Past research has been inconsistent in determining the relative effects of mouse droppings vs. cockroach exposure on asthma in children. According to a study being presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting in Atlanta, November 6-10, mice infestation is a stronger predictor of asthma symptoms in young children than exposure to cockroaches.

The study examined 49 children under the age of 4, residing in the Bronx, NY and concluded that mice infestation is a strong predictor of mouse-specific allergy and risk for flares of asthma in young, inner-city children — stronger than roach infestation and roach allergy.