Jean-Ralph Zahar is medical doctor specialized in internal medicine, intensive care unit and infectious diseases. He have a PhD of epidemiology.He works as an infection control practtioner. He is the head of the infection control unit of the Paris Seine Saint Denis hospital since September 2016. His research interests are, ESBL and MDRO infection, health acquired infection in ICU, and Antmicrobial stewardship. He is member of the IAME (INSERM) unit research.