Received: 6 August 2020
Accepted: 1 October 2020
First Online: 8 October 2020
Ethics approval and consent to participate
: Because all the sera were collected from dogs for serological testing as part of routine diagnostic service, and the data analysis was performed retrospectively, no consent to participate in this study or approval by institutional ethics committee were required (only retrospective records were reviewed). No administrative permissions were required to access the raw data used in this study.
: Not applicable.
: The authors declare that they have no competing interests.