The most common lung affection in children

Bronchiolitis is swelling and mucus buildup in the smallest air passages in the lungs which are called bronchioles. It is usually due to a viral infection. Bronchiolitis usually affects children under the age of 2. This affection can be sometimes severe.

Common causes are:

  • Adenovirus
  • Influenza
  • Parainfluenza
  • Respiratory syncytial virus
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Risk factors

  • Being around cigarette smoke
  • Being younger than 6 months old
  • Crowded conditions
  • Not being breastfed
  • Being born before 37 weeks of pregnancy