Teaching epidemiology, hygiene, health services organization and community medicine at the Medical School of the TurinUniversity. Head of the Regional Unit of Epidemiology and Health Promotion in the Piedmont Region. Certified occupational health and public health physician and epidemiologist. Research interests in the fields of epidemiology of occupational risks, environmental risks, inequalities in health and in health systems.

Thomas holds a PhD in virology from The Rockefeller University in New York (USA) and received his Master's degree in biology from the Albert-Ludwigs-Universität Freiburg in Breisgau (Germany) prior to his work in the United States. After postdoc research activities at The Rockefeller University, he returned to his native Luxembourg in 2011 to take up a post as a post doc researcher at the Luxembourg Institute of Health (LIH) where he established a research team working on hepatitis C virus with a focus on antiviral drug targeting and testing. He then moved on to work as a consultant for Deloitte, developing the Healthcare & Life Sciences activities while working in various countries across Europe. Then, Thomas spent 5 years as head of Life Sciences Sector at the national innovation agency (Luxinnovation) in Luxembourg, where he worked on the research and economic development of the life sciences sector in close collaboration with the government, research institutions and industry. During that time, he also assumed the role of manager of the Luxembourg BioHealth Cluster, reuniting the Luxembourg life sciences actors. Thomas is now, since September 2017 working at the Directorate of Health (Ministry of Health) where he is in charge of coordination, strategic development, digital health and international relations and acts as a lecturer at the University of Luxembourg. As a member of the Luxembourg COVID-19 crisis cell, Thomas has been in charge of the national testing strategies (diagnostic and large scale testing). Thomas assumes the co-lead of the national digital health taskforce for the transformation of the healthcare sector. On an international level, Thomas assumes the roles of a board member of the ECDC (European Centre for Disease Prevention and Control), the European Health Emergency Preparedness and Response Authority (HERA) and the Standing Committee of the Regional Committee (SCRC) of WHO Europe.

Ms. Sandra Gallina is Director-General - Directorate General for Health and Food Safety (DG SANTE). Sandra Gallina joined the European Commission in 1988. She is today Deputy-Director General for HEALTH. Before joining DG SANTE, between 2018 and 2020 she was Deputy Director General for TRADE. Between 2014 and 2018 she was Director for DG TRADE Directorate D "Sustainable Development; Economic Partnership Agreements - African, Caribbean and Pacific; Agri-food and Fisheries". Sandra Gallina was also the EU chief negotiator for the EU-MERCOSUR Free Trade Agreement. Between 2001 and 2009 she was the EU Lead Negotiator for Non-Agricultural Market Access in the WTO Doha Round and in that capacity, she defined and presented EU policy for the Doha Development Agenda on non-agricultural market access negotiations.Before joining DG TRADE, she worked in the Directorate General for Taxation and Customs Union (DG TAXUD) at the end of the 1990s.