1. Université de Paris, INSERM, IAME, F-75018, Paris, France
2. Equipe de Prévention du Risque Infectieux, APHP, Hôpital Bichat, F-75018, Paris, France
3. Department of Infectious Diseases, Azienda Ospedaliero-Universitaria Policlinico of Modena, Modena, Italy