Seroprevalence and risk factors of Chlamydia abortus infection in Tibetan sheep in Gansu province, northwest China.
Chlamydia abortus, an important pathogen in a variety of animals, is associated with abortion in sheep. In the present study, 1732 blood samples, collected from Tibetan sheep between June 2013 and April 2014, were examined by the indirect hemagglutination (IHA) test, aiming to evaluate the seroprevalence and risk factors of C. abortus infection in Tibetan sheep. 323 of 1732 (18.65%) samples were seropositive for C. abortus antibodies at the cut-off of 1:16. A multivariate logistic regression analysis was used to evaluate the risk factors associated with seroprevalence, which could provide foundation to prevent and control C. abortus infection in Tibetan sheep. Gender of Tibetan sheep was left out of the final model because it is not significant in the logistic regression analysis (P > 0.05). Region, season, and age were considered as major risk factors associated with C. abortus infection in Tibetan sheep. Our study revealed a widespread and high prevalence of C. abortus infection in Tibetan sheep in Gansu province, northwest China, with higher exposure risk in different seasons and ages and distinct geographical distribution.
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, China ; State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Si-Yuan
SY
Qin
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Ming-Yang
MY
Yin
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, China ; State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Wei
W
Cong
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Dong-Hui
DH
Zhou
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, China ; State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Xiao-Xuan
XX
Zhang
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, China.
Quan
Q
Zhao
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Xing-Quan
XQ
Zhu
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, China.
Ji-Zhang
JZ
Zhou
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, China.
Ai-Dong
AD
Qian
D000022:Abortion, Spontaneous / Q000097:blood* / Q000453:epidemiology / Q000209:etiology*; D000818:Animals; D002681:China; D002690:Chlamydia Infections / Q000097:blood* / Q000150:complications* / Q000453:epidemiology; D005260:Female; D011247:Pregnancy; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D034561:Sheep, Domestic / Q000097:blood* / Q000382:microbiology