We had the pleasure of hosting Dr. Yasmine Belkaid, from the National Institute of Health (NIH) to present the keynote address on homeostatic immunity to the microbiota. We also heard from four new faculty members of IMP, Dr. Julie Blander, Dr. Virginia Pascual, Dr. Steve Josefowicz, and Dr. Juan Cubillos-Ruiz. Students and post-docs gave talks ranging from Mycobacterium tuberculosis pathogenesis, immune responses to viral infections, auto-immunity, tumor immunology, and mucosal immunology.