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What causes acute bronchitis?

Acute bronchitis, or chest cold, is a condition that occurs when the bronchial tubes in the lungs become inflamed. Causes of bronchitis include several types of viruses, most often:

  • respiratory syncytial virus (RSV)
  • adenovirus
  • influenza
  • parainfluenza
  • bacteria, in rare cases
  • pollutants (airborne chemicals or irritants)

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.