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Fortin A, Laconi A, Monne I, Zohari S, Andersson K, Grund C, Cecchinato M, Crimaudo M, Valastro V, D'Amico V, Bortolami A, Gastaldelli M, Varotto M, Terregino C, Panzarin V. A novel array of real-time RT-PCR assays for the rapid pathotyping of type I avian paramyxovirus (APMV-1). J Virol Methods 2023; 322:114813. [PMID: 37722509 DOI: 10.1016/j.jviromet.2023.114813] [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: 06/30/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/20/2023]
Abstract
Newcastle disease (ND) caused by virulent avian paramyxovirus type I (APMV-1) is a WOAH and EU listed disease affecting poultry worldwide. ND exhibits different clinical manifestations that may either be neurological, respiratory and/or gastrointestinal, accompanied by high mortality. In contrast, mild or subclinical forms are generally caused by lentogenic APMV-1 and are not subject to notification. The rapid discrimination of virulent and avirulent viruses is paramount to limit the spread of virulent APMV-1. The appropriateness of molecular methods for APMV-1 pathotyping is often hampered by the high genetic variability of these viruses that affects sensitivity and inclusivity. This work presents a new array of real-time RT-PCR (RT-qPCR) assays that enable the identification of virulent and avirulent viruses in dual mode, i.e., through pathotype-specific probes and subsequent Sanger sequencing of the amplification product. Validation was performed according to the WOAH recommendations. Performance indicators on sensitivity, specificity, repeatability and reproducibility yielded favourable results. Reproducibility highlighted the need for assays optimization whenever major changes are made to the procedure. Overall, the new RT-qPCRs showed its ability to detect and pathotype all tested APMV-1 genotypes and its suitability for routine use in clinical samples.
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Affiliation(s)
- Andrea Fortin
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy; Department of Animal Medicine, Production and Health, University of Padua (Unipd), 35020 Legnaro, Italy
| | - Andrea Laconi
- Department of Comparative Biomedicine and Food Science, University of Padua (Unipd), 35020 Legnaro, Italy
| | - Isabella Monne
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Siamak Zohari
- Department of Microbiology, Swedish National Veterinary Institute (SVA), SE751 89 Uppsala, Sweden
| | - Kristofer Andersson
- Department of Microbiology, Swedish National Veterinary Institute (SVA), SE751 89 Uppsala, Sweden
| | - Christian Grund
- Institute of Diagnostic Virology, Federal Research Institute for Animal Health, Friedrich-Loeffler-Institut (FLI), 17493 Greifswald-Insel Riems, Germany
| | - Mattia Cecchinato
- Department of Animal Medicine, Production and Health, University of Padua (Unipd), 35020 Legnaro, Italy
| | - Marika Crimaudo
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Viviana Valastro
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Valeria D'Amico
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Alessio Bortolami
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Michele Gastaldelli
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Maria Varotto
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Calogero Terregino
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy
| | - Valentina Panzarin
- EU/WOAH/National Reference Laboratory for Avian Influenza and Newcastle Disease, FAO Reference Centre for Animal Influenza and Newcastle Disease, Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), 35020 Legnaro, Italy.
