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Amoia CF, Hakizimana JN, Chengula AA, Munir M, Misinzo G, Weger-Lucarelli J. Genomic Diversity and Geographic Distribution of Newcastle Disease Virus Genotypes in Africa: Implications for Diagnosis, Vaccination, and Regional Collaboration. Viruses 2024; 16:795. [PMID: 38793675 PMCID: PMC11125703 DOI: 10.3390/v16050795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
The emergence of new virulent genotypes and the continued genetic drift of Newcastle disease virus (NDV) implies that distinct genotypes of NDV are simultaneously evolving in different geographic locations across the globe, including throughout Africa, where NDV is an important veterinary pathogen. Expanding the genomic diversity of NDV increases the possibility of diagnostic and vaccine failures. In this review, we systematically analyzed the genetic diversity of NDV genotypes in Africa using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Information published between 1999 and 2022 were used to obtain the genetic background of different genotypes of NDV and their geographic distributions in Africa. The following genotypes were reported in Africa: I, II, III, IV, V, VI, VII, VIII, XI, XIII, XIV, XVII, XVIII, XX, and XXI. A new putative genotype has been detected in the Democratic Republic of the Congo. However, of 54 African countries, only 26 countries regularly report information on NDV outbreaks, suggesting that this number may be vastly underestimated. With eight different genotypes, Nigeria is the country with the greatest genotypic diversity of NDV among African countries. Genotype VII is the most prevalent group of NDV in Africa, which was reported in 15 countries. A phylogeographic analysis of NDV sequences revealed transboundary transmission of the virus in Eastern Africa, Western and Central Africa, and in Southern Africa. A regional and continental collaboration is recommended for improved NDV risk management in Africa.
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Affiliation(s)
- Charlie F. Amoia
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, P.O. Box 3019, Morogoro 67125, Tanzania;
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania
| | - Jean N. Hakizimana
- OR Tambo Africa Research Chair for Viral Epidemics, SACIDS Foundation for One Health, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania;
| | - Augustino A. Chengula
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, P.O. Box 3019, Morogoro 67125, Tanzania;
| | - Muhammad Munir
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YG, UK;
| | - Gerald Misinzo
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, P.O. Box 3019, Morogoro 67125, Tanzania;
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania
- OR Tambo Africa Research Chair for Viral Epidemics, SACIDS Foundation for One Health, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania;
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24060, USA
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2
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Sheen JK, Rasambainarivo F, Saad-Roy CM, Grenfell BT, Metcalf CJE. Markets as drivers of selection for highly virulent poultry pathogens. Nat Commun 2024; 15:605. [PMID: 38242897 PMCID: PMC10799013 DOI: 10.1038/s41467-024-44777-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024] Open
Abstract
Theoretical models have successfully predicted the evolution of poultry pathogen virulence in industrialized farm contexts of broiler chicken populations. Whether there are ecological factors specific to more traditional rural farming that affect virulence is an open question. Within non-industrialized farming networks, live bird markets are known to be hotspots of transmission, but whether they could shift selection pressures on the evolution of poultry pathogen virulence has not been addressed. Here, we revisit predictions for the evolution of virulence for viral poultry pathogens, such as Newcastle's disease virus, Marek's disease virus, and influenza virus, H5N1, using a compartmental model that represents transmission in rural markets. We show that both the higher turnover rate and higher environmental persistence in markets relative to farms could select for higher optimal virulence strategies. In contrast to theoretical results modeling industrialized poultry farms, we find that cleaning could also select for decreased virulence in the live poultry market setting. Additionally, we predict that more virulent strategies selected in markets could circulate solely within poultry located in markets. Thus, we recommend the close monitoring of markets not only as hotspots of transmission, but as potential sources of more virulent strains of poultry pathogens.
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Affiliation(s)
- Justin K Sheen
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.
