The objective of the "Immunity, inflammation, infection" subprogram is to provide students with quality training enabling them to pursue a PhD program in the field of immunology, inflammatory and infectious diseases. The training is based on the topics developed in the research units of the University of Lille: (i) the molecular and cellular dynamics of the pathogenic-host microorganism interactions, (ii) the immune processes involved in infectious pathologies , (iii) chronic inflammatory diseases, and (iv) the relationships between the immune system and the environment (microbiota, pollution, sport, food, etc.). Current therapeutic strategies based on the manipulation of molecular and immune effectors will be presented.