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Emergence of novel QX-type IBV in China: molecular insights into unique S protein cleavage sites, antigenic drift,

Jiaqi Zhang1, Jianjie Ren1, Wenqi Wu1

  • 1Guangdong Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Key Laboratory of Zoonoses Prevention and Control (Guangdong Province), Key Laboratory of Animal Vaccine Development (Ministry of Agriculture), College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.

BMC Veterinary Research
|December 30, 2025
PubMed

Keywords:
Antigenic variationCleavage siteInfectious bronchitis virusPathogenicityQX genotypeRecombination

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