| | - Fidisoa Rasambainarivo
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
- Mahaliana Labs SARL, Antananarivo, Madagascar
| | - Chadi M Saad-Roy
- Miller Institute for Basic Research in Science, University of California, Berkeley, CA, USA
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Bryan T Grenfell
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
- School of Public and International Affairs, Princeton University, Princeton, NJ, USA
| | - C Jessica E Metcalf
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
- School of Public and International Affairs, Princeton University, Princeton, NJ, USA
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3
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Panyako PM, Ommeh SC, Kuria SN, Lichoti JK, Musina J, Nair V, Nene V, Oyola SO, Munir M. Metagenomic characterization reveals virus coinfections associated with Newcastle disease virus among poultry in Kenya. J Basic Microbiol 2023; 63:1383-1396. [PMID: 37821414 DOI: 10.1002/jobm.202300390] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/20/2023] [Accepted: 10/01/2023] [Indexed: 10/13/2023]
Abstract
Newcastle disease (ND) is an endemic viral disease affecting poultry and causing massive economic losses. This cross-sectional purposive study detected coinfections that are associated with the Newcastle disease virus among poultry from selected regions in Kenya. Cloacal (n = 599) and oral-pharyngeal (n = 435) swab samples were collected and pooled into 17 and 15 samples, respectively. A total of 17,034,948 and 7,751,974 paired-end reads with an average of 200 nucleotides were generated from the cloacal and oral-pharyngeal swab samples, respectively. Analysis of the de novo assembled contigs identified 177 and 18 cloacal and oral-pharyngeal contigs, respectively with hits to viral sequences, as determined by BLASTx and BLASTn analyses. Several known and unknown representatives of Coronaviridae, Picobirnaviridae, Reoviridae, Retroviridae, and unclassified Deltavirus were identified in the cloacal swab samples. However, no Newcastle disease virus (family Paramyxoviridae) was detected in the cloacal swabs, although they were detected in the oropharyngeal swabs of chickens sampled in Nairobi, Busia, and Trans Nzoia. Additionally, sequences representative of Paramyxoviridae, Coronaviridae, and Retroviridae were identified in the oral-pharyngeal swab samples. Infectious bronchitis virus and rotavirus were chickens' most prevalent coinfections associated with the Newcastle disease virus. The detection of these coinfections suggests that these viruses are significant threats to the control of Newcastle disease as the Newcastle disease virus vaccines are known to fail because of these coinfections. Therefore, this study provides important information that will help improve disease diagnosis and vaccine development for coinfections associated with the Newcastle disease virus.
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Affiliation(s)
- Philip M Panyako
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Sheila C Ommeh
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Stephen N Kuria
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Jacqueline K Lichoti
- State Department of Livestock, Ministry of Agriculture, Livestock and Fisheries, Nairobi, Kenya
| | - Johns Musina
- Department of Zoology, National Museums of Kenya, Nairobi, Kenya
| | - Venugopal Nair
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, UK
| | - Vish Nene
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Samuel O Oyola
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Muhammad Munir
- Department of Biomedical and Life Sciences, Lancaster University, Lancaster, UK
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Kariithi HM, Volkening JD, Chiwanga GH, Goraichuk IV, Olivier TL, Msoffe PLM, Suarez DL. Virulent Newcastle disease virus genotypes V.3, VII.2, and XIII.1.1 and their coinfections with infectious bronchitis viruses and other avian pathogens in backyard chickens in Tanzania. Front Vet Sci 2023; 10:1272402. [PMID: 37929287 PMCID: PMC10625407 DOI: 10.3389/fvets.2023.1272402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/04/2023] [Indexed: 11/07/2023] Open
Abstract
Oropharyngeal (OP) and cloacal (CL) swabs from 2049 adult backyard chickens collected at 12 live bird markets, two each in Arusha, Dar es Salaam, Iringa, Mbeya, Morogoro and Tanga regions of Tanzania were screened for Newcastle disease virus (NDV) using reverse transcription real-time PCR (rRT-PCR). The virus was confirmed in 25.23% of the birds (n = 517; rRT-PCR CT ≤ 30), with the highest positivity rates observed in birds from Dar es Salaam region with higher prevalence during the dry season (September-November 2018) compared to the rainy season (January and April-May 2019). Next-generation sequencing of OP/CL samples of 20 out of 32 birds that had high amounts of viral RNAs (CT ≤ 25) resulted in the assembly of 18 complete and two partial genome sequences (15,192 bp and 15,045-15,190 bp in length, respectively) of NDV sub-genotypes V.3, VII.2 and XIII.1.1 (n = 1, 13 and 4 strains, respectively). Two birds had mixed NDV infections (V.3/VII.2 and VII.2/XIII.1.1), and nine were coinfected with viruses of families Astroviridae, Coronaviridae, Orthomyxoviridae, Picornaviridae, Pneumoviridae, and Reoviridae. Of the coinfecting viruses, complete genome sequences of two avastroviruses (a recombinant chicken astrovirus antigenic group-Aii and avian nephritis virus genogroup-5) and two infectious bronchitis viruses (a turkey coronavirus-like recombinant and a GI-19 virus) were determined. The fusion (F) protein F1/F2 cleavage sites of the Tanzanian NDVs have the consensus motifs 112 RRRKR↓F 117 (VII.2 strains) and 112 RRQKR↓F 117 (V.3 and XIII.1.1 strains) consistent with virulent virus; virulence was confirmed by intracerebral pathogenicity index scores of 1.66-1.88 in 1-day-old chicks using nine of the 20 isolates. Phylogenetically, the complete F-gene and full genome sequences regionally cluster the Tanzanian NDVs with, but distinctly from, other strains previously reported in eastern and southern African countries. These data contribute to the understanding of NDV epidemiology in Tanzania and the region.
