Funding for this research was provided by:
the Science and Technology Department of Jilin Province (20191102007YY)
Received: 13 March 2019
Accepted: 25 November 2019
First Online: 9 December 2019
Ethics approval and consent to participate
: The study was approved by Songyuan CDC. Informed consents were obtained from all the participants. For minors, parents or legal guardians provided consent on their behalf. Participants that tested positive for <i>Brucella</i> had received medical treatment from the CDC. All subjects gave signed, informed consent to participate in the study, which was approved by the Institutional Review Board (IRB), School of Public Health, Jilin University.
: Not applicable in this section.
: The authors declare that they have no competing interests