Since 2008, Dr. Sylvain Latour has been the head of the INSERM Laboratory of « Lymphocyte activation and susceptibility to Epstein Barr virus (EBV)” located at the Imagine Institute in Paris. He is an acknowledged expert on human primary immunodeficiencies associated with susceptibility to EBV infection and defects in T cell-mediated immunity. His team identified immunodeficiencies caused by mutations in CTPS1 (Martin et al., Nature 2014) and CD70 (Izawa, J. Exp. Med., 2017). He received le Prix Jaffé from the French Academy of Sciences and a prize from the French Society of Immunology.