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Genetics, antigenicity and virulence properties of three infectious bronchitis viruses isolated from a single tracheal sample in a chicken with respiratory problems

Published on Sep 1, 2018in Virus Research2.74
· DOI :10.1016/j.virusres.2018.09.009
Zongxi Han21
Estimated H-index: 21
(Harbin Veterinary Research Institute),
Mengying Gao5
Estimated H-index: 5
(Harbin Veterinary Research Institute)
+ 4 AuthorsShengwang Liu22
Estimated H-index: 22
(Harbin Veterinary Research Institute)
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Abstract
Abstract Three different IBV genotypes/serotypes, designated ck/CH/LDL/150434–I (LDL/150434–I), ck/CH/LDL/150434–II (LDL/150434–II) and ck/CH/LDL/150434–III (LDL/150434–III), were detected in a single tracheal sample from a chicken showing signs of respiratory disease. The viruses were isolated using a cross-neutralization test and limiting dilution in embryonated specific-pathogen-free (SPF) eggs. Isolate LDL/150434–I was a re-isolation of H120 vaccine strain that was introduced into the chicken flock by vaccination, transmitted between chickens, and later accumulated several genomic mutations. Isolate LDL/150434–II was a novel variant that originated from recombination events between H120 and ck/CH/LDT3/03-like viruses. The widespread use of H120 vaccine, which offered incomplete protection against heterotypic IBVs in the fields, may play important roles in the emergence of such a novel genetic variant. Based on the analysis of S1 and complete genomic sequence, isolate LDL/150434–III was related genetically but distinct from the established strains of nrTW I type viruses of GI-7 lineage circulating in Mainland China since 2009. The three IBV isolates were avirulent when they infected SPF chickens. Furthermore, synergistic effects on pathogenicity were not observed when the different types co-infected the SPF chickens. However, the isolates persisted in the respiratory tracts longer in combined infected birds than those in individual infected birds. The results provide insights into the evolution of the viruses and co-infection of chickens with different virus serotypes.
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References57
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#1Liwen Xu (Harbin Veterinary Research Institute)H-Index: 1
#2Zongxi Han (Harbin Veterinary Research Institute)H-Index: 21
Last.Shengwang Liu (Harbin Veterinary Research Institute)H-Index: 22
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#1F. RizzoH-Index: 5
#2Kathryn M. Edenborough (RKI: Robert Koch Institute)H-Index: 1
Last.Andreas Kurth (RKI: Robert Koch Institute)H-Index: 31
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#1Mengying Gao (Harbin Veterinary Research Institute)H-Index: 5
#2Qiuling Wang (Harbin Veterinary Research Institute)H-Index: 5
Last.Shengwang Liu (Harbin Veterinary Research Institute)H-Index: 22
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#1Zongxi Han (Harbin Veterinary Research Institute)H-Index: 21
#2Tingting Zhang (Harbin Veterinary Research Institute)H-Index: 6
Last.Xiangang Kong (Harbin Veterinary Research Institute)H-Index: 21
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#1Qianqian Xu (Harbin Veterinary Research Institute)H-Index: 8
#2Zongxi Han (Harbin Veterinary Research Institute)H-Index: 21
Last.Shengwang Liu (Harbin Veterinary Research Institute)H-Index: 22
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#1Jamal S. M. Sabir (KAU: King Abdulaziz University)H-Index: 16
#2Tommy Tsan-Yuk Lam (HKU: University of Hong Kong)H-Index: 30
Last.Mohammad A. Khiyami (KACST: King Abdulaziz City for Science and Technology)H-Index: 10
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#1Lingfeng Chen (Harbin Veterinary Research Institute)H-Index: 2
#2Tingting Zhang (Harbin Veterinary Research Institute)H-Index: 6
Last.Huixin Li (Harbin Veterinary Research Institute)H-Index: 10
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