Funding for this research was provided by:
Global Alliance for Livestock and Veterinary medicines ((UOZ-R34A0548A3))
Received: 6 January 2020
Accepted: 30 August 2020
First Online: 7 September 2020
Ethics approval and consent to participate
: Ethical clearance for the recombinant DNA experiments in this study was approved by the University of Zambia Biomedical Research Ethics Committee (UNZABREC) under Ref. 233-2019. Clearance for collection of samples and the field challenge trial was obtained from the Rwanda Agricultural Board.
: Not applicable.
: The authors declare that they have no competing interests.