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Breanne Hayes Haney, Allergy and Immunology Fellow-in-Training, School of Medicine, West Virginia University

EXPLAINED: Are twins allergic to the same things | Rare Historical Photos

If one has a reaction to a new food, is the other more likely to as well? BjelicaS/iStock via Getty Images Plus

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].


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