Abstract
Coxiella burnetii infection is an emerging/re-emerging public health problem affecting several countries worldwide. In India, the disease is mainly underdiagnosed, creating hindrances in its effective control. This study investigated the occurrence of C. burnetii among apparently healthy cattle and cattle with a history of reproductive disorders by both PCR and indirect-ELISA. A total of 731 clinical samples (serum: 531, and vaginal swabs as well as blood: 100 each) from 531 cattle were screened for coxiellosis. The serum, blood, and vaginal swabs each collected from 100 cattle with a history of reproductive disorders were screened using Com1-PCR, Trans-PCR, and indirect-ELISA. Conversely, serum samples obtained from apparently healthy cattle were exclusively screened using indirect ELISA. None of the samples tested could detect C. burnetii in PCR assays, while 13.37 % of serum samples were found to be seropositive in i-ELISA. Seropositivity noted among clinically healthy and those suffering from reproductive disorders were 12.76 % and 16 %, respectively, exhibiting a non-significant difference observed between these two categories. The obtained results suggested that the occurrence of coxiellosis did not differ significantly between clinically healthy animals and those with reproductive disorders; hence, in farms affected with C. burnetii infection, screening healthy and symptomatic animals is crucial to implement appropriate preventive measures.
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