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Affiliation(s)
- Henry M. Kariithi
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, USDA, Athens, GA, United States
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Nairobi, Kenya
| | | | | | - Iryna V. Goraichuk
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, USDA, Athens, GA, United States
- National Scientific Center Institute of Experimental and Veterinary Medicine, Kharkiv, Ukraine
| | - Tim L. Olivier
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, USDA, Athens, GA, United States
| | - Peter L. M. Msoffe
- Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Morogoro, Tanzania
- National Ranching Company Ltd., Dodoma, Tanzania
| | - David L. Suarez
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, USDA, Athens, GA, United States
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5
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Amoia CF, Hakizimana JN, Duggal NK, Chengula AA, Rohaim MA, Munir M, Weger-Lucarelli J, Misinzo G. Genetic Diversity of Newcastle Disease Virus Involved in the 2021 Outbreaks in Backyard Poultry Farms in Tanzania. Vet Sci 2023; 10:477. [PMID: 37505881 PMCID: PMC10385779 DOI: 10.3390/vetsci10070477] [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: 05/10/2023] [Revised: 06/04/2023] [Accepted: 06/08/2023] [Indexed: 07/29/2023] Open
Abstract
Newcastle disease virus is a significant avian pathogen with the potential to decimate poultry populations all over the world and cause enormous economic losses. Distinct NDV genotypes are currently causing outbreaks worldwide. Due to the high genetic diversity of NDV, virulent strains that may result in a lack of vaccine protection are more likely to emerge and ultimately cause larger epidemics with massive economic losses. Thus, a more comprehensive understanding of the circulating NDV genotypes is critical to reduce Newcastle disease (ND) burden. In this study, NDV strains were isolated and characterized from backyard poultry farms from Tanzania, East Africa in 2021. Reverse-transcription polymerase chain reaction (RT-PCR) based on fusion (F) gene amplification was conducted on 79 cloacal or tracheal swabs collected from chickens during a suspected ND outbreak. Our results revealed that 50 samples out 79 (50/79; 63.3%) were NDV-positive. Sequencing and phylogenetic analyses of the selected NDV isolates showed that 39 isolates belonged to subgenotype VII.2 and only one isolate belonged to subgenotype XIII.1.1. Nucleotide sequences of the NDV F genes from Tanzania were closely related to recent NDV isolates circulating in southern Africa, suggesting that subgenotype VII.2 is the predominant subgenotype throughout Tanzania and southern Africa. Our data confirm the circulation of two NDV subgenotypes in Tanzania, providing important information to design genotype-matched vaccines and to aid ND surveillance. Furthermore, these results highlight the possibility of the spread and emergence of new NDV subgenotypes with the potential of causing future ND epizootics.
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Affiliation(s)
- Charlie F Amoia
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro 67125, Tanzania
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 67125, Tanzania
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24060, USA
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24060, USA
| | - Jean N Hakizimana
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 67125, Tanzania
| | - Nisha K Duggal
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24060, USA
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24060, USA
| | - Augustino A Chengula
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro 67125, Tanzania
| | - Mohammed A Rohaim
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YG, UK
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Muhammad Munir
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YG, UK
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24060, USA
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24060, USA
| | - Gerald Misinzo
- Department of Veterinary Microbiology, Parasitology and Biotechnology, Sokoine University of Agriculture, Morogoro 67125, Tanzania
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 67125, Tanzania
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6
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Epidemiology of Newcastle disease in poultry in Africa: systematic review and meta-analysis. Trop Anim Health Prod 2022; 54:214. [PMID: 35705876 DOI: 10.1007/s11250-022-03198-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
The present study intended to determine the prevalence of Newcastle disease in unvaccinated backyard poultry in Africa. Using the PRISMA approach, a systematic review and meta-analysis of 107 epidemiological studies was conducted. The meta-analysis identified significant variation of both seroprevalence (I2 = 99.38, P = 0.00) and Newcastle disease virus prevalence (I2 = 99.52, P = 0.00) reported in various studies included in this review. Publication bias was not detected in either case. Seroprevalence of Newcastle disease was 40.2 (95%CI 32.9-47.8). Seroprevalence was significantly influenced by sampling frame and the African region where the studies were conducted. The prevalence of Newcastle disease virus (NDV) was 12% (95%CI 7.3-17.8), and the variation was influenced by sampling frame, diagnostic test, and regions where the studies were conducted. Also, Newcastle disease (ND) accounted for 33.1% (95%CI 11.9-58.1) of sick chickens. Results also indicated that genotypes VI and VII are widely distributed in all countries included in the study. However, genotype V is restricted in East Africa, and genotypes XIV, XVII, and XVIII are restricted in West and Central Africa. On the other hand, genotype XI occurs in Madagascar only. In addition, virulent genotypes were isolated from apparently healthy and sick birds. It is concluded that several genotypes of NDV are circulating and maintained within the poultry population. African countries should therefore strengthen surveillance systems, be able to study the viruses circulating in their territories, and establish control programs.
