Chronic cough, sputum and wheezing in winter and spring

Bronchial pneumonia is based on cough, sputum, or wheezing with an onset of 3 months each year for 2 consecutive years or more, and can exclude other cardiopulmonary diseases (such as tuberculosis pneumoconiosis asthma bronchodilator lung lung abscess chronic nasopharyngeal disease heart disease heart dysfunction, etc.). Bacterial pneumonia is mainly caused by pneumococcus, while viral pneumonia is mainly caused by adenovirus. Infants and young children have poor defensive functions and immature lung development. Therefore, the incidence rate is highest within the age of 2 years. It is mostly secondary to upper respiratory infections and acute infectious diseases, and is most common in winter and spring.

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