The Sanofi Pasteur team dedicated to the dengue vaccine is more than 1000 people strong across multiple functions necessary to bringing the vaccine to life, including scientific, medical, manufacturing and many others.  Meet our leadership: 

Jean-Jacques Bresson - Head of Dengue Vaccine Program, Sanofi PasteurJean-Jacques Bresson, Head of Dengue Vaccine Program, Sanofi Pasteur

Jean-Jacques Bresson is Head of the Dengue Vaccine program at Sanofi Pasteur where he leads a team of more than 1000 people in the launch and rollout of the first dengue vaccine in dengue-endemic areas around the world.  He began this role following two years as the Chief Commercial Officer for the same program.  Under his leadership, the dengue company at Sanofi Pasteur will contribute to increase the awareness of dengue and work to make the dengue vaccine available in endemic countries through collaboration with local health authorities and health care providers.

He has worked at Sanofi for nearly than 20 years, first joining Pasteur Merieux Connaught in South America in 1995. After his first assignment as Marketing Manager & Project Leader in Colombia, he worked in a venture capital company and as an entrepreneur in several small companies, before re-joining the Sanofi Pasteur team in Lyon in 2002 as Business Operation Manager for Asia. In 2004 he became General Manager in the Philippines and then in Mexico. His experiences cover other businesses in the Sanofi Group, in both strategic and operational positions in Europe and Asia. Just prior to his role as Chief Commercial Officer for dengue, he served as General Manager, Sanofi for Thailand/Myanmar.

Jean-Jacques Bresson graduated from Lyon Business School with a major in Finance.

Cesar MascarenasDr. Cesar Mascareñas, Head of Dengue Global Medical Affairs

Dr. Cesar Mascareñas, a physician specialized in pediatric infectious diseases, is Head of Dengue at Sanofi Pasteur Global Medical Affairs.

Dr. Mascareñas obtained his MD at the Universidad de Monterrey (Mexico, 1990), pediatric specialization at the Instituto Nacional de Pediatría (Mexico, 1993) and pediatric infectious diseases at Instituto Nacional de Pediatría (1994). He continued his career as part of the faculty at the Hospital Infantil Privado, Universidad Nacional Autónoma de Mexico, as post-graduate professor of Pediatrics with focus on infectious diseases. In 1999, Dr. Mascareñas joined Sanofi Pasteur where he primarily supported the Medical Direction part time. In 2000, he was offered a full time position as medical Director for Mexico. During his term he was involved in the introduction of influenza, pneumococcal 23 valent and IPV-acP containing vaccines in the Mexican National Immunization program. In 2007 Dr. Mascareñas was promoted to the position of Public Health Director for Latin America where he developed and executed a public policy strategy to successfully maintain Sanofi Pasteur as the public health partner of choice for Latin American countries. In 2011, Dr Mascareñas was offered the position as Medical and Scientific Director for Latin America at Sanofi Pasteur. In this position he consolidated a New Medical Governance Model for the region and was also involved in supporting the introduction of several vaccines (IPV-acP containing vaccines, influenza, Tdap and Meningococcus) in different Latin American countries.

Dr. Mascareñas was appointed to his current position in December 2015. He is in charge of coordinating the Dengue Global Medical Department that is accountable, among other activities, for the development of clinical research studies of the dengue vaccine and medical communication with different internal and external stakeholders, fundamental roles for the launch and the implementation of the vaccine at the global level.

Isabelle Depauw-Mercier Isabelle Depauw-Mercier, Neuville-sur-Saône Site Head and Directeur Général adjoint of Sanofi Pasteur NVL

Isabelle Depauw-Mercier holds a PhD in Pharmacy, a Master in Management (IAE Caen-Coventry) and a DU in Vaccinology from the Institut Pasteur de Paris. Isabelle is an experienced professional in the production and quality control of biological products. Isabelle has vast experience in industrial development. After joining the group in 1993, she worked successively in Industrial Development, Quality Control and Quality operations. Since 2008, Isabelle has held various responsibilities in Research and Development and Industrial Operations at the Sanofi Pasteur site in Marcy L’Etoile.