A full-length S1 gene sequencing of a novel emerged GI-19 and GI-23 lineages of Infectious bronchitis virus currently circulating in chicken flocks in upper Egypt reveals marked genetic diversity and recombination events

Abstract excerpt

BACKGROUND: Infectious bronchitis virus (IBV) is a highly contagious evolving pathogen that causes respiratory, urinary and reproductive symptoms; threatening the poultry industry globally. METHODS: During this study, 90 tissue specimens were collected from various poultry flocks of seven Upper Egypt governorates from 2023 to 2024 for genetic characterization. RESULT: Typical IBV lesions of the inoculated embryos...

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