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Sahoo N, Bhuyan K, Panda B, Behura NC, Biswal S, Samal L, Chaudhary D, Bansal N, Singh R, Joshi VG, Jindal N, Mahajan NK, Maan S, Ravishankar C, Rajasekhar R, Radzio-Basu J, Herzog CM, Kapur V, Mor SK, Goyal SM. Prevalence of Newcastle disease and associated risk factors in domestic chickens in the Indian state of Odisha. PLoS One 2022; 17:e0264028. [PMID: 35171961 PMCID: PMC8849498 DOI: 10.1371/journal.pone.0264028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/31/2022] [Indexed: 11/27/2022] Open
Abstract
Newcastle disease (ND), caused by Newcastle disease virus (NDV), is a contagious disease that affects a variety of domestic and wild avian species. Though ND is vaccine-preventable, it is a persistent threat to poultry industry across the globe. The disease represents a leading cause of morbidity and mortality in chickens. To better understand the epidemiology of NDV among commercial and backyard chickens of Odisha, where chicken farming is being prioritized to assist with poverty alleviation, a cross-sectional study was conducted in two distinct seasons during 2018. Choanal swabs (n = 1361) from live birds (commercial layers, broilers, and backyard chicken) and tracheal tissues from dead birds (n = 10) were collected and tested by real-time reverse transcription polymerase chain reaction (RT-PCR) for the presence of matrix (M) and fusion (F) genes of NDV. Risk factors at the flock and individual bird levels (health status, ND vaccination status, geographical zone, management system, and housing) were assessed using multivariable logistic regression analyses. Of the 1371 samples tested, 160 were positive for M gene amplification indicating an overall apparent prevalence of 11.7% (95% CI 10.1–13.5%). Circulation of virulent NDV strains was also evident with apparent prevalence of 8.1% (13/160; 95% CI: 4.8–13.4%). In addition, commercial birds had significantly higher odds (75%) of being infected with NDV as compared to backyard poultry (p = 0.01). This study helps fill a knowledge gap in the prevalence and distribution of NDV in apparently healthy birds in eastern India, and provides a framework for future longitudinal research of NDV risk and mitigation in targeted geographies—a step forward for effective control of ND in Odisha.
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Affiliation(s)
- Niranjana Sahoo
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
- * E-mail:
| | - Kashyap Bhuyan
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Biswaranjan Panda
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Nrushingha Charan Behura
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Sangram Biswal
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Lipismita Samal
- Department of Epidemiology & Preventive Medicine and Poultry Science, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Deepika Chaudhary
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Nitish Bansal
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Renu Singh
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Vinay G. Joshi
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Naresh Jindal
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Nand K. Mahajan
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Sushila Maan
- Departments of Veterinary Public Health & Epidemiology and Animal Biotechnology, College of Veterinary Sciences, LalaLajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Chintu Ravishankar
- Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Pookode, Kerala, India
| | - Ravindran Rajasekhar
- Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Pookode, Kerala, India
| | - Jessica Radzio-Basu
- The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Catherine M. Herzog
- The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Vivek Kapur
- The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Department of Animal Science, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Sunil K. Mor
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Sagar M. Goyal
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
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8
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Joshi VG, Chaudhary D, Bansal N, Singh R, Maan S, Mahajan NK, Ravishankar C, Sahoo N, Mor SK, Radzio-Basu J, Herzog CM, Kapur V, Goel P, Jindal N, Goyal SM. Prevalence of Newcastle Disease Virus in Commercial and Backyard Poultry in Haryana, India. Front Vet Sci 2021; 8:725232. [PMID: 34805330 PMCID: PMC8600042 DOI: 10.3389/fvets.2021.725232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
Newcastle disease virus (NDV) causes Newcastle disease (ND) in poultry. The ND is a highly contagious disease, which is endemic in several countries despite regular vaccination with live or killed vaccines. Studies on NDV in India are mostly targeted toward its detection and characterization from disease outbreaks. A surveillance study was undertaken to determine NDV prevalence throughout the state of Haryana from March 2018 to March 2020 using a stratified sampling scheme. The state was divided into three different zones and a total of 4,001 choanal swab samples were collected from backyard poultry, commercial broilers, and layers. These samples were tested for the M gene of NDV using real-time RT-PCR. Of the 4,001 samples tested, 392 were positive (9.8% apparent prevalence; 95% CI: 8.9–10.8%) for the M gene. Of these 392 M gene positive samples, 35 (8.9%; 95% CI: 6.4–12.3%) were found to be positive based on F gene real-time RT-PCR. Circulation of NDV in commercial and backyard poultry highlights the importance of surveillance studies even in apparently healthy flocks. The information generated in this study should contribute to better understanding of NDV epidemiology in India and may help formulate appropriate disease control strategies for commercial and backyard birds.
