Yin M Y, Tan Q D, Qin S Y, Hu L Y, Liu G H, Zhou D H, Zhu X Q
BSc in Veterinary Science, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, China; ; Department of Parasitology, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, China;
BSc in Veterinary Science, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, China;
Iran J Vet Res. 2015 Spring;16(2):210-2.
The objective of the present investigation was to determine the seroprevalence of Coxiella burnetii infection in free-range yaks in China. A total of 552 serum samples were collected from yaks in Gansu province, northwest China between April 2013 and January 2014, and antibodies against C. burnetii were evaluated using enzyme-linked immunosorbent assay (ELISA). Overall, 13.59% (75/552, 95% CI: 10.73-16.45) of the examined animals were positive for C. burnetii antibodies. There was no significant difference in C. burnetii seroprevalence between female yaks (13.78%, 95% CI: 10.36-17.19) and male yaks (13.13%, 95% CI: 7.89-18.36) (P>0.05). Coxiella burnetii seroprevalence in yaks in different age groups ranged from 10.88% to 15.26%, but the difference was not statistically significant (P>0.05). Coxiella burnetii seroprevalence in yaks sampled in different seasons ranged from 12.06% (autumn) to 18.33% (summer), but the difference was not statistically significant (P>0.05). This is the first report of C. burnetii seroprevalence in free-range yaks in China, indicating the need for measures to be taken to control C. burnetii infection in free-range yaks in China.
本研究的目的是确定中国放养牦牛中伯氏考克斯体感染的血清阳性率。2013年4月至2014年1月期间，从中国西北部甘肃省的牦牛中总共采集了552份血清样本，并使用酶联免疫吸附测定（ELISA）评估了针对伯氏考克斯体的抗体。总体而言，13.59%（75/552，95%置信区间：10.73 - 16.45）的受检动物伯氏考克斯体抗体呈阳性。雌性牦牛（13.78%，95%置信区间：10.36 - 17.19）和雄性牦牛（13.13%，95%置信区间：7.89 - 18.36）之间的伯氏考克斯体血清阳性率无显著差异（P>0.05）。不同年龄组牦牛的伯氏考克斯体血清阳性率在10.88%至15.26%之间，但差异无统计学意义（P>0.05）。不同季节采集的牦牛样本中伯氏考克斯体血清阳性率在12.06%（秋季）至18.33%（夏季）之间，但差异无统计学意义（P>0.05）。这是中国放养牦牛中伯氏考克斯体血清阳性率的首次报告，表明需要采取措施控制中国放养牦牛中的伯氏考克斯体感染。
