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Ferreira HL, Taylor TL, Absalon AE, Dimitrov KM, Cortés-Espinosa DV, Butt SL, Marín-Cruz JL, Goraichuk IV, Volkening JD, Suarez DL, Afonso CL. Presence of Newcastle disease viruses of sub-genotypes Vc and VIn in backyard chickens and in apparently healthy wild birds from Mexico in 2017. Virus Genes 2019; 55:479-489. [PMID: 30976951 DOI: 10.1007/s11262-019-01663-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/04/2019] [Indexed: 12/20/2022]
Abstract
Virulent Newcastle disease viruses (NDV) have been present in Mexico since 1946, and recently, multiple outbreaks have been reported in the country. Here, we characterized eleven NDV isolated from apparently healthy wild birds and backyard chickens in three different locations of Jalisco, Mexico in 2017. Total RNA from NDV was reverse-transcribed, and 1285 nucleotides, which includes 3/4 of the fusion gene, was amplified and sequenced using a long-read MinION sequencing method. The sequences were 99.99-100% identical to the corresponding region obtained using the Illumina MiSeq. Phylogenetic analysis using MinION sequences demonstrated that nine virulent NDV from wild birds belonged to sub-genotypes Vc and VIn, and two backyard chicken isolates were of sub-genotype Vc. The sub-genotype Vc viruses had nucleotide sequence identity that ranged from 97.7 to 98% to a virus of the same sub-genotype isolated from a chicken in Mexico in 2010. Three viruses from pigeons had 96.3-98.7% nucleotide identity to sub-genotype VIn pigeon viruses, commonly referred to as pigeon paramyxovirus, isolated in the USA during 2000-2016. This study demonstrates that viruses of sub-genotype Vc are still present in Mexico, and the detection of this sub-genotype in both chickens and wild birds suggests that transmission among these species may represent a biosecurity risk. This is the first detection and complete genome sequencing of genotype VI NDV from Mexico. In addition, the utilization of an optimized long-read sequencing method for rapid virulence and genotype identification using the Oxford nanopore MinION system is demonstrated.
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Affiliation(s)
- H L Ferreira
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA.,University of Sao Paulo, ZMV- FZEA, Pirassununga, 13635900, Brazil
| | - T L Taylor
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA
| | - A E Absalon
- Vaxbiotek S.C, San Lorenzo No. 122-7, CP. 72700, Cuautlancingo, Puebla, Mexico
| | - K M Dimitrov
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA
| | - D V Cortés-Espinosa
- Instituto Politécnico Nacional/CIBA-Tlaxcala, Carr. Est. Santa Ines Tecuexcomac Km 1.5, Tepetitla, Tlaxcala, Mexico
| | - S L Butt
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA.,Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - J L Marín-Cruz
- Consorcio consultivo empresarial S.C., Lasallistas No. 120 Col. Rosario, San Juan De Los Lagos, Jalisco, Mexico
| | - I V Goraichuk
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA.,National Scientific Center Institute of Experimental and Clinical Veterinary Medicine, 83, Pushkinska Street, Kharkiv, 61023, Ukraine
| | - J D Volkening
- BASE2BIO, 1945, Arlington Drive, Oshkosh, WI, 54904, USA
| | - D L Suarez
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA
| | - C L Afonso
- Southeast Poultry Research Laboratory, US National Poultry Research Center, 934 College Station Rd, Athens, GA, 30605, USA.
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Garcia M, Spatz SJ, Cheng Y, Riblet SM, Volkening JD, Schneiders GH. Attenuation and protection efficacy of ORF C gene-deleted recombinant of infectious laryngotracheitis virus. J Gen Virol 2016; 97:2352-2362. [PMID: 27283114 DOI: 10.1099/jgv.0.000521] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Infectious laryngotracheitis (ILT) is a highly contagious respiratory disease of chickens caused by infectious laryngotracheitis virus (ILTV). The disease is controlled by the use of live-attenuated vaccines. Previously we reported the complete nucleotide sequence of the ILTV vaccine strain (TCO) and identified a nonsense mutation in the gene encoding the ORF C protein. This suggested that the ORF C protein might be associated with viral virulence. To investigate this, an ILTV recombinant with a deletion in the gene encoding ORF C was constructed using the genome of the virulent United States Department of Agriculture (USDA) challenge strain (USDAch). Compared to the parental virus, the ΔORF C recombinant replicated in chicken kidney (CK) cells with similar kinetics and generated similar titres. This demonstrated that the ORF C deletion had no deleterious effects on replication efficacy in vitro. In chickens, the recombinant induced only minor microscopic tracheal lesions when inoculated via the intra-tracheal/ocular route, while the parental strain induced moderate to severe microscopic tracheal lesions, even though virus load in the tracheas were comparable. Groups of chickens vaccinated via eye-drop with the ∆ORFC-ILTV were protected to levels comparable to those elicited by TCO vaccination. To our knowledge, this is the first report that demonstrates the suitability of ∆ORFC as a live-attenuated vaccine to prevent the losses caused by ILTV.
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Affiliation(s)
- Maricarmen Garcia
- Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, 953 College Station Rd, Athens, GA 30602, USA
| | - S J Spatz
- US National Poultry Research Center, Agricultural Research Service, United States Department of Agriculture, 934 College Station Rd, Athens, GA 30602, USA
| | - Y Cheng
- Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, 953 College Station Rd, Athens, GA 30602, USA.,US National Poultry Research Center, Agricultural Research Service, United States Department of Agriculture, 934 College Station Rd, Athens, GA 30602, USA
| | - S M Riblet
- Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, 953 College Station Rd, Athens, GA 30602, USA
| | | | - G H Schneiders
- Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, 953 College Station Rd, Athens, GA 30602, USA
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