Dear Friends and Colleagues, The 17th International Congress of Immunology (IUIS 2019) will be held from October 19 – 23, 2019 at the China National Convention Centre, Beijing, China. The Congress is co-organized by the International Union of Immunological Societies (IUIS) and the Chinese Society for Immunology (CSI). The scientific programme will be organized around the following core themes: Adaptive immunity Innate immunity Immunology and diseases Interventions Abstract submission deadline: 20 May, 2019 (CET 18.00) Early bird registration: until 20 June, 2019 More information, online registration and abstract submission on the website: https://iuis2019.org/