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Affiliation(s)
- Vinay G Joshi
- Department of Animal Biotechnology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Deepika Chaudhary
- Department of Veterinary Public Health & Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Nitish Bansal
- Department of Veterinary Public Health & Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Renu Singh
- Department of Veterinary Public Health & Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Sushila Maan
- Department of Animal Biotechnology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Nand K Mahajan
- Department of Veterinary Public Health & Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Chintu Ravishankar
- Department of Veterinary Microbiology, Kerala Veterinary and Animal Sciences University, Pookode, India
| | - Niranjana Sahoo
- College of Veterinary Science and Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Sunil K Mor
- Department of Veterinary Population Medicine and Veterinary Diagnostic Laboratory, University of Minnesota, St. Paul, MN, United States
| | - Jessica Radzio-Basu
- The Huck Institute of the Life Sciences, University Park, PA, United States.,Department of Animal Science, The Pennsylvania State University, University Park, PA, United States
| | - Catherine M Herzog
- The Huck Institute of the Life Sciences, University Park, PA, United States
| | - Vivek Kapur
- The Huck Institute of the Life Sciences, University Park, PA, United States.,Department of Animal Science, The Pennsylvania State University, University Park, PA, United States
| | - Parveen Goel
- Directorate of Research, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Naresh Jindal
- Department of Veterinary Public Health & Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Sagar M Goyal
- Department of Veterinary Population Medicine and Veterinary Diagnostic Laboratory, University of Minnesota, St. Paul, MN, United States
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9
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Characterization of nucleocapsid and matrix proteins of Newcastle disease virus in yeast. 3 Biotech 2021; 11:65. [PMID: 33489683 DOI: 10.1007/s13205-020-02624-4] [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: 11/03/2020] [Accepted: 12/26/2020] [Indexed: 10/22/2022] Open
Abstract
Newcastle disease virus is a member of family Paramyxoviridae that infects chicken. Its genome comprises ~15.2 kb negative-sense RNA that encodes six major proteins. The virus encodes various proteins; among all, nucleocapsid (NP) and matrix (M) help in virus replication and its budding from the host cells, respectively. In this study, we investigated the intracellular distribution of NP and M upon expression in the yeast Saccharomyces cerevisiae. We observed nuclear targeting of M, and vacuolar localization of NP was observed in a fraction of yeast cells. Prolonged expression of GFP fused NP or M resulted in altered cell viability and intracellular production of reactive oxygen species in yeast cells. The expression of viral proteins did not alter the morphology and number of the organelles such as nucleus, mitochondria, endoplasmic reticulum, and peroxisomes. However, a significant effect was observed on vacuolar morphology and number in yeast cells. These observations point towards the importance of host cellular reorganization in viral infection. These findings may enable us to understand the conserved pathways affected in eukaryotic cells as a result of viral protein expression. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-020-02624-4.
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Kariithi HM, Ferreira HL, Welch CN, Ateya LO, Apopo AA, Zoller R, Volkening JD, Williams-Coplin D, Parris DJ, Olivier TL, Goldenberg D, Binepal YS, Hernandez SM, Afonso CL, Suarez DL. Surveillance and Genetic Characterization of Virulent Newcastle Disease Virus Subgenotype V.3 in Indigenous Chickens from Backyard Poultry Farms and Live Bird Markets in Kenya. Viruses 2021; 13:v13010103. [PMID: 33451125 PMCID: PMC7828601 DOI: 10.3390/v13010103] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 12/20/2022] Open
Abstract
Kenyan poultry consists of ~80% free-range indigenous chickens kept in small flocks (~30 birds) on backyard poultry farms (BPFs) and they are traded via live bird markets (LBMs). Newcastle disease virus (NDV) was detected in samples collected from chickens, wild farm birds, and other domestic poultry species during a 2017–2018 survey conducted at 66 BPFs and 21 LBMs in nine Kenyan counties. NDV nucleic acids were detected by rRT-PCR L-test in 39.5% (641/1621) of 1621 analyzed samples, of which 9.67% (62/641) were NDV-positive by both the L-test and a fusion-test designed to identify the virulent virus, with a majority being at LBMs (64.5%; 40/62) compared to BPFs (25.5%; 22/62). Virus isolation and next-generation sequencing (NGS) on a subset of samples resulted in 32 complete NDV genome sequences with 95.8–100% nucleotide identities amongst themselves and 95.7-98.2% identity with other east African isolates from 2010-2016. These isolates were classified as a new sub-genotype, V.3, and shared 86.5–88.9% and 88.5–91.8% nucleotide identities with subgenotypes V.1 and V.2 viruses, respectively. The putative fusion protein cleavage site (113R-Q-K-R↓F 117) in all 32 isolates, and a 1.86 ICPI score of an isolate from a BPF chicken that had clinical signs consistent with Newcastle disease, confirmed the high virulence of the NDVs. Compared to genotypes V and VI viruses, the attachment (HN) protein of 18 of the 32 vNDVs had amino acid substitutions in the antigenic sites. A time-scaled phylogeographic analysis suggests a west-to-east dispersal of the NDVs via the live chicken trade, but the virus origins remain unconfirmed due to scarcity of continuous and systematic surveillance data. This study reveals the widespread prevalence of vNDVs in Kenyan backyard poultry, the central role of LBMs in the dispersal and possibly generation of new virus variants, and the need for robust molecular epidemiological surveillance in poultry and non-poultry avian species.
