1. Institut Pasteur, Biology of Infection Unit
2. Institut national de la santé et de la recherche médicale (INSERM) U1117
3. National Reference Centre and World Health Organization (WHO) Collaborating Centre for Listeria
4. Division of Infectious Diseases and Tropical Medicine, Institut Imagine
5. Department of Adult Radiology, Necker-Enfants Malades University Hospital, Paris Descartes University, Sorbonne Paris Cité, Assistance Publique–Hôpitaux de Paris, France