severe chronic obstructive pulmonary disease copd flare chronic obstructive pulmonary disease copd past year cough produces colored abundant sputum usual chronic obstructive pulmonary disease copd diagnosed gastroesophageal reflux work agriculture work mining sector cough traveled country last 4 weeks noticed wheezing sound exhale
bronchitis acute copd exacerbation / infection pneumonia bronchospasm / acute asthma exacerbation bronchiectasis
Acute COPD exacerbation / infection