[1] Oniris Ecole Natl Vet Agroalimentaire & Alimentat, Unite Malad Reglementees Zoonoses, F-44307 Nantes, France
[2] Univ Nantes, CNRS, INSERM, UMR 892,UMR 6299,IRTUN Quai Moncousu, F-44007 Nantes, France
[3] CHU Bocage, Ctr Natl Reference Virus Enter, Lab Virol Serol, F-21070 Dijon, France