Trained in internal medicine, and medical intensive care at the Paris University in France. Until January 2008, he was Head of the Intensive Care Unit and the Infectious Diseases Department, as well as President of the Infectious Control Committee, all at the Groupe Hospitalier Saint-Joseph in Paris. From January 2008 to January 2010, he has been medical director and Head of the Research and Safety Programme at the French Authority for Health (HAS). He is, since that time consultant, in particular for WHO. President of the World Alliance Against Antibiotic Resistance (WAAAR).