philippines
| | - Beatriz P. Quiambao
- Research Institute for Tropical Medicine, Muntinlupa City, Metro Manila, Philippines
| | - Akira Nishizono
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Oita, Japan
- * E-mail:
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Tenzin T, Lhamo K, Rai PB, Tshering D, Jamtsho P, Namgyal J, Wangdi T, Letho S, Rai T, Jamtsho S, Dorji C, Rinchen S, Lungten L, Wangmo K, Lungten L, Wangchuk P, Gempo T, Jigme K, Phuntshok K, Tenzinla T, Gurung RB, Dukpa K. Evaluation of a rapid immunochromatographic test kit to the gold standard fluorescent antibody test for diagnosis of rabies in animals in Bhutan. BMC Vet Res 2020; 16:183. [PMID: 32513172 PMCID: PMC7281917 DOI: 10.1186/s12917-020-02405-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 06/02/2020] [Indexed: 11/12/2022] Open
Abstract
Background Rabies kills approximately 59,000 people each year worldwide. Rapid and accurate diagnosis of rabies is important for instituting rapid containment measures and for advising the exposed people for postexposure treatment. The application of a rapid diagnostic tests in the field can greatly enhance disease surveillance and diagnostic activities, especially in resource poor settings. In this study, a total of 179 brain tissue samples collected from different rabies suspect animal species (113 dogs, 50 cattle, 10 cats, 3 goats, 2 horses, and 1 bear) were selected and tested using both rapid immunochromatographic kit and the reference standard fluorescent antibody test (FAT). We evaluated the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of a rapid antigen detection test kit produced by BioNote, Inc. (Hwaseong-si, Korea) relative to a FAT for its fit-for-purpose for confirmation of clinical cases of rabies for early response and enhancing rabies surveillance. Results Among 179 samples examined in this study, there was a concordance in results by the rapid test and FAT in 115 positive samples and 54 negative samples. Test results were discordant in 10 samples which were positive by FAT, but negative (false negative) by rapid kit. The rapid test kit showed a sensitivity of 92% (95% CI: 85.9–95.6) and specificity of 100% (95% CI: 93.4–100) using FAT as the reference standard. The positive and negative predictive values were found to be 100% (95% CI:96.7–100) and 84.4% (95% CI: 73.6–91.3), respectively. Overall, there was 94.4% (95% CI: 90–96.9) test agreement between rapid test and FAT (Kappa value = 0.874) with a positive percent agreement and negative percent agreement of 92 and 100%, respectively. Conclusions Our finding demonstrated that the rapid test kit (BioNote) can be used for rabies surveillance and confirming clinical case of rabies in animals for making rapid decisions particularly controlling rabies outbreaks in resource poor settings.
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Affiliation(s)
- Tenzin Tenzin
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan.
