The European Society for Immunodeficiencies (ESID) is a non for profit association that was created in 1994. ESID has been striving to improve the knowledge in the field of Primary Immunodeficiency (PID) by encouraging research, developing educational programs and fostering cooperation among all those involved in the diagnosis, treatment and management of these diseases.

ESID is organized in 7 working parties – Inborn Errors, Clinical, Education, Genetics, Registry, ESID Juniors, PID Care in Development.

ESID has invested in several activities such as

• ESID Biennial Congress
• ESID Summer School
• Endorsed activities​
• Awards and Grants
• ESID Registry
• ESID Guidelines