1. Infection Control Unit, Brest Teaching Hospital, Brest, France
2. Department of Microbiology, Brest Teaching Hospital, Brest, France
3. Department of Gastrointestinal Endoscopy, Brest Teaching Hospital, Brest, France
4. Inserm U1078 Génétique, Génomique et Biotechnologies, Brest Teaching Hospital, Brest, France
5. Université de Bretagne Occidentale, Brest, France