| | - Kelzang Lhamo
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
| | - Purna B Rai
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
| | - Dawa Tshering
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
| | - Pema Jamtsho
- District Veterinary Hospital, Trashigang, Bhutan
| | | | - Thrinang Wangdi
- Regional Livestock Development Centre, Kanglung, Trashigang, Bhutan
| | - Sangay Letho
- Regional Livestock Development Centre, Kanglung, Trashigang, Bhutan
| | - Tuku Rai
- City Veterinary Hospital and Satellite Veterinary Laboratory, Phuentsholing, Bhutan
| | - Sonam Jamtsho
- City Veterinary Hospital and Satellite Veterinary Laboratory, Phuentsholing, Bhutan
| | - Chendu Dorji
- Regional Livestock Development Centre, Tshimasham, Chukha, Bhutan
| | - Sangay Rinchen
- Regional Livestock Development Centre, Tshimasham, Chukha, Bhutan
| | - Lungten Lungten
- Satellite Veterinary Laboratory, Deothang, Samdrup Jongkhar, Bhutan
| | | | | | - Pema Wangchuk
- Regional Livestock Development Centre, Zhemgang, Bhutan
| | - Tshewang Gempo
- Satellite Veterinary Laboratory, Gelephu, Sarpang, Bhutan
| | - Kezang Jigme
- Satellite Veterinary Laboratory, Gelephu, Sarpang, Bhutan
| | | | - Tenzinla Tenzinla
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
| | - Ratna B Gurung
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
| | - Kinzang Dukpa
- Department of Livestock, National Centre for Animal Health, Serbithang, Thimphu, Bhutan
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5
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Yale G, Gibson AD, Mani RS, P K H, Costa NC, Corfmat J, Otter I, Otter N, Handel IG, Bronsvoort BM, Mellanby RJ, Desai S, Naik V, Gamble L, Mazeri S. Evaluation of an Immunochromatographic Assay as a Canine Rabies Surveillance Tool in Goa, India. Viruses 2019; 11:E649. [PMID: 31311178 PMCID: PMC6669590 DOI: 10.3390/v11070649] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/05/2019] [Accepted: 07/08/2019] [Indexed: 11/16/2022] Open
Abstract
Rabies is a fatal zoonotic disease transmitted by the bite of a rabid animal. More than 95% of the human rabies cases in India are attributed to exposure to rabid dogs. This study evaluated the utility of a lateral flow immunochromatographic assay (LFA) (Anigen Rapid Rabies Ag Test Kit, Bionote, Hwaseong-si, Korea) for rapid post mortem diagnosis of rabies in dogs. Brain tissue was collected from 202 animals that were screened through the Government of Goa rabies surveillance system. The brain tissue samples were obtained from 188 dogs, nine cats, three bovines, one jackal and one monkey. In addition, 10 dogs that died due to trauma from road accidents were included as negative controls for the study. The diagnostic performance of LFA was evaluated using results from direct fluorescence antibody test (dFT); the current gold standard post mortem test for rabies infection. Three samples were removed from the analysis as they were autolysed and not fit for testing by dFT. Of the 209 samples tested, 117 tested positive by LFA and 92 tested negative, while 121 tested positive by dFT and 88 tested negative. Estimates of LFA sensitivity and specificity were 0.96 (95% CI 0.91-0.99) and 0.99 (95% CI 0.94-1.00), respectively. The LFA is a simple and low-cost assay that aids in the rapid diagnosis of rabies in the field without the need for expensive laboratory equipment or technical expertise. This study found that Bionote LFA has potential as a screening tool in rabies endemic countries.
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Affiliation(s)
- Gowri Yale
- Mission Rabies, Tonca, Panjim, Goa 403002, India.
| | - Andrew D Gibson
- The Roslin Institute and The Royal (Dick) School of Veterinary Studies, Division of Genetics and Genomics, The University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG, UK
- Mission Rabies, Cranborne, Dorset BH21 5PZ, UK
| | - Reeta S Mani
- National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore 560029, India
| | - Harsha P K
- National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore 560029, India
| | - Niceta Cunha Costa
- Directorate of Animal Health and Veterinary Services, Patto, Panjim, Goa 403001, India
| | | | - Ilona Otter
- Worldwide Veterinary Service, Hicks ITC, Goa 403507, India
| | - Nigel Otter
- Worldwide Veterinary Service, Hicks ITC, Goa 403507, India
| | - Ian G Handel
- The Roslin Institute and The Royal (Dick) School of Veterinary Studies, Division of Genetics and Genomics, The University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG, UK
| | - Barend Mark Bronsvoort
