ArticleVeterinary medicine (Auckland, N.Z.)2012
S1 gene sequence analysis of new variant isolates of avian infectious bronchitis virus in Tunisia.
Article in Veterinary medicine (Auckland, N.Z.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Article
- Aptamer-Assisted Proximity Ligation Assay for Sensitive Detection of Infectious Bronchitis Coronavirus.Microbiology spectrum · 2023Article
- Molecular characterization of a unique variant of avian infectious bronchitis virus in Tunisia.Poultry science · 2019Article
- Viral interference between low pathogenic avian influenza H9N2 and avian infectious bronchitis viruses in vitro and in ovo.Journal of virological methods · 2018Article
- Accurate Detection of Avian Respiratory Viruses by Use of Multiplex PCR-Based Luminex Suspension Microarray Assay.Journal of clinical microbiology · 2016Article
- Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions.Journal of basic & applied zoology · 2016Review
- Genetic Characterization of the Belgian Nephropathogenic Infectious Bronchitis Virus (NIBV) Reference Strain B1648.Viruses · 2015Article
- Evaluation of protection conferred by a vaccination program based on the H120 and CR88 commercial vaccines against a field variant of avian infectious bronchitis virus.The Journal of applied poultry research · 2014Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTissue samples were collected from suspected broiler flocks showing respiratory signs to identify infectious bronchitis virus (IBV), characterize emerging field strains, and study their relationships with the Massachusetts H120 strain, the only IB vaccine used in Tunisia. SAMPLES AND
methodsSeveral IBV isolates were identified from field samples collected from flocks located in different regions in the northeast of Tunisia. The IBV isolates were characterized and compared to commonly used vaccine strains (including 793B, D274, and H120 types), other reference IBV strains from Europe, and the recently characterized Tunisian field variants TN20/00, TN200/01, and TN335/01. Reverse transcription-polymerase chain reaction and nucleotide sequencing analyses of the hypervariable regions of the S1 gene were carried out.
resultsFour new IBV variants were isolated during the period 2007-10 and were designated TN295/07, TN296/07, TN556/07, and TN557/07. The amino acid sequence data showed 100% similarity between TN295/07 and TN296/07, suggesting that these two isolates are identical and belong to the same genotype. Similar results were demonstrated for TN556/07 and TN557/07. Sequence identity values indicated that TN296/07 and TN556/07 share 55% amino acid homologies between each other, but are very different from the reference IBV serotypes, in particular the H120 strain. It was also shown that they have 50%-77% similarities with the Tunisian virus isolated between 2000 and 2001. Phylogenetic clustering allowed classification of these Tunisian isolates as new genotypes that are closer to TN200/01, TN335/01 Tunisian field variants, and Italy02 variant than MassH120 vaccine strain.
conclusionS1 sequence analyses confirmed the cocirculation of H120 vaccine strain with novel IBV variants isolated from Tunisian field.
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