Key result
Molecular surveillance of 250 suspected chicken flocks in Iran revealed that 67.6% experienced infection with infectious bronchitis virus variants genetically distinct from current vaccine strains.
Observational (n=2,500)
The study identifies multiple IBV variants circulating in Iranian chicken flocks that are genetically distinct from current vaccine strains, highlighting the need for updated preventative measures.
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High prevalence of vaccine-mismatched IBV variants suggests inadequate current protection in Iranian flocks; leaves open need for updated vaccines pending controlled studies.
Hosseini et al. (2015) conducted an observational in Infectious bronchitis virus (IBV) (n=2,500). Infectious bronchitis virus (IBV) variants vs. Vaccine strains (H120 and 4/91) was evaluated on Infection with an IBV variant unrelated to vaccine strains. Molecular surveillance of 250 suspected chicken flocks in Iran revealed that 67.6% experienced infection with infectious bronchitis virus variants genetically distinct from current vaccine strains.
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