Tran Ngoc Bich * , Nguyen Cam Loan and Nguyen Phuc Khanh

* Corresponding author (tnbich@ctu.edu.vn)

Main Article Content

Abstract

Infectious bronchitis is a high contagious disease of chicken caused by gamma coronavirus. The disease was characterized by respiratory, renal, urogenital, and alimentary infections. Different strains of IBV may show variable tissue tropisms. For example, the classical strains of Massachussetts serotype (M41) targeted in respiratory and reproductive system while variant serotypes including QX, 793/B, D388 have been detected in respiratory, reproductive, alimentary system and kidney. Because the evolution and mutation of IBV have contributed to the emergence of new genotypes of IBV, the outbreak of IB still occurred in the vaccinated flocks. Therefore, diagnosis of IB plays an important role for limiting the effects caused by IBV infection. Available laboratory tests for diagnosis of IBV include virus isolation, electron microscope, immunohistochemistry, serological tests (virus neutralization, haemagglutination inhibition, enzyme-linked immunosorbent assay –ELISA-, agar gel immunodiffusion), genotype identification (RT-PCR, genome sequencing [using NGS Miseq]). 
Keywords: Infectious bronchitis virus (IBV), Coronavirus, chicken, RT-PCR

Article Details

References

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