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Pediatric Allergic and Immunologic Disorders

Allergy and asthma are among the most common health problems, with more than 50 million people afflicted with asthma, seasonal hay fever, or other allergy-related conditions each year.

Allergies can affect anyone, regardless of age, gender, race or socioeconomic class. Generally, allergies are more common in children; however, a first-time occurrence can happen at any age, or recur after many years of remission. There is a tendency for allergies to occur in families, although the exact genetic factors that cause it are not yet understood.

  • Food allergies are seen in 8% of children under age 6.
  • According to the Allergy and Asthma Foundation of America, if only one parent has allergies, chances are one in three that each child will have an allergy. If both parents have allergies, it is much more likely (7 in 10) that their children will have allergies.

According to the latest available statistics from the American Academy of Allergy, Asthma, and Immunology and the National Institute of Allergy and Infectious Diseases:

  • Allergic problems in the United States are the sixth leading common cause of chronic disease.
  • Approximately 20.3 million people in the United States have been diagnosed with asthma, with at least 6.3 million of them children under the age of 18.
  • Asthma is the most common cause of childhood hospitalizations under the age of 15.
Children's Team

Children's Team


Hemant Sharma

Hemant Sharma

Division Chief, Allergy and Immunology
Director, Food Allergy Program
Catherine Bollard

Catherine Bollard

Interim Executive Vice President & Chief Academic Officer, Children’s National Hospital
Interim Director, Children's National Research Institute
Interim Chair, Department of Pediatrics
Director, Center for Cancer and Immunology
Director, Program for Cell Enhancement and Technologies for Immunotherapy
Linda Herbert, Ph.D.

Linda Herbert

Director, Psychology Research and Clinical Services, Allergy and Immunology
Michael Keller

Michael Keller

Director, Translational Research Laboratory - CETI
Director, Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiency Disorders
Our Stories

Our Stories

Johan smiles from his hospital bed

Johan's Story

Johan, diagnosed with chronic granulomatous disease, underwent a bone marrow transplant and specialized T-cell infusion all before the age of 4.

Nina enters the pool

Nina's Story

Nina, an 18-year-old high school senior and competitive swimmer, is among a growing group of adolescents with a food allergy.



IMPACT DC Asthma Clinic

IMPACT DC Asthma Clinic is an award-winning pediatric asthma program in Washington, D.C., dedicated to improving asthma care and outcomes for children through clinical care, education, research and advocacy.

Allergy and Immunology

At Children’s National, children affected by allergies and complex immunologic disorders benefit from our specialists’ expertise, because our doctors treat children and only children with these conditions.