Characterization of a Highly Virulent Infectious Bursal Disease Virus
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Very Virulent Infectious Bursal Disease Virus
The primary feature of vvIBDV is the ability to induce high mortality. Mortality ranges from 5% – 25% in broilers and 30% – 70% in layers. Surviving birds are severely affected with a high condemnation rate. vvIBDV induces clinical signs similar to Gumboro disease, which is induced by classical virulent strains of IBDV, except that the disease is more pronounced and acute in individual birds an...
full textSequence analysis of the VP1 gene in three very virulent Iranian infectious bursal disease virus strains
Infectious bursal disease (IBD) is a highly contagious disease of chickens caused by the infectious bursal disease virus (IBDV). This study was conducted to characterize three IBDV strains from Iran. A reverse transcriptase-polymerase chain reaction (RT-PCR) procedure was used to amplify a 715-bp fragment of the VP1 gene from IBDV strains. Amplified VP1 fragments of the three Iranian IBDV strai...
full textIsolation, Characterization and Standardization of New Infectious Bursal Disease Virus for Development of a Live Vaccine
Background and Aims: Infectious bursal disease (IBD) is an acute contagious viral disease of birds worldwide. The causative virus induces a persistent immune suppression following destroy B lymphocytes precursors in bursal lymphoid follicles. Vaccination is the main strategy for prevention of the disease in commercial poultry industry. Materials and Methods: To produce a live vaccine against th...
full textIsolation and characterization of a very virulent Infectious bursal disease virus from turkey.
Infectious bursal disease (IBD) is a highly contagious disease of chickens caused by Infectious bursal disease virus (IBDV). In turkeys, however, infection with classical virulent IBDV strains lead only to subclinical forms of the disease. We attempted to isolate IBDV from the bursa of turkey and characterize it. Amplification of a 743-bp fragment of VP2 gene by RT-PCR and restriction analysis ...
full textMolecular diagnosis and adaptation of highly virulent infectious bursal disease virus on chicken embryo fibroblast cell
Materials and Methods Infectious bursal disease (IBD) is a highly contagious disease of young chicken caused by infectious bursal disease virus (IBDV), characterized by immunosuppression and mortality generally at 3 to 6 weeks of age [1]. It is economically important to the poultry industry worldwide, due to increased susceptibility to other diseases and negative interference with effective vac...
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Journal title
volume 46.47 issue 1
pages 55- 63
publication date 1996-02-01
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