Food allergies, particularly allergies to peanuts and tree nuts, were a growing problem with no known cause, and they now affected 3-6 percent of children under the age of three.

成因仍然成谜的食物过敏，尤其是花生和坚果过敏，已成为日益严重的问题。3 - 6%的三岁以下儿童患有食物过敏症。

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Food allergies, particularly allergies to peanuts and tree nuts, were a growing problem with no known cause, and they now affected 3-6 percent of children under the age of three.

成因仍然成谜的食物过敏，尤其是花生和坚果过敏，已成为日益严重的问题。3 - 6%的三岁以下儿童患有食物过敏症。

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