[1] Inst Veille Sanit, Dept Malad Infect, F-94415 St Maurice, France
[2] Hop Robert Debre, Lab Associe Ctr Natl Reference E Coli & Shigella, Microbiol Lab, F-75019 Paris, France
[3] Inst Pasteur, Ctr Natl Reference E Coli & Shigella, Unit Biodivers Bacteries Pathogenes Emergentes, INSERM,U389, Paris, France
[4] Direct Departemental Serv Vet Bas Rhin, Strasbourg, France
[5] Ecole Natl Vet Lyon, Unite Microbiol Alimentaire & Previs, Marcy Letoile, France