Journal of Antivirals & Antiretrovirals

Journal of Antivirals & Antiretrovirals
Open Access

ISSN: 1948-5964

Firas Al-bawi

Department of Virology, Al-Qasim Green University, Iraq

  • Research Article   
    Comparative Study of Phylogenetic Analysis of S1 Gene of Infectious Bronchitis Virus Isolates from Iraq with the Selected Strains (genebank)
    Author(s): Noor R Abady* and Firas Al-bawi

    Recently 2018, four strains of infectious bronchitis virus (IBV) were isolated from vaccinated and non-vaccinated broiler flocks from different chicken farms in different cities in Iraq. The pathogenic characters were assessed for the four IBV strains. Test chickens were infected by the four strains releasing an immune response. Noticeable results showed by cross neutralization assays which revealed that strains antigenically distinct from classic IBV strains of H120, M41, Conn, and Gray. Compared to H120 vaccine strain, short insertion, point mutation, and deletion occurred at many positions in the S1 protein of the four strains. Two of the four strains had the motif (HRRRR), which was considered identical to that of the epidemic IBV strains in Iraq. Another two strains had new motifs (HRLRR and RRYRR) emerged in the isolated strains. These Four strains were also genetically differen.. Read More»
    DOI: 10.35248/1948-5964.19.11.183

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