Two genotypes of infectious bronchitis virus are responsible for serological variation in KwaZulu-Natal poultry flocks prior to 2012
Onderstepoort Journal of Veterinary Research
| Field | Value | |
| Title | Two genotypes of infectious bronchitis virus are responsible for serological variation in KwaZulu-Natal poultry flocks prior to 2012 | |
| Creator | Knoetze, Adrian D. Moodley, Niloshni Abolnik, Celia | |
| Description | This study describes the isolation, serotyping and genotyping of 54 infectious bronchitis virus (IBV) cases predominantly in KwaZulu-Natal and compared to several isolates from other South African provinces between 2011 and 2012 and several historic isolates. The results indicate the division of isolates into two different genotypes of IBV within the province, Massachusetts (Mass)-like and QX-like. The IBV Mass-like genotype was the most prevalent and was detected in 79% of the full spike protein S1 gene sequences. Variation up to 22.3% was detected within local Mass-type strains, supporting the hypothesis that multiple IBV serotypes may co-circulate in the same region simultaneously. Additionally, more conservation was observed amongst Mass serotypes versus QX-like serotypes, implying that vaccine use can influence the variability within the IBV population; this is deduced from the fact that the only live vaccine registered for use in South Africa at the time of the study was of Mass origin and no QX-like vaccines were available for use. This study offers the first published consolidation of IBV isolates from an area of South Africa and identifies variation within the IBV population of the broiler flock within the study area over a 2-year period. | |
| Publisher | AOSIS | |
| Date | 2014-09-09 | |
| Identifier | 10.4102/ojvr.v81i1.769 | |
| Source | Onderstepoort Journal of Veterinary Research; Vol 81, No 1 (2014); 10 pages 2219-0635 0030-2465 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://ojvr.org/index.php/ojvr/article/view/769/1106
https://ojvr.org/index.php/ojvr/article/view/769/1107
https://ojvr.org/index.php/ojvr/article/view/769/1109
https://ojvr.org/index.php/ojvr/article/view/769/1098
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