[1] Colorado State Univ, Microbiol Immunol & Pathol, Ft Collins, CO 80523 USA
[2] Tulane Univ, New Orleans, LA 70118 USA
[3] Global Virus Network, Baltimore, MD USA
[4] Robert Koch Inst, Ctr Int Hlth Protect, Berlin, Germany
[5] Natl Inst Infect Dis, Dept Pathol, Tokyo, Japan
[6] Ctr Biol Mol Severo Ochoa, Madrid, Spain
[7] Univ Leuven, Rega Inst Med Res, Leuven, Belgium
[8] Univ Nacl La Plata, IBBM, Fac Ciencias Exactas, La Plata, Buenos Aires, Argentina
[9] Univ Autonoma Barcelona, Fac Vet, Dept Sanitat & Anat Anim, Bellaterra, Spain
[10] Univ Autonoma Barcelona, IRTA UAB, Ctr Recerca Sanitat Anim CReSA, Bellaterra, Spain
[11] Karolinska Inst, Stockholm, Sweden