Bronchitis can be caused by:
Acute Bronchitis causes:
Viral infections (common cold, influenza, COVID-19)
Bacterial infections (less common)
Exposure to smoke
Air pollution
Dust and chemical fumes
Chronic Bronchitis causes:
Long-term cigarette smoking
Secondhand smoke exposure
Industrial air pollution
Chemical irritants
Long-term airway irritation
Risk factors include:
Smoking
Older age
Weak immune system
Asthma or COPD
Frequent exposure to pollutants
Bronchitis can be prevented by:
Avoiding cigarette smoking
Staying away from secondhand smoke
Wearing protective masks in polluted environments
Washing hands regularly
Getting recommended vaccinations
Avoiding close contact with people who have respiratory infections
Maintaining good indoor air quality
Treating allergies and asthma properly
Early treatment of respiratory infections can reduce the risk of bronchitis and related lung complications.