[1] ARS, Anim Dis Res Unit, USDA, Pullman, WA USA
[2] Washington State Univ, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
[3] Washington State Univ, Paul G Allen Sch Global Anim Hlth, Pullman, WA 99164 USA
[4] Univ Washington, Sch Med, Dept Comparat Med, Seattle, WA 98195 USA
[5] USDA, Anim & Plant Hlth Inspect Serv, Eagle Pass, TX USA
[6] Univ Maryland, Sch Med, Inst Genome Sci, Baltimore, MD 21201 USA
[7] Washington State Univ, Vet Clin Sci, Pullman, WA 99164 USA
[8] St Georges Univ, Sch Vet Med True Blue, Dept Large Anim Med & Surg Physiol & Pharmacol, St Georges, Grenada
[9] USDA, Anim & Plant Hlth Inspect Serv, Natl Vet Serv Labs, Ames, IA USA
[10] Nairobi Univ, Dept Zool, Nairobi, Kenya
[11] USDA, Anim & Plant Hlth Inspect Serv, Surveillance Preparedness & Response Serv, Ft Collins, CO USA
[12] Univ Maryland, Sch Med, Dept Microbiol & Immunol, Baltimore, MD 21201 USA