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The ABAI was established in 1971 as a Conjoint Board of the ABIM and ABP. The internal medicine subspecialty existed from 1936-1971 and the pediatric subspecialty existed from 1944-1971. The ABAI is committed to working closely with its parent boards to maintain the highest educational and clinical standards in the specialty of allergy/immunology.

Beginning in 1989, new ABAI Diplomates receive certificates valid for ten years. Time unlimited certificates were issued prior to October 1, 1989.

The ABAI currently has 5,695 Diplomates who are board-certified in Allergy and Immunology. Please refer to the Performance History (pdf) for further details.