Welcome to the 20th Annual Meeting of the Federation of Clinical Immunology Societies, FOCIS 2020, and the firstever virtual offering of THE meeting in translational immunology. The FOCIS 2020 Scientific Program is presented by world-renowned leaders from academia and industry presenting new developments in immune therapies, immune diseases, and developing technologies to measure and assess the immune system. Participants will share in best practices for data sharing and assay standardization and the rapid emergence of ever-evolving technologies, and the application of immunological discovery to the challenges facing our global community, that includes the COVID-19 pandemic. This year FOCIS celebrates its 20th anniversary. Since its inception in 2001, FOCIS has continued to strengthen its interdisciplinary approach to clinical immunology and broaden its scope in pursuit of our mission to improve human health through immunology. In our 20th year, FOCIS has 59 Member Societies and 1,000 individual members bridging multiple disciplines with a common focus on immune-mediated disease. The FOCIS Annual Meeting is the leading forum for researchers and clinicians from a multitude of specialties, along with industry and governmental representatives, to come together and share the latest breakthroughs. We value the participation of each of you who have contributed to FOCIS' success over the past 20 years, and we know that you will continue to empower the efforts of our community to secure the future of the field. We encourage you to get involved in FOCIS. Join FOCIS as a member and join our efforts to promote education, research, and clinical care through translational immunology. Please join me in extending our most heartfelt thanks to the members of the FOCIS 2020 Scientific Program Committee for their time, energy, and expertise that helped put together a world class line up of speakers and topics. We hope you enjoy the fruits of their labor-FOCIS 2020. Thank you, once again, for taking part in FOCIS 2020 and for helping to further the mission of FOCIS. Welcome to our virtual meeting! Sincerely,