- The Roslin Institute and The Royal (Dick) School of Veterinary Studies, Division of Genetics and Genomics, The University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG, UK
| | - Richard J Mellanby
- The Royal (Dick) School of Veterinary Studies, Division of Veterinary Clinical Studies, The University of Edinburgh, Hospital for Small Animals, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG, UK
| | - Santosh Desai
- Directorate of Animal Health and Veterinary Services, Patto, Panjim, Goa 403001, India
| | - Vilas Naik
- Directorate of Animal Health and Veterinary Services, Patto, Panjim, Goa 403001, India
| | - Luke Gamble
- Mission Rabies, Cranborne, Dorset BH21 5PZ, UK
| | - Stella Mazeri
- The Roslin Institute and The Royal (Dick) School of Veterinary Studies, Division of Genetics and Genomics, The University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Midlothian EH25 9RG, UK
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Cleaveland S, Hampson K. Rabies elimination research: juxtaposing optimism, pragmatism and realism. Proc Biol Sci 2018; 284:rspb.2017.1880. [PMID: 29263285 PMCID: PMC5745407 DOI: 10.1098/rspb.2017.1880] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Accepted: 11/27/2017] [Indexed: 12/17/2022] Open
Abstract
More than 100 years of research has now been conducted into the prevention, control and elimination of rabies with safe and highly efficacious vaccines developed for use in human and animal populations. Domestic dogs are a major reservoir for rabies, and although considerable advances have been made towards the elimination and control of canine rabies in many parts of the world, the disease continues to kill tens of thousands of people every year in Africa and Asia. Policy efforts are now being directed towards a global target of zero human deaths from dog-mediated rabies by 2030 and the global elimination of canine rabies. Here we demonstrate how research provides a cause for optimism as to the feasibility of these goals through strategies based around mass dog vaccination. We summarize some of the pragmatic insights generated from rabies epidemiology and dog ecology research that can improve the design of dog vaccination strategies in low- and middle-income countries and which should encourage implementation without further delay. We also highlight the need for realism in reaching the feasible, although technically more difficult and longer-term goal of global elimination of canine rabies. Finally, we discuss how research on rabies has broader relevance to the control and elimination of a suite of diseases of current concern to human and animal health, providing an exemplar of the value of a ‘One Health’ approach.
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Affiliation(s)
- Sarah Cleaveland
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Katie Hampson
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
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7
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Prabhu KN, Isloor S, Veeresh BH, Rathnamma D, Sharada R, Das LJ, Satyanarayana ML, Hegde NR, Rahman SA. Application and Comparative Evaluation of Fluorescent Antibody, Immunohistochemistry and Reverse Transcription Polymerase Chain Reaction Tests for the Detection of Rabies Virus Antigen or Nucleic Acid in Brain Samples of Animals Suspected of Rabies in India. Vet Sci 2018; 5:E24. [PMID: 29495649 PMCID: PMC5876580 DOI: 10.3390/vetsci5010024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/19/2018] [Accepted: 02/23/2018] [Indexed: 10/25/2022] Open
Abstract
Accurate and early diagnosis of animal rabies is critical for undertaking public health measures. Whereas the direct fluorescent antibody (DFA) technique is the recommended test, the more convenient, direct rapid immunochemistry test (dRIT), as well as the more sensitive, reverse transcription polymerase chain reaction (RT-PCR), have recently been employed for the laboratory diagnosis of rabies. We compared the three methods on brain samples from domestic (dog, cat, cattle, buffalo, horse, pig and goat) and wild (leopard, wolf and jackal) animals from various parts of India. Of the 257 samples tested, 167 were positive by all the three tests; in addition, 35 of the 36 decomposed samples were positive by RT-PCR. This is the first study in which such large number of animal samples have been subjected to the three tests simultaneously. The results confirm 100% corroboration between DFA and dRIT, buttress the applicability of dRIT in the simple and rapid diagnosis of rabies in animals, and reaffirm the suitability of RT-PCR for samples unfit for testing either by DFA or dRIT.
