The epidemiology and pathological changes about the case of naturally infected by nephropathogenic infectious bronchitis viruses were examined.
鸡自然发生的鸡肾病变型传染性支气管炎病例，进行了流行病学及病理变化方面的检验。
Infectious bronchitis: Infectious bronchitis occurs most often during the winter and is most often caused by viruses.
感染性支气管炎；感染性支气管炎多在冬季发生，多数由病毒引起。
Infectious bronchitis: Infectious bronchitis occurs most often during the winter and is most often caused by viruses.
感染性支气管炎；感染性支气管炎多在冬季发生，多数由病毒引起。
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