Key result
Experimental infection with the YN strain of avian infectious bronchitis virus caused severe respiratory and renal lesions and resulted in a 65% death rate in 30-day-old chickens.
Absolute Event Rate: 65% vs 0%
The YN strain of avian infectious bronchitis virus exhibits severe pathogenicity and broad tissue tropism in chickens, highlighting the need for updated vaccines in China.
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YN strain's high virulence in chicks signals poultry health risk; leaves open whether existing vaccines cover this variant.
Feng et al. (2012) studied Avian infectious bronchitis virus infection (n=40). IBV YN strain vs. Phosphate-buffered saline (PBS) was evaluated on Death rate. Experimental infection with the YN strain of avian infectious bronchitis virus caused severe respiratory and renal lesions and resulted in a 65% death rate in 30-day-old chickens.
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