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Affiliation(s)
- K Nithin Prabhu
- Commonwealth Veterinary Association-Crucell Rabies Diagnostic Laboratory, Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - Shrikrishna Isloor
- Commonwealth Veterinary Association-Crucell Rabies Diagnostic Laboratory, Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - B Hanchinal Veeresh
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - Doddamane Rathnamma
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - R Sharada
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - Lekshmi J Das
- Department of Microbiology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - M L Satyanarayana
- Department of Pathology, Veterinary College-Bengaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bengaluru 560024, India.
| | - Nagendra R Hegde
- National Institute of Animal Biotechnology, Miyapur, Hyderabad 500049, India.
| | - Sira Abdul Rahman
- Commonwealth Veterinary Association, Jayanagar, Bengaluru 560011, India.
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8
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Singh R, Singh KP, Cherian S, Saminathan M, Kapoor S, Manjunatha Reddy GB, Panda S, Dhama K. Rabies - epidemiology, pathogenesis, public health concerns and advances in diagnosis and control: a comprehensive review. Vet Q 2017. [PMID: 28643547 DOI: 10.1080/01652176.2017.1343516] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Rabies is a zoonotic, fatal and progressive neurological infection caused by rabies virus of the genus Lyssavirus and family Rhabdoviridae. It affects all warm-blooded animals and the disease is prevalent throughout the world and endemic in many countries except in Islands like Australia and Antarctica. Over 60,000 peoples die every year due to rabies, while approximately 15 million people receive rabies post-exposure prophylaxis (PEP) annually. Bite of rabid animals and saliva of infected host are mainly responsible for transmission and wildlife like raccoons, skunks, bats and foxes are main reservoirs for rabies. The incubation period is highly variable from 2 weeks to 6 years (avg. 2-3 months). Though severe neurologic signs and fatal outcome, neuropathological lesions are relatively mild. Rabies virus exploits various mechanisms to evade the host immune responses. Being a major zoonosis, precise and rapid diagnosis is important for early treatment and effective prevention and control measures. Traditional rapid Seller's staining and histopathological methods are still in use for diagnosis of rabies. Direct immunofluoroscent test (dFAT) is gold standard test and most commonly recommended for diagnosis of rabies in fresh brain tissues of dogs by both OIE and WHO. Mouse inoculation test (MIT) and polymerase chain reaction (PCR) are superior and used for routine diagnosis. Vaccination with live attenuated or inactivated viruses, DNA and recombinant vaccines can be done in endemic areas. This review describes in detail about epidemiology, transmission, pathogenesis, advances in diagnosis, vaccination and therapeutic approaches along with appropriate prevention and control strategies.
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Affiliation(s)
- Rajendra Singh
- a Division of Pathology , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
| | - Karam Pal Singh
- b Centre for Animal Disease Research and Diagnosis (CADRAD) , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
| | - Susan Cherian
- a Division of Pathology , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
| | - Mani Saminathan
- a Division of Pathology , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
| | - Sanjay Kapoor
- c Department of Veterinary Microbiology , LLR University of Veterinary and Animal Sciences , Hisar , Haryana , India
| | - G B Manjunatha Reddy
- d ICAR-National Institute of Veterinary Epidemiology and Disease Informatics , Bengaluru , Karnataka , India
| | - Shibani Panda
- a Division of Pathology , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
| | - Kuldeep Dhama
- a Division of Pathology , ICAR-Indian Veterinary Research Institute , Bareilly , Uttar Pradesh , India
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9
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McKenzie JS, Dahal R, Kakkar M, Debnath N, Rahman M, Dorjee S, Naeem K, Wijayathilaka T, Sharma BK, Maidanwal N, Halimi A, Kim E, Chatterjee P, Devleesschauwer B. One Health research and training and government support for One Health in South Asia. Infect Ecol Epidemiol 2016; 6:33842. [PMID: 27906123 PMCID: PMC5131453 DOI: 10.3402/iee.v6.33842] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 12/14/2022] Open
Abstract
