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If you have asthma, even a mild cold can lead to wheezing and tightness in your chest. Colds and the flu are among the most common causes of asthma flare-ups, especially in young children.

Regular asthma medications may fail to relieve asthma symptoms associated with a cold or the flu. Also, asthma symptoms caused by a respiratory infection may last for several days to weeks.

There's no sure way to keep yourself or your child from getting a cold or the flu. But taking steps to avoid getting sick — and taking the right steps when you do — can help.