The Immune Deficiency Foundation improves the diagnosis, treatment, and quality of life of people affected by primary immunodeficiency. Improving the diagnosis, treatment, and quality of life of people affected by primary immunodeficiency. The Immune Deficiency Foundation improves the diagnosis, treatment, and quality of life for every person affected by primary immunodeficiency.​ We foster a community that is connected, engaged, and empowered through advocacy, education, and research.