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Molecular and Retrospective Analysis of Pigeon Paramyxovirus Type 1 Infections in Confinement-Reared Pigeons (Columbia livia); 2010-2020. J APPL POULTRY RES 2023. [DOI: 10.1016/j.japr.2023.100343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
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Investigation of many bacterial and viral infections circulating in pigeons showing nervous symptoms. Saudi J Biol Sci 2022; 29:2911-2920. [PMID: 35531168 PMCID: PMC9073067 DOI: 10.1016/j.sjbs.2022.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/06/2022] [Accepted: 01/10/2022] [Indexed: 11/30/2022] Open
Abstract
Pigeon’s flocks have shown several neurological symptoms including circling, torticollis, tremors, paralysis, which caused suspicion for viral or bacterial natural infections. Pigeon paramyxovirus type-1 (PPMV-1) is a notifiable disease-causing high morbidity and mortality with severe nervous symptoms. Clinical represented tissue specimens were collected from 50 infected pigeon flocks in eight governorates. All samples were examined bacteriologically (isolation, identification and serotyping) for E. coli, Salmonella spp., S. aureus and pseudomonas aeruginosa. Antimicrobial susceptibility test (AST) was accomplished for all isolates using a disk-diffusion test. For viral identification, RT-PCR specific oligonucleotide primers were used for distinguishing of Avian influenza virus, PPMV-1 and PPMV-3. Neurological manifestations were observed in pigeon’s flocks mainly in winter and autumn. The mortality rate in eight governorates was about 50% in 10 flocks and other houses mortality rate was ranged from 10 to 20%. Post mortem examination have shown hemorrhagic enteritis, soft and friable brain tissues and/or hemorrhages. The percentage of isolated bacteria E. coli, Salmonella spp., S. aureus and Pseudomonas aeruginosa were 75%, 75%, 50% and 18.75%; respectively. The antibiotic resistance pattern for bacterial isolates showed resist to ampicillin, amoxicillin- clavulinic acid, teteracyclin, ceftriaxone, doxycycline, sulfamethoxazole-trimethoprim and ceftazidine with different result for each type of bacteria, while Salmonella spp., isolates showed only a highly intermediate result for ciprofloxacin. Eight samples are positive with 16% to PPMV-1. Also, sample No.5,6,9 was co-infected with different types of bacterial isolates in addition to NDV. In conclusion, we reported several neurological symptoms in pigeon’s flocks mainly of bacterial infections (E. coli, Salmonella spp., S. aureus and Pseudomonas aeruginosa).
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Thomazelli LM, Sinhorini JA, Oliveira DBL, Knöbl T, Bosqueiro TCM, Sano E, Costa GCV, Monteiro C, Dorlass EG, Utecht N, Scagion GP, Meneguin C, Silva LMN, Moraes MVS, Bueno LM, Reischak D, Carrasco AOT, Arns CW, Ferreira HL, Durigon EL. An Outbreak in Pigeons Caused by the Subgenotype VI.2.1.2 of Newcastle Disease Virus in Brazil. Viruses 2021; 13:v13122446. [PMID: 34960715 PMCID: PMC8706928 DOI: 10.3390/v13122446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023] Open
Abstract
Newcastle disease virus (NDV) can infect over 250 bird species with variable pathogenicity; it can also infect humans in rare cases. The present study investigated an outbreak in feral pigeons in São Paulo city, Brazil, in 2019. Affected birds displayed neurological signs, and hemorrhages were observed in different tissues. Histopathology changes with infiltration of mononuclear inflammatory cells were also found in the brain, kidney, proventriculus, heart, and spleen. NDV staining was detected by immunohistochemistry. Twenty-seven out of thirty-four tested samples (swabs and tissues) were positive for Newcastle disease virus by RT-qPCR test, targeting the M gene. One isolate, obtained from a pool of positive swab samples, was characterized by the intracerebral pathogenicity index (ICPI) and the hemagglutination inhibition (HI) tests. This isolate had an ICPI of 0.99, confirming a virulent NDV strain. The monoclonal antibody 617/161, which recognizes a distinct epitope in pigeon NDV strains, inhibited the isolate with an HI titer of 512. A complete genome of NDV was obtained using next-generation sequencing. Phylogenetic analysis based on the complete CDS F gene grouped the detected isolate with other viruses from subgenotype VI.2.1.2, class II, including one previously reported in Southern Brazil in 2014. This study reports a comprehensive characterization of the subgenotype VI.2.1.2, which seems to have been circulating in Brazilian urban areas since 2014. Due to the zoonotic risk of NDV, virus surveillance in feral pigeons should also be systematically performed in urban areas.
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Affiliation(s)
- Luciano M. Thomazelli
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Juliana A. Sinhorini
- Zoonoses Surveillance Division of the Health Surveillance Coordination, Health Department of São Paulo, R. Santa Eulália, 86, São Paulo 02031-020, Brazil; (J.A.S.); (T.C.M.B.); (G.C.V.C.)
| | - Danielle B. L. Oliveira
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
- Zoonoses Surveillance Division of the Health Surveillance Coordination, Health Department of São Paulo, R. Santa Eulália, 86, São Paulo 02031-020, Brazil; (J.A.S.); (T.C.M.B.); (G.C.V.C.)
