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Q&A: Is Asthma Contagious?
 

Asthma is NOT a contagious disease.

A lot of parents of children with asthma ask about this topic.

Asthma is not an infectious disease, and then it is not contagious.
The relationship between asthma and infectious diseases is like a trigger for asthma symptoms, that means, when a child or adolescent suffers asthma (genetic disease), common infections (cold, influenza, pneumonia...) can start asthma symptoms, causing more inflammation and narrowing of airways.

Besides, it is important to state that "bad cured cold" never drives to asthma. The fact that children with asthma have had a lot of cold during their first years of life is a way to express an special sensitivity of the airways.