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Affiliation(s)
- Henry M. Kariithi
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Kaptagat Road, Loresho, Nairobi P.O. Box 57811-00200, Kenya; (L.O.A.); (Y.S.B.)
| | - Helena L. Ferreira
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
- Department of Veterinary Medicine, FZEA-USP, University of Sao Paulo, Pirassununga 13635900, Brazil
| | - Catharine N. Welch
- Florida Department of Environmental Protection, Division of Recreation and Parks 33104 NW 192nd Ave, Okeechobee, FL 34972, USA;
| | - Leonard O. Ateya
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Kaptagat Road, Loresho, Nairobi P.O. Box 57811-00200, Kenya; (L.O.A.); (Y.S.B.)
| | - Auleria A. Apopo
- Directorate of Veterinary Services, State Department for Livestock, Ministry of Agriculture, Livestock, Fisheries and Cooperatives, Nairobi P.O. Box 34188-00100, Kenya;
| | - Richard Zoller
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
| | | | - Dawn Williams-Coplin
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
| | - Darren J. Parris
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
| | - Tim L. Olivier
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
| | - Dana Goldenberg
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
| | - Yatinder S. Binepal
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Kaptagat Road, Loresho, Nairobi P.O. Box 57811-00200, Kenya; (L.O.A.); (Y.S.B.)
| | - Sonia M. Hernandez
- Warnell School of Forestry and Natural Resources and The Southeastern Cooperative Wildlife Disease Study at the College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA;
| | - Claudio L. Afonso
- BASE2BIO, Oshkosh, WI 54904, USA;
- Correspondence: (C.L.A.); (D.L.S.); Tel.: +1-770-500-8071 (C.L.A.); +1-706-546-3433 (D.L.S.)
| | - David L. Suarez
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, USDA-ARS, 934 College Station Road, Athens, GA 30605, USA; (H.M.K.); (H.L.F.); (R.Z.); (D.W.-C.); (D.J.P.); (T.L.O.); (D.G.)
- Correspondence: (C.L.A.); (D.L.S.); Tel.: +1-770-500-8071 (C.L.A.); +1-706-546-3433 (D.L.S.)
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Steensels M, Van Borm S, Mertens I, Houdart P, Rauw F, Roupie V, Snoeck CJ, Bourg M, Losch S, Beerens N, van den Berg T, Lambrecht B. Molecular and virological characterization of the first poultry outbreaks of Genotype VII.2 velogenic avian orthoavulavirus type 1 (NDV) in North-West Europe, BeNeLux, 2018. Transbound Emerg Dis 2020; 68:2147-2160. [PMID: 33012090 PMCID: PMC8359175 DOI: 10.1111/tbed.13863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 09/21/2020] [Accepted: 09/25/2020] [Indexed: 11/29/2022]
Abstract
After two decades free of Newcastle disease, Belgium encountered a velogenic avian orthoavulavirus type 1 epizootic in 2018. In Belgium, 20 cases were diagnosed, of which 15 occurred in hobby flocks, 2 in professional poultry flocks and 3 in poultry retailers. The disease also disseminated from Belgium towards the Grand Duchy of Luxembourg by trade. Independently, the virus was detected once in the Netherlands, almost simultaneously to the first Belgian detection. As such Newcastle disease emerged in the entire BeNeLux region. Both the polybasic sequence of the fusion gene cleavage site and the intracerebral pathotyping assay demonstrated the high pathogenicity of the strain. This paper represents the first notification of this specific VII.2 subgenotype in the North-West of Europe. Time-calibrated full genome phylogenetic analysis indicated the silent or unreported circulation of the virus prior to the emergence of three genetic clusters in the BeNeLux region without clear geographical or other epidemiological correlation. The Dutch strain appeared as an outgroup to the Belgian and Luxembourgian strains in the time-correlated genetic analysis and no epidemiological link could be identified between the Belgian and Dutch outbreaks. In contrast, both genetic and epidemiological outbreak investigation data linked the G.D. Luxembourg case to the Belgian outbreak. The genetic links between Belgian viruses from retailers and hobby flocks only partially correlated with epidemiological data. Two independent introductions into the professional poultry sector were identified, although their origin could not be determined. Animal experiments using 6-week- old specific pathogen-free chickens indicated a systemic infection and efficient transmission of the virus. The implementation of re-vaccination in the professional sector, affected hobby and retailers, as well as the restriction on assembly and increased biosecurity measures, possibly limited the epizootic and resulted in the disappearance of the virus. These findings emphasize the constant need for awareness and monitoring of notifiable viruses in the field.
