He had high responsabilities within:

• Head of medical department in a University hospital
• Institut Pasteur, Paris
• College of the French Professors of infectious and tropical diseases (CMIT)
• National Immunization technical advisory group (CTV), France
• French Drug Agency (ex-AFSSAPS, ANSM)
• Superior Council for Public Hygiene of France
• High Council for Public Health (HCSP)
• INSERM (French National Institute for Health and Medical Research).
• National council of universities
• European Technical Advisory Group of Experts on Immunization (ETAGE), World Health Organization.