| | - Terezinha Knöbl
- Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil
| | - Tatiana C. M. Bosqueiro
- Avian Medicine Laboratory, Veterinary Medicine and Animal Science School, University of São Paulo, Butantã, São Paulo 05508-270, Brazil;
| | - Elder Sano
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
- Zoonoses Surveillance Division of the Health Surveillance Coordination, Health Department of São Paulo, R. Santa Eulália, 86, São Paulo 02031-020, Brazil; (J.A.S.); (T.C.M.B.); (G.C.V.C.)
| | - Gladyston C. V. Costa
- Zoonoses Surveillance Division of the Health Surveillance Coordination, Health Department of São Paulo, R. Santa Eulália, 86, São Paulo 02031-020, Brazil; (J.A.S.); (T.C.M.B.); (G.C.V.C.)
| | - Cairo Monteiro
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Erick G. Dorlass
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Nathalia Utecht
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Guilherme P. Scagion
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Carla Meneguin
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
| | - Laura M. N. Silva
- Graduate Program in Experimental Epidemiology Applied to Zoonoses, Veterinary Medicine and Animal Science School, University of São Paulo, São Paulo 05508-270, Brazil; (L.M.N.S.); (M.V.S.M.)
| | - Maria Vitória S. Moraes
- Graduate Program in Experimental Epidemiology Applied to Zoonoses, Veterinary Medicine and Animal Science School, University of São Paulo, São Paulo 05508-270, Brazil; (L.M.N.S.); (M.V.S.M.)
| | - Larissa M. Bueno
- Department of Veterinary Medicine, FZEA-USP, University of Sao Paulo, Pirassununga 13635-900, Brazil;
| | - Dilmara Reischak
- Federal Laboratory for Agricultural Defense in Sao Paulo (LFDA-SP), Animal Diagnostics Unit, Rua Raul Ferrari, s/n°, Campinas 13100-105, Brazil;
| | - Adriano O. T. Carrasco
- Department of Veterinary Medicine, State University of the Midwest, Alameda Élio Antonio Dalla Vecchia, 838, Guarapuava 85040-167, Brazil;
| | - Clarice W. Arns
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas—UNICAMP, P.O. Box 6109, Campinas 13083-970, Brazil;
| | - Helena L. Ferreira
- Graduate Program in Experimental Epidemiology Applied to Zoonoses, Veterinary Medicine and Animal Science School, University of São Paulo, São Paulo 05508-270, Brazil; (L.M.N.S.); (M.V.S.M.)
- Department of Veterinary Medicine, FZEA-USP, University of Sao Paulo, Pirassununga 13635-900, Brazil;
- Correspondence: ; Tel.: +55-19-3565-4385
| | - Edison L. Durigon
- Biomedical Science Institute, University of São Paulo, São Paulo 05508-000, Brazil; (L.M.T.); (D.B.L.O.); (E.S.); (C.M.); (E.G.D.); (N.U.); (G.P.S.); (C.M.); (E.L.D.)
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Xie P, Chen L, Zhang Y, Lin Q, Ding C, Liao M, Xu C, Xiang B, Ren T. Evolutionary Dynamics and Age-Dependent Pathogenesis of Sub-Genotype VI.2.1.1.2.2 PPMV-1 in Pigeons. Viruses 2020; 12:v12040433. [PMID: 32290416 PMCID: PMC7232354 DOI: 10.3390/v12040433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/03/2020] [Accepted: 04/10/2020] [Indexed: 01/21/2023] Open
Abstract
Pigeon paramyxovirus type 1 (PPMV-1) infection causes high morbidity in pigeons, resulting in a significant burden to the poultry industry. In this study, we isolated three PPMV-1 strains from diseased pigeons collected in Guangdong Province, South China, from June 2017 to April 2019. Genetic analysis revealed that these three PPMV-1 strains and most of the PPMV-1 strains isolated from China after 2011 were clustered into sub-genotype VI.2.1.1.2.2. Our Bayesian analysis revealed that the VI.2.1.1.2.2 viruses might have originated in Europe. Phylogeographic analyses revealed that East and South China might have played a key role in seeding the VI.2.1.1.2.2 PPMV-1 epidemic in China. To characterize the effect of age at infection on the outcome of PPMV-1 infection in pigeons, we investigated the pathogenesis and transmission of the pigeon/Guangdong/GZ08/2017 (GZ08) virus in 3-, 6-, and 12-week-old pigeons. Two of six 12-week-old pigeons inoculated with GZ08 survived, and all of the 3- and 6-week-pigeons inoculated with GZ08 died. Moreover, the GZ08 virus could be transmitted to 3-, 6-, and 12-week-old naïve contact pigeons. The lethality of the GZ08 virus through contact with 3-, 6-, and 12-week-old pigeons was 100%, 66.7%, and 0%, respectively, suggesting that the transmissibility of the GZ08 virus was stronger in young pigeons. These findings demonstrated that East and South China was the epicenter for dissemination of VI.2.1.1.2.2 PPMV-1, and age at infection has an impact on the outcome of PPMV-1 infection in pigeons.