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Affiliation(s)
- Mieke Steensels
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
| | - Steven Van Borm
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
| | - Ingeborg Mertens
- Federal Agency for the Safety of the Food Chain, General Direction Control Policy, The Belgian Federal Government, Brussels, Belgium
| | - Philippe Houdart
- Federal Agency for the Safety of the Food Chain, General Direction Control Policy, The Belgian Federal Government, Brussels, Belgium
| | - Fabienne Rauw
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
| | - Virginie Roupie
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
| | - Chantal J Snoeck
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Manon Bourg
- Laboratory of Veterinary Medicine, Veterinary Services Administration, Ministry of Agriculture, Viticulture and rural Development, Dudelange, Luxembourg
| | - Serge Losch
- Laboratory of Veterinary Medicine, Veterinary Services Administration, Ministry of Agriculture, Viticulture and rural Development, Dudelange, Luxembourg
| | - Nancy Beerens
- Division of Virology, AI/ND Reference Laboratory for the Netherlands, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - Thierry van den Berg
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
| | - Bénédicte Lambrecht
- Sciensano, Avian Virology and Immunology Service, AI/ND Reference Laboratory for Belgium and GD Luxembourg, Brussels, Belgium
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Genomic and Pathogenic Characteristics of Virulent Newcastle Disease Virus Isolated from Chicken in Live Bird Markets and Backyard Flocks in Kenya. Int J Microbiol 2020; 2020:4705768. [PMID: 32908524 PMCID: PMC7450340 DOI: 10.1155/2020/4705768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 07/22/2020] [Indexed: 12/15/2022] Open
Abstract
Newcastle disease (ND) causes significant economic losses in the poultry industry in developing countries. In Kenya, despite rampant annual ND outbreaks, implementation of control strategies is hampered by a lack of adequate knowledge on the circulating and outbreak causing-NDV strains. This study reports the first complete genome sequences of NDV from backyard chicken in Kenya. The results showed that all three isolates are virulent, as assessed by the mean death time (MDT) and intracerebral pathogenicity index (ICPI) in specific antibody negative (SAN) embryonated eggs and 10-day-old chickens, respectively. Also, the polybasic amino acid sequence at the fusion-protein cleavage site had the motif 112RRQKRFV118. Histopathological findings in four-week-old SPF chicken challenged with the NDV isolates KE001, KE0811, and KE0698 showed multiple organ involvement at five days after infection with severe effects seen in lymphoid tissues and blood vessels. Analysis of genome sequences obtained from the three isolates showed that they were 15192 base pair (bp) in length and had genomic features consistent with other NDV strains, the functional sites within the coding sequence being highly conserved in the sequence of the three isolates. Amino acid residues and substitutions in the structural proteins of the three isolates were similar to the newly isolated Tanzanian NDV strain (Mbeya/MT15). A similarity matrix showed a high similarity of the isolates to NDV strains of class II genotype V (89–90%) and subgenotype Vd (95–97%). Phylogenetic analysis confirmed that the three isolates are closely related to NDV genotype V strains but form a distinct cluster together with NDV strains from the East African countries of Uganda and Tanzania to form the newly characterized subgenotype Vd. Our study provides the first description of the genomic and pathological characteristics of NDV of subgenotype Vd and lays a baseline in understanding the evolutionary dynamics of NDV and, in particular, Genotype V. This information will be useful in the development of specific markers for detection of viruses of genotype V and generation of genotype matched vaccines.
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Anjum FR, Anam S, Rahman SU, Ali S, Aslam MA, Rizvi F, Asif M, Abdullah RM, Abaidullah M, Shakir MZ, Goraya MU. Anti-chicken type I IFN countermeasures by major avian RNA viruses. Virus Res 2020; 286:198061. [PMID: 32561378 DOI: 10.1016/j.virusres.2020.198061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/27/2020] [Accepted: 06/10/2020] [Indexed: 12/24/2022]
Abstract
Chicken type I interferons (type I IFNs) are key antiviral players of the chicken innate immune system and are considered potent antiviral agents against avian viral pathogens. Chicken type I IFNs are divided into three subtypes namely, chIFN-α, chIFN-β, and chIFN-κ. Viral pathogen-associated molecular patterns (PAMPs) recognized by their corresponding specific PRRs (pattern recognition receptors) induce the expression of chicken type I IFNs. Interaction of chicken type I IFNs with their subsequent IFN receptors results in the activation of the JAK-STAT pathway, which in turn activates hundreds of chicken interferon-stimulated genes (chISGs). These chISGs establish an antiviral state in neighboring cells and prevent the replication and dissemination of viruses within chicken cells. Chicken type I IFNs activate different pathways that constitute major antiviral innate defense mechanisms in chickens. However, evolutionary mechanisms in viruses have made them resistant to these antiviral players by manipulating host innate immune pathways. This review focuses on the underlying molecular mechanisms employed by avian RNA viruses to counteract chicken type I IFNs and chISGs through different viral proteins. This may help to understand host-pathogen interactions and the development of novel therapeutic strategies to control viral infections in poultry.
