25 Worst Major Cities for Allergies in 2020

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23. Orlando

Allergen Sensitization Index – 616

Orlando is one of the top 5 cities for house dust mites allergies. Percentage of patients who are sensitized to house dust mites  were a whopping 29%. Mold spores are common in the Orlando year in the months of February to April, and August to October. The humid climate also contributes to allergen producing conditions. 

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