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Affiliation(s)
- Peng Xie
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Libin Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Yifan Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Qiuyan Lin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Chan Ding
- Shanghai Veterinary Research Institute (SHVRI), Chinese Academy of Agricultural Sciences (CAAS), Shanghai 200241, China;
| | - Ming Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Chenggang Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Bin Xiang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (B.X.); (T.R.); Tel.: +86-20-8528-3054 (T.R.); Fax: +86-20-85280234 (T.R.)
| | - Tao Ren
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (P.X.); (L.C.); (Y.Z.); (Q.L.); (M.L.); (C.X.)
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou 510642, China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (B.X.); (T.R.); Tel.: +86-20-8528-3054 (T.R.); Fax: +86-20-85280234 (T.R.)
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6
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Aziz-Ul-Rahman, Rohaim MA, El Naggar RF, Mustafa G, Chaudhry U, Shabbir MZ. Comparative clinico-pathological assessment of velogenic (sub-genotype VIIi) and mesogenic (sub-genotype VIm) Avian avulavirus 1 in chickens and pigeons. Avian Pathol 2019; 48:610-621. [PMID: 31403322 DOI: 10.1080/03079457.2019.1648751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Newcastle disease (ND), caused by virulent Avian avulavirus 1 (AAvV 1), affects a wide range of avian species worldwide. Recently, several AAvVs of diverse genotypes have emerged with varying genomic and residue substitutions, and subsequent clinical impact on susceptible avian species. We assessed the clinico-pathological influence of two different AAvV 1 pathotypes [wild bird originated-velogenic strain (sub-genotype VIIi, MF437287) and feral pigeon originated-mesogenic strain (sub-genotype VIm, KU885949)] in commercial broiler chickens and pigeons. The velogenic strain caused 100% mortality in both avian species while the mesogenic strain caused 0% and 30% mortality in chickens and pigeons, respectively. Both strains showed tissue tropism for multiple tissues including visceral organs; however, minor variances were observed according to host and pathotype. The observed gross and microscopic lesions were typical of AAvV 1 infection. Utilizing oropharyngeal and cloacal swabs, a comparable pattern of viral shedding was observed for both strains from each of the infected individuals of both avian species. The study concludes a varying susceptibility of chickens and pigeons to different wild bird-originated AAvV 1 pathotypes and, therefore, suggests continuous monitoring and surveillance of currently prevailing strains for effective control of the disease worldwide, particularly in disease-endemic countries.
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Affiliation(s)
- Aziz-Ul-Rahman
- Department of Microbiology, University of Veterinary and Animal Sciences , Lahore Pakistan.,Quality Operation Laboratory, University of Veterinary and Animal Sciences , Lahore Pakistan
| | - Mohammed A Rohaim
- Department of Virology, Faculty of Veterinary Medicine, Cairo University , Giza , Egypt.,Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University , Lancaster , UK
| | - Rania F El Naggar
- Department of Virology, Faculty of Veterinary Medicine, University of Sadat City , Sadat , Egypt
| | - Ghulam Mustafa
- Department of Pathology, University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Umer Chaudhry
- Roslin Institute, Easter Bush Veterinary Centre, University of Edinburgh , Roslin, Midlothian , UK
| | - Muhammad Zubair Shabbir
- Quality Operation Laboratory, University of Veterinary and Animal Sciences , Lahore Pakistan
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