Sebastian Sylvestre MD
Allergy
Adults and Pediatrics
-
Understanding primary immunodeficiency (PI)
Understanding PI
The more you understand about primary immunodeficiency (PI), the better you can manage it. Learn about PI diagnoses and treatment options.
-
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.
-
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.
-
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.
Raul Villarreal MD
Allergy
Adults and Pediatrics
Rocket Pharma
Jenifer Peters PA-C
"Make your own path as you walk." | CEO Jorey Berry introduces medical director Dr. Paula Henao
March 25, 2026
Listen to podcast
Update: Foundation provides guidance amid changing vaccine recommendations
March 25, 2026
Read statement
Neurologist to speak on brain and immune system at PI conference
March 24, 2026
Read article
"Make your own path as you walk." | CEO Jorey Berry introduces medical director Dr. Paula Henao
March 23, 2026
Watch video
