Received: 21 October 2019
Accepted: 19 November 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: All animal handling and sampling was realized in conformity with the French legislation on animal experimentation. For mammals, blood samples were collected in the context of the following approvals (APAFIS/project#): 334-2015031615255004_v4 and 333-2015031613482601_v4 (pigs), 3066-201511301610897_v2 (cattle), 03936.02 and 8613-2017012013585646_v4 (goats). Chicken immune cells were obtained from spleen sampled after slaughter (no need for animal experiment authorization).
: Not applicable.
: The authors declare that they have no competing interests.