[目的]了解辽宁铁岭地区牛病毒性腹泻病毒（BVDV）、牛肠道病毒（BEV）的流行病学情况。[方法]对2021年6月至2022年6月辽宁铁岭地区不同奶牛场进行BVDV、BEV的发病情况调查,采集648 份病样进行抗原检测。[结果]辽宁铁岭地区不同奶牛场BVDV单一感染率为19.14%,BEV单一感染率为14.97%,BVDV/BEV混合感染率为8.64%,其中不同年龄牛群均存在不同程度的BVDV和BEV混合感染,犊牛混和感染率最低,为4.49%（4/89）;育成牛混和感染率为6.35%（12/189）;青年牛混和感染率最高,为13.01%（19/146）;成母牛混和感染率为9.38%（21/224）。[结论]本研究揭示出辽宁铁岭牛群感染BVDV、BEV的流行病学本底,为进一步防控BVDV与BEV感染提供了可靠的流行病学理论依据。建议对于饲养密度高、规模较大的奶牛场应当定期进行全面的流行病学调查,掌握BVDV、BEV的流行规律。

[Objective] To understand the epidemiology of bovine viral diarrhea virus （BVDV） and bovine enterovirus （BEV） in Tieling of Liaoning. [Method] From June 2021 to June 2022, the incidence of BVDV and BEV in different dairy farms in Tieling of Liaoning was investigated, and 648 samples were collected for antigen detection. [Results] The single infection rate of BVDV was 19.14%,the single infection rate of BEV was 14.97%,and the mixed infection rate of BVDV/BEV was 8.64% in different dairy farms in Tieling of Liaoning. Among them,there were mixed infections of BVDV and BEV in different ages,and the mixed infection rate of calves was the lowest,which was 4.49% （4/89）. The mixed infection rate of breeding cows was 6.35%（12/189）. The mixed infection rate of young cows was the highest,accounting for 13.01%（19/146）. The mixed infection rate of adult cows was 9.38%（21/224）. [Conclusion] This study revealed the epidemiological background of cattle infected with BVDV and BEV in Tieling of Liaoning,and provided a reliable epidemiological theoretical basis for further prevention and control of BVDV and BEV infection. It is suggested that dairy farms with high feeding density and large scale should conduct comprehensive epidemiological investigation regularly to master the epidemic law of BVDV and BEV.