Introduction Considerable advocacy, funding, training, and technical support have been provided to South Asian countries to strengthen One Health (OH) collaborative approaches for controlling diseases with global human pandemic potential since the early 2000s. It is essential that the OH approach continues to be strengthened given South Asia is a hot spot for emerging and endemic zoonotic diseases. The objectives of this article are to describe OH research and training and capacity building activities and the important developments in government support for OH in these countries to identify current achievements and gaps. Materials and methods A landscape analysis of OH research, training, and government support in South Asia was generated by searching peer-reviewed and grey literature for OH research publications and reports, a questionnaire survey of people potentially engaged in OH research in South Asia and the authors’ professional networks. Results Only a small proportion of zoonotic disease research conducted in South Asia can be described as truly OH, with a significant lack of OH policy-relevant research. A small number of multisectoral OH research and OH capacity building programmes were conducted in the region. The governments of Bangladesh and Bhutan have established operational OH strategies, with variable progress institutionalising OH in other countries. Identified gaps were a lack of useful scientific information and of a collaborative culture for formulating and implementing integrated zoonotic disease control policies and the need for ongoing support for transdisciplinary OH research and policy-relevant capacity building programmes. Discussion Overall we found a very small number of truly OH research and capacity building programmes in South Asia. Even though significant progress has been made in institutionalising OH in some South Asian countries, further behavioural, attitudinal, and institutional changes are required to strengthen OH research and training and implementation of sustainably effective integrated zoonotic disease control policies.
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Affiliation(s)
- Joanna S McKenzie
- International Development Group, Institute of Veterinary Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand;
| | | | | | - Nitish Debnath
- United Nations Food and Agriculture Organisation, Dhaka, Bangladesh
| | - Mahmudur Rahman
- Institute of Epidemiology Disease Control and Research, Directorate General of Health Services, Ministry of Health and Family Welfare, Government of the People's Republic of Bangladesh, Dhaka, Bangladesh
| | - Sithar Dorjee
- Bhutan Agriculture and Food Regulation Authority, Thimpu, Bhutan
| | - Khalid Naeem
- Animal Sciences Institute, Pakistan Agriculture Research Centre, Islamabad, Pakistan
| | | | | | | | | | - Eunmi Kim
- International Development Group, Institute of Veterinary Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | | | - Brecht Devleesschauwer
- Department of Public Health and Surveillance, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
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Léchenne M, Naïssengar K, Lepelletier A, Alfaroukh IO, Bourhy H, Zinsstag J, Dacheux L. Validation of a Rapid Rabies Diagnostic Tool for Field Surveillance in Developing Countries. PLoS Negl Trop Dis 2016; 10:e0005010. [PMID: 27706156 PMCID: PMC5051951 DOI: 10.1371/journal.pntd.0005010] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 08/29/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND One root cause of the neglect of rabies is the lack of adequate diagnostic tests in the context of low income countries. A rapid, performance friendly and low cost method to detect rabies virus (RABV) in brain samples will contribute positively to surveillance and consequently to accurate data reporting, which is presently missing in the majority of rabies endemic countries. METHODOLOGY/PRINCIPAL FINDINGS We evaluated a rapid immunodiagnostic test (RIDT) in comparison with the standard fluorescent antibody test (FAT) and confirmed the detection of the viral RNA by real time reverse transcription polymerase chain reaction (RT-qPCR). Our analysis is a multicentre approach to validate the performance of the RIDT in both a field laboratory (N'Djamena, Chad) and an international reference laboratory (Institut Pasteur, Paris, France). In the field laboratory, 48 samples from dogs were tested and in the reference laboratory setting, a total of 73 samples was tested, representing a wide diversity of RABV in terms of animal species tested (13 different species), geographical origin of isolates with special emphasis on Africa, and different phylogenetic clades. Under reference laboratory conditions, specificity was 93.3% and sensitivity was 95.3% compared to the gold standard FAT test. Under field laboratory conditions, the RIDT yielded a higher reliability than the FAT test particularly on fresh and decomposed samples. Viral RNA was later extracted directly from the test filter paper and further used successfully for sequencing and genotyping. CONCLUSION/SIGNIFICANCE The RIDT shows excellent performance qualities both in regard to user friendliness and reliability of the result. In addition, the test cassettes can be used as a vehicle to ship viral RNA to reference laboratories for further laboratory confirmation of the diagnosis and for epidemiological investigations using nucleotide sequencing. The potential for satisfactory use in remote locations is therefore very high to improve the global knowledge of rabies epidemiology. However, we suggest some changes to the protocol, as well as careful further validation, before promotion and wider use.