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Affiliation(s)
| | - Sidra Anam
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Sajjad Ur Rahman
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Sultan Ali
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | | | - Farzana Rizvi
- Department of Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Asif
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | | | - Muhammad Abaidullah
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
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Apopo AA, Kariithi HM, Ateya LO, Binepal YS, Sirya JH, Dulu TD, Welch CN, Hernandez SM, Afonso CL. A retrospective study of Newcastle disease in Kenya. Trop Anim Health Prod 2019; 52:699-710. [PMID: 31501991 PMCID: PMC7039849 DOI: 10.1007/s11250-019-02059-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/29/2019] [Indexed: 11/16/2022]
Abstract
Newcastle disease (ND) is a major constraint to Kenya’s poultry production, which is comprised of approximately 80% indigenous chickens (ICs; caged and free-range system) and 20% exotic chickens (intensive system). This study analyzed cases reported as suspected ND in Kenya between 2005 and 2015. Of the suspected 332 ND reported cases from the three production systems in 27 locations within six Kenyan Agro-Ecological Zones (AEZs), 140 diagnosed as infected with avian orthoavulavirus 1 (AOaV-1; formerly Newcastle disease virus) were present in every year in all AEZs. The numbers of AOaV-1-positive cases differed significantly (p < 0.05) between the production systems across the years depending on the season, climate, and location. In the free-range system, both ambient temperatures and season associated significantly (p = 0.001 and 0.02, respectively) with the number of cases, while in the intensive and caged systems, the positive cases correlated significantly with season and relative humidity, respectively (p = 0.05). Regardless of the production systems, the numbers of clinically sick birds positively correlated with the ambient temperatures (r = 0.6; p < 0.05). Failure to detect AOaV-1 in 58% of the ND cases reported, and mortalities exceeding the observed numbers of clinically sick birds suggest deficiencies in the current ND reporting and diagnostic system. Intensive farmers were the slowest in reporting the cases and diagnostic deficiencies were most evident by failure to test the exposure of ICs to natural infection with AOaV-1 and for the AOaV-1-negative cases lack of testing for other pathogens and/or AOaV-1 variants. This study indicates a need for improved surveillance and diagnostics in Kenyan domestic poultry.
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Affiliation(s)
- Auleria A Apopo
- Directorate of Veterinary Services, State Department for Livestock, Ministry of Agriculture, Livestock, Fisheries and Irrigation, Private Bag-00625, Nairobi, Kenya
| | - Henry M Kariithi
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, P.O Box 57811, Kaptagat Road, Loresho, Nairobi, 00200, Kenya. .,Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, US National Poultry Research Center, 934 College Station Road, Athens, GA, 30605, USA.
| | - Leonard O Ateya
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, P.O Box 57811, Kaptagat Road, Loresho, Nairobi, 00200, Kenya
| | - Yatinder S Binepal
- Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, P.O Box 57811, Kaptagat Road, Loresho, Nairobi, 00200, Kenya
| | - Jane H Sirya
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000, Nairobi, 00200, Kenya
| | - Thomas D Dulu
- Directorate of Veterinary Services, State Department for Livestock, Ministry of Agriculture, Livestock, Fisheries and Irrigation, Private Bag-00625, Nairobi, Kenya
| | - Catharine N Welch
- Warnell School of Forestry and Natural Resources and The Southeastern Cooperative Wildlife Disease Study at the College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA
| | - Sonia M Hernandez
- Warnell School of Forestry and Natural Resources and The Southeastern Cooperative Wildlife Disease Study at the College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA
| | - Claudio L Afonso
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, US National Poultry Research Center, 934 College Station Road, Athens, GA, 30605, USA
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First Complete Genome Sequence of a Subgenotype Vd Newcastle Disease Virus Isolate. Microbiol Resour Announc 2019; 8:8/27/e00436-19. [PMID: 31270191 PMCID: PMC6606905 DOI: 10.1128/mra.00436-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
A Newcastle disease virus was isolated from a chicken from a live bird market in the Mbeya region of Tanzania. Complete genome characterization of the isolate identified it as a member of subgenotype Vd. This is the first complete genome sequence of this subgenotype. A Newcastle disease virus was isolated from a chicken from a live bird market in the Mbeya region of Tanzania. Complete genome characterization of the isolate identified it as a member of subgenotype Vd. This is the first complete genome sequence of this subgenotype.
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