Isolation of a variant infectious bronchitis virus in Australia that further illustrates diversity among emerging strains

Emergence of variant avian infectious bronchitis virus in India

Background: Infectious bronchitis virus (IBV) is the etiological agent of an acute and highly contagious disease. Infectious bronchitis (IB) affects chicken of all ages and poses major economic loses to the poultry industry worldwide. The continuous evolution of the spike protein (S1) of IBV is responsible for the prevalence of many serotypes/genotypes around the world. Multipl...

Isolation and Characterization of New Variant Strains of Infectious Bronchitis Virus in Northern Egypt

| Infectious bronchitis virus (IBV) is the causative agent of an acute and highly contagious disease affecting the respiratory, renal and/or reproductive systems of chicken called infectious bronchitis disease. Controlling of this disease needs continuous identification of the circulating strains and genotypes. In the present study, six IBV samples were isolated from different poultry farms loc...

Isolation and Identification of Infectious Bronchitis Virus from Commercial Chickens

Evolution of New Variant Strains of Infectious Bronchitis Virus Isolated from Broiler Chickens

In order to investigate the prevalence and track the genetic evolutions of the circulated infectious bronchitis virus (IBV) strains and their prevalence in Assiut, Egypt, partial S1 gene amplification and sequencing were done during 2013-2014. Three infectious bronchitis virus (IBV) strains with the following accession numbers (KR003438, KR003439 and KR003440 respectively) were detected from 21...

Live attenuated nephropathogenic infectious bronchitis virus vaccine provides broad cross protection against new variant strains.

Infectious bronchitis virus (IBV) infections cause great economic losses to the poultry industry worldwide, and the emergence of new variant strains complicates disease control. The present study investigated the genetic and protectotypic features of newly emerged Korean IBV strains. A phylogenetic analysis showed that several recent isolates formed 2 different clusters (new cluster 1 and 2), w...