[1] ANSES INRA ENVA, UMR Virol 1161, F-94704 Maisons Alfort, France
[2] Univ Paris Est, Ecole Natl Vet Alfort, Unite Pathol Betail, F-94704 Maisons Alfort, France
[3] ANSES, Direct Sci Labs, F-94704 Maisons Alfort, France
[4] ANSES, Lab Lyon, Unite Epidemiol, F-69364 Lyon 7, France
[5] Minist Agr, Direct Gen Alimentat, F-75732 Paris 15, France
[6] ID VET, F-34070 Montpellier, France
[7] INRA, Unite Virol Immunol Mol, F-78350 Jouy En Josas, France
[8] ANSES, Lab Lyon, Unite Virol, F-69394 Lyon 7, France