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Affiliation(s)
- Monique Léchenne
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | | | - Anthony Lepelletier
- Institut Pasteur, Unit Lyssavirus Dynamics and Host Adaptation, National Reference Center for Rabies and WHO Collaborating Centre for Reference and Research on Rabies, Paris, France
| | | | - Hervé Bourhy
- Institut Pasteur, Unit Lyssavirus Dynamics and Host Adaptation, National Reference Center for Rabies and WHO Collaborating Centre for Reference and Research on Rabies, Paris, France
| | - Jakob Zinsstag
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Laurent Dacheux
- Institut Pasteur, Unit Lyssavirus Dynamics and Host Adaptation, National Reference Center for Rabies and WHO Collaborating Centre for Reference and Research on Rabies, Paris, France
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11
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Sharma P, Singh CK, Narang D. Comparison of immunochromatographic diagnostic test with Hheminested Reverse transcriptase polymerase chain reaction for detection of rabies virus from brain samples of various species. Vet World 2015; 8:135-8. [PMID: 27047061 PMCID: PMC4774692 DOI: 10.14202/vetworld.2015.135-138] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 12/20/2014] [Accepted: 12/30/2014] [Indexed: 10/29/2022] Open
Abstract
AIM Detection of rabies is a cause of serious concern in developing countries, where dearth of highly equipped laboratories and trained personnel to handle sophisticated investigations is felt. The availability of a diagnostic kit, which can be used in the field, is essential for diagnosis and control programs as well as for epidemiological surveillance of the prevalence of the disease. This study was planned to evaluate anigen rabies Ag test kit for its efficacy to be used for rapid diagnosis of rabies under field conditions. The test results were compared with hemi-nested reverse transcriptase polymerase chain reaction and with a gold standard fluorescent antibody test. MATERIALS AND METHODS A total of 34 brain samples from different rabies suspected animals including dogs, buffaloes, cow, horse, and cat were examined in this study. RESULTS Sensitivity of the kit was found to be 91.66%, specificity 100%, and accuracy was 94.11%. CONCLUSION The study implies that the immunochromatographic diagnostic test kit may be employed for diagnosis of rabies in field conditions.
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Affiliation(s)
- Pranoti Sharma
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 141 004, Punjab, India
| | - C K Singh
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 141 004, Punjab, India
| | - Deepti Narang
- Department of Veterinary Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana - 141 004, Punjab, India
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12
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Twelve years of rabies surveillance in Sri Lanka, 1999-2010. PLoS Negl Trop Dis 2014; 8:e3205. [PMID: 25299511 PMCID: PMC4191952 DOI: 10.1371/journal.pntd.0003205] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 08/20/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Rabies is endemic in Sri Lanka, but little is known about the temporal and spatial trends of rabies in this country. Knowing these trends may provide insight into past control efforts and serve as the basis for future control measures. In this study, we analyzed distribution of rabies in humans and animals over a period of 12 years in Sri Lanka. METHODS Accumulated data from 1999 through 2010 compiled by the Department of Rabies Diagnosis and Research, Medical Research Institute (MRI), Colombo, were used in this study. RESULTS The yearly mean percentage of rabies-positive sample was 62.4% (47.6-75.9%). Three-fourths of the rabies-positive samples were from the Colombo, Gampaha, and Kalutara districts in Western province, followed by Galle in Southern province. A high percentage of the rabies samples were from dogs (85.2%), followed by cats (7.9%), humans (3.8%), wild animals (2.0%), and livestock (1.1%). Among wild animals, mongooses were the main victims followed by civets. The number of suspect human rabies cases decreased gradually in Sri Lanka, although the number of human samples submitted for laboratory confirmation increased. CONCLUSIONS The number of rabid dogs has remained relatively unchanged, but the number of suspect human rabies is decreasing gradually in Sri Lanka. These findings indicate successful use of postexposure prophylaxis (PEP) by animal bite victims and increased rabies awareness. PEP is free of charge and is supplied through government hospitals by the Ministry of Health, Sri Lanka. Our survey shows that most positive samples were received from Western and Southern provinces, possibly because of the ease of transporting samples to the laboratory. Submissions of wild animal and livestock samples should be increased by creating more awareness among the public. Better rabies surveillance will require introduction of molecular methods for detection and the establishment of more regional rabies diagnostic laboratories.
