Laryngotracheobronchitis is caused most commonly by:
Correct Answer: Parainfluenza virus
Description: Laryngotracheobronchitis is the most common infectious cause of airway obstruction in children, usually occurring between the ages of 6 months and 3 years. It is a viral infection most commonly caused by the parainfluenza virus, although numerous other organisms have been repoed.
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ENT
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