| Immune Deficiency Foundation

Understanding primary immunodeficiency (PI)
Understanding PI
The more you understand about primary immunodeficiency (PI), the better you can live with the disease or support others in your life with PI. Learn more about PI, including the various diagnoses and treatment options.
Learn more about PI
Living with PI
Living with PI
Living with primary immunodeficiency (PI) can be challenging, but you’re not alone—many people with PI lead full and active lives. With the right support and resources, you can, too.
Learn more about living with PI
Get involved
Get involved
Be a hero for those with PI. Change lives by promoting primary immunodeficiency (PI) awareness and taking action in your community through advocacy, donating, volunteering, or fundraising.
Get involved today
Advancing research and clinical care
Advancing research and clinical care
Whether you’re a clinician, researcher, or an individual with primary immunodeficiency (PI), IDF has resources to help you advance the field. Get details on surveys, grants, and clinical trials.
View resource details

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Health Insurance & Primary Immunodeficiency Diseases: A 2014 Immune Deficiency Foundation Survey

November 18, 2016

Cover of the comparison report for the 2014, 2015, and 2016 insurance surveys.

Health insurance surveys fact sheets and report (2014, 2015, 2016)

November 18, 2016

Clayton Cowan and his brother celebrate.

Catching up with Clayton Cowan

September 30, 2016

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IDF Guide for Nurses Immunoglobulin Therapy for Primary Immunodeficiency Diseases, Fourth Edition

Ben crosses the Walk for PI finish line.

IDF Walk for PI’s impact on 3-year-old Ben and his teammates

IDF young adult advocating for change: Part two – This is just your prologue

February 22, 2016

David Vetter in his protective environment at Texas Children's Hospital in May 1979.

The story of David Vetter

February 04, 2016

Marty and Clayton Cowan.

Mom aimed to find joy in every moment during transplant

January 27, 2016

Thaddaeus Brown holds a baseball.

Each day is a gift for this mother and son

November 06, 2015

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Clinical Focus: Diagnostic Approaches to Antibody Deficiencies

October 14, 2015

Immune Deficiency Foundation
7550 Teague Road, Suite 220
Hanover, Maryland 21076

P: 410-321-6647