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13
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Hung DZ, Lin JH, Mo JF, Huang CF, Liau MY. Rapid diagnosis of Naja atra snakebites. Clin Toxicol (Phila) 2014; 52:187-91. [PMID: 24580058 DOI: 10.3109/15563650.2014.887725] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The clinical diagnosis of snakebites is critical and necessary in many parts of the world, especially in Southeastern Asia, where venomous snakebites are a burden on public health. It is difficult to define or recognize the species of venomous snake because of the overlapping clinical manifestations of envenomations. A quick and reliable method for identifying the snake species is necessary. We designed and tested a strip of lateral flow system for the diagnosis of cobra snake bites in Taiwan. METHODS We developed a kit based on an immunochromatographic method for rapid detection of cobra (Naja atra) venom in human serum. The test and control lines composed of 1 mg/ml polyclonal duck antivenom and 0.5 mg/ml goat anti-rabbit immunoglobulin antibody solutions, respectively, were coated on nitrocellulose strips. Colloidal gold was conjugated with rabbit polyclonal anti-cobra venom antibodies. From July 2007 to December 2012, we used the kit to test serum from snakebite patients and to examine the agreement between our rapid test and the currently used sandwich enzyme-linked immunosorbent assay (ELISA). RESULTS Our kit was able to detect cobra venom in serum samples in 20 minutes with a detection limit of 5 ng/ml. An absence of cross-reactivity with other non-cobra venoms from Taiwan was noted in vitro. A total of 88 snakebite patients (34 cobra and 54 other non-cobra) were tested. The sensitivity of the strips based on the ELISA results was 83.3% and the specificity was 100%. There was a strong agreement between the results of the ELISA and immunochromatographic strips (κ = 0.868). DISCUSSION AND CONCLUSIONS This data indicates that an immunochromatographic strip might be suitable for cobra venom detection and could be used as a quick diagnostic tool in cases of N. atra snakebite.
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Affiliation(s)
- D Z Hung
- Division of Toxicology, China Medical University Hospital , Taichung , Taiwan
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Mani RS, Madhusudana SN. Laboratory diagnosis of human rabies: recent advances. ScientificWorldJournal 2013; 2013:569712. [PMID: 24348170 PMCID: PMC3848253 DOI: 10.1155/2013/569712] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 09/26/2013] [Indexed: 12/25/2022] Open
Abstract
Rabies, an acute progressive, fatal encephalomyelitis, transmitted most commonly through the bite of a rabid animal, is responsible for an estimated 61,000 human deaths worldwide. The true disease burden and public health impact due to rabies remain underestimated due to lack of sensitive laboratory diagnostic methods. Rapid diagnosis of rabies can help initiate prompt infection control and public health measures, obviate the need for unnecessary treatment/medical tests, and assist in timely administration of pre- or postexposure prophylactic vaccination to family members and medical staff. Antemortem diagnosis of human rabies provides an impetus for clinicians to attempt experimental therapeutic approaches in some patients, especially after the reported survival of a few cases of human rabies. Traditional methods for antemortem and postmortem rabies diagnosis have several limitations. Recent advances in technology have led to the improvement or development of several diagnostic assays which include methods for rabies viral antigen and antibody detection and assays for viral nucleic acid detection and identification of specific biomarkers. These assays which complement traditional methods have the potential to revolutionize rabies diagnosis in future.
