Characterization of S1 gene sequence variations of attenuated QX-like and variant infectious bronchitis virus strains and the pathogenicity of the viruses in specific-pathogen-free chickens

• Main Authors: Ismail, Mohd Iswadi, Tan, Sheau Wei, Bejo, Mohd Hair, Omar, Abdul Rahman
• Format: Article
• Language: English
• Published: Springer 2020
• Online Access: http://psasir.upm.edu.my/id/eprint/88146/1/ABSTRACT.pdf; http://psasir.upm.edu.my/id/eprint/88146/; https://link.springer.com/article/10.1007/s00705-020-04812-2

Besides the vaccine strains, the Malaysian variant (MV) and QX-like are the predominant IBVs detected on commercial poultry farms. These two virus strains are distinct based on genomic and pathogenicity studies. In this study, we determined the sequence of the S1 gene and compared the pathogenicity...