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Bronchiolitis Causes & Risks


This infection is caused by several kinds of viruses. It easily spreads from person to person in the same way a common cold does. This most often happens when an infected person coughs or sneezes. Droplets of moisture are released into the air. When a noninfected person breathes the air they can become infected.

Risk Factors

Bronchiolitis can affect anyone, but it most often strikes:

  • Children under the age of two, especially between 3-6 months old
  • During the winter months
  • Adults most at risk are those who are:
    • Immunocompromised
    • Exposed to toxic fumes
  • Children most at risk are those who:
    • Were never breastfed
    • Were born prematurely
    • Are exposed to tobacco smoke
    • Are often in groups of children (as in day care) or live in crowded conditions

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright © 2023 EBSCO Publishing All rights reserved.

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