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    • Allergy and Asthma Foundation of America

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    Ten worst (U.S.) allergy cities revealed!

    Planning a trip to the U.S.? The Allergy and Asthma Foundation of America has released its list of the 100 worst American cities for spring allergies. According to the AAFA, rankings are based on the “scientific analysis” of three factors: pollen scores, number of allergy medications used per patient, and number of allergy specialists per patient. Here’s the ten worst: