The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness. It can also cause death in severe cases. The flu can affect your lungs when you have asthma. Having asthma puts you at risk of serious health problems from the flu.
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It is important to be wise about flu prevention, especially if you have asthma. For more information, download our handout: People with Asthma Need to Take Extra Precautions to Avoid the Flu