What you may not know about peanut allergy

If your child has a peanut allergy s/he could react to soy as well. The news of this cross-reactivity was eye-opening and I've researched further and contacted my allergist. Everything points to eliminating all soy from her diet.

I copied the following from www.allergyware.com

How could soy cause an allergic reaction in my child with peanut allergy?In scientific terms, soybean allergens are “homologous” to known peanut allergens and can be recognized by 44% of peanut-allergic patients.
What that means is that a child with a peanut allergy can have an allergic reaction and even go into anaphylaxis after eating soy. Because this cross-reactivity is rarely mentioned in the press, many parents are unaware of the potential health risks that soy may present to children with peanut allergies.
What are the Signs of a Cross-Reaction to Soy?According to Ingrid Yman, PhD of the Swedish National Food Administration, these deaths initially appear as an asthma attack, with no or very mild symptoms for the first 30-90 minutes after the consumption of food containing soy. Then, the children suffer fatal asthma attacks.
What Can I Do to Protect My Child with Peanut Allergy?According to Dr. Yman, PhD of the Swedish National Food Administration, “If your child is allergic to peanuts, you should consider eliminating soy as well as all peanuts from your child’s diet, even if your child has never reacted poorly to soy in the past. Some sensitive children have “hidden” soy allergies that manifest for the first time with a severe – even fatal – reaction to even the low levels of “hidden” soy commonly found in processed food products. Those at the highest risk suffer from asthma as well as peanut allergy.”
The Swedish National Food Administration study analyzed severe food allergy reactions of children that died after consuming soy. These children had known allergies to peanuts but not to soy.
What products contain soy?Soy can be found in soy milk, tofu, soy sauce, baby formula and other soy products.
Soy is also used in many processed foods, as soy lecithin, soy lecithin, soybean oil and other soy derivatives.