Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions
Infectious bronchitis virus (IBV) is a major viral pathogen of commercial poultry, affecting chickens of all ages and causing major economic losses in poultry industry worldwide. Frequent points of mutations and recombination events in the S1 gene region, result in the emergence of new IBVs variants...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2016-08-01
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| Series: | Journal of Basic and Applied Zoology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090989616300200 |
| _version_ | 1818336525355581440 |
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| author | Khadija Khataby Amal Souiri Yassine Kasmi Chafiqa Loutfi My Mustapha Ennaji |
| author_facet | Khadija Khataby Amal Souiri Yassine Kasmi Chafiqa Loutfi My Mustapha Ennaji |
| author_sort | Khadija Khataby |
| collection | DOAJ |
| description | Infectious bronchitis virus (IBV) is a major viral pathogen of commercial poultry, affecting chickens of all ages and causing major economic losses in poultry industry worldwide. Frequent points of mutations and recombination events in the S1 gene region, result in the emergence of new IBVs variants circulating in the form of several serotypes/genotypes that can be partially or poorly neutralized by current vaccines. IBV is well studied worldwide, nevertheless in African countries epidemiological and scientific data are poor and not updated.
This review aims to give a current overview of IBV situation, to establish evolutionary relationship between the African variants and to list some of the potential measures to control IBV in Africa.
Three S1 gene hypervariable regions were studied and compared to the reference genotypes/serotypes that found emerging in African regions. This comparison was based on phylogenetic trees, nucleotide and amino-acid sequence analysis. It clearly appears that IBV variants reported in Africa, display a low genetic relationship between them and with the majority of the reference strains emerging in neighboring countries, except the case of variants from Libya and Egypt that show a high relatedness. Also the Massachusetts serotypes were the most prevalent co-circulating with both serotypes, Italy02 type in Morocco and Qx-like genotype in South part of the African continent. In order to control the IBV variants in African regions, an efficient vaccination strategy program should be implemented. |
| first_indexed | 2024-12-13T14:40:42Z |
| format | Article |
| id | doaj.art-07510293dad24217b135b3b0e724e0c3 |
| institution | Directory Open Access Journal |
| issn | 2090-9896 |
| language | English |
| last_indexed | 2024-12-13T14:40:42Z |
| publishDate | 2016-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Basic and Applied Zoology |
| spelling | doaj.art-07510293dad24217b135b3b0e724e0c32022-12-21T23:41:36ZengSpringerOpenJournal of Basic and Applied Zoology2090-98962016-08-0176C203010.1016/j.jobaz.2016.08.002Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regionsKhadija Khataby0Amal Souiri1Yassine Kasmi2Chafiqa Loutfi3My Mustapha Ennaji4Laboratory of Virology, Microbiology, Quality and Biotechnologies/Eco-toxicology & Biodiversity, Faculty of Sciences and Techniques-Mohammedia, University Hassan II of Casablanca, MoroccoLaboratory of Virology, Microbiology, Quality and Biotechnologies/Eco-toxicology & Biodiversity, Faculty of Sciences and Techniques-Mohammedia, University Hassan II of Casablanca, MoroccoLaboratory of Virology, Microbiology, Quality and Biotechnologies/Eco-toxicology & Biodiversity, Faculty of Sciences and Techniques-Mohammedia, University Hassan II of Casablanca, MoroccoSociety Biopharma, Km 2, Route de Casa, B.P. 4569 Rabat, MoroccoLaboratory of Virology, Microbiology, Quality and Biotechnologies/Eco-toxicology & Biodiversity, Faculty of Sciences and Techniques-Mohammedia, University Hassan II of Casablanca, MoroccoInfectious bronchitis virus (IBV) is a major viral pathogen of commercial poultry, affecting chickens of all ages and causing major economic losses in poultry industry worldwide. Frequent points of mutations and recombination events in the S1 gene region, result in the emergence of new IBVs variants circulating in the form of several serotypes/genotypes that can be partially or poorly neutralized by current vaccines. IBV is well studied worldwide, nevertheless in African countries epidemiological and scientific data are poor and not updated. This review aims to give a current overview of IBV situation, to establish evolutionary relationship between the African variants and to list some of the potential measures to control IBV in Africa. Three S1 gene hypervariable regions were studied and compared to the reference genotypes/serotypes that found emerging in African regions. This comparison was based on phylogenetic trees, nucleotide and amino-acid sequence analysis. It clearly appears that IBV variants reported in Africa, display a low genetic relationship between them and with the majority of the reference strains emerging in neighboring countries, except the case of variants from Libya and Egypt that show a high relatedness. Also the Massachusetts serotypes were the most prevalent co-circulating with both serotypes, Italy02 type in Morocco and Qx-like genotype in South part of the African continent. In order to control the IBV variants in African regions, an efficient vaccination strategy program should be implemented.http://www.sciencedirect.com/science/article/pii/S2090989616300200Infectious bronchitis virusPhylogenetic analysisS1 geneHypervariable regions (HVR) |
| spellingShingle | Khadija Khataby Amal Souiri Yassine Kasmi Chafiqa Loutfi My Mustapha Ennaji Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions Journal of Basic and Applied Zoology Infectious bronchitis virus Phylogenetic analysis S1 gene Hypervariable regions (HVR) |
| title | Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions |
| title_full | Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions |
| title_fullStr | Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions |
| title_full_unstemmed | Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions |
| title_short | Current situation, genetic relationship and control measures of infectious bronchitis virus variants circulating in African regions |
| title_sort | current situation genetic relationship and control measures of infectious bronchitis virus variants circulating in african regions |
| topic | Infectious bronchitis virus Phylogenetic analysis S1 gene Hypervariable regions (HVR) |
| url | http://www.sciencedirect.com/science/article/pii/S2090989616300200 |
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