Yes, people with COPD are at greater risk for lung infections than healthy people. If one's cough and shortness of breath get worse or if one develops fever, one must see the doctor. These are signs that a lung infection is likely.
I have COPD for which I attended pulmonary rehabilitation several years ago and learned the proper techniques for taking my medications and exercises etc. Recently I feel that the medications are not working as well as they used to. What could be the reason?
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