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Affiliation(s)
- Reeta Subramaniam Mani
- Department of Neurovirology, WHO Collaborating Centre for Reference and Research on Rabies, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore 560029, India
| | - Shampur Narayan Madhusudana
- Department of Neurovirology, WHO Collaborating Centre for Reference and Research on Rabies, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore 560029, India
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Matsumoto T, Ahmed K, Karunanayake D, Wimalaratne O, Nanayakkara S, Perera D, Kobayashi Y, Nishizono A. Molecular epidemiology of human rabies viruses in Sri Lanka. INFECTION GENETICS AND EVOLUTION 2013; 18:160-7. [PMID: 23722023 DOI: 10.1016/j.meegid.2013.05.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/17/2013] [Accepted: 05/19/2013] [Indexed: 12/25/2022]
Abstract
Rabies is a lethal zoonotic disease caused by the rabies virus, which is transmitted by rabid animals to humans. Rabies is prevalent in all continents, with over 60% of human deaths occurring in Asia. Sri Lanka is a rabies-endemic country. This study shows that rabies afflicted more older individuals than children in Sri Lanka between 2008 and 2010. This novel finding indicates that older people in Sri Lanka should be more aware of the risk of rabies. Phylogenetic analyses of the rabies N and G genes showed that the Sri Lankan rabies viruses are distinct and probably originated from a single clone. The G-L noncoding region is highly diverse, and is suitable for the analysis of virus evolution within a country. A phylogenetic analysis of this region showed high diversity in the currently circulating Sri Lankan rabies viruses, which can be divided into seven clades. Some clades are unique to a specific geographic region, whereas others occur at multiple locations. This indicates that the movement of dogs, the main rabies-transmitting animal in Sri Lanka, is restricted in some areas but less limited in others. These data may help to formulate a more efficient rabies control program in Sri Lanka.
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Affiliation(s)
- Takashi Matsumoto
- Department of Microbiology, Faculty of Medicine, Oita University, Yufu, Japan
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Silva SR, Katz ISS, Mori E, Carnieli P, Vieira LFP, Batista HBCR, Chaves LB, Scheffer KC. Biotechnology advances: a perspective on the diagnosis and research of Rabies Virus. Biologicals 2013; 41:217-23. [PMID: 23683880 DOI: 10.1016/j.biologicals.2013.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 04/05/2013] [Accepted: 04/06/2013] [Indexed: 11/15/2022] Open
Abstract
Rabies is a widespread zoonotic disease responsible for approximately 55,000 human deaths/year. The direct fluorescent antibody test (DFAT) and the mouse inoculation test (MIT) used for rabies diagnosis, have high sensitivity and specificity, but are expensive and time-consuming. These disadvantages and the identification of new strains of the virus encourage the use of new techniques that are rapid, sensitive, specific and economical for the detection and research of the Rabies Virus (RABV). Real-time RT-PCR, phylogeographic analysis, proteomic assays and DNA recombinant technology have been used in research laboratories. Together, these techniques are effective on samples with low virus titers in the study of molecular epidemiology or in the identification of new disease markers, thus improving the performance of biological assays. In this context, modern advances in molecular technology are now beginning to complement more traditional approaches and promise to revolutionize the diagnosis of rabies. This brief review presents some of the recent molecular tools used for RABV analysis, with emphasis on rabies diagnosis and research.
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Affiliation(s)
- S R Silva
- Pasteur Institute, São Paulo, Brazil.
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