
RESPIRATORY TRACK INFECTION
Chronic Respiratory Disease Chronic Respiratory Diseases (CRD). Diseases of the airways and other lung and lung structures. Chronic obstructive pulmonary disease (COPD), asthma, occupational lung disease and pulmonary hypertension are the most common. In addition to tobacco smoke, other risk factors include: Air pollution, occupational chemicals, dust and frequent respiratory infections in childhood. CRDs cannot be cured. However, a variety