New research points out the need for more allergen reduction guidelines.

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In a study presented at AAAAI 2019, 440 of 718 (61%) patients had a diagnosis of asthma, and a total of 341 out of 718 (47.5%) patients were sensitized to at least 1 of the 3 allergens studied.

In clinical trials examining asthma outcomes, a wide variety of interventions designed to reduce allergens have been studied, but the likelihood of asthma has been shown to increase with the greater the complexity of the environment.

From June 2015 through December 2016, investigators conducted a retrospective chart review of 718 patients ages 1-90 years old seen at a Chicago public hospital who underwent in-vitro aeroallergen testing. Patient demographics, aeroallergen sensitivities, physician-diagnosed asthma, and asthma severity included the data collected, which was analyzed using chi-square tests.