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What is epiglottitis?
Acute epiglottitis is a rare, but potentially life-threatening bacterial infection of the epiglottis.
The epiglottis is a flap of cartilage that opens and closes the opening to the voice box (larynx) and windpipe (trachea).
Epiglottitis is most often caused by the bacteria Haemophilus influenzae type B (Hib).
This infection leads to rapid swelling of the epiglottis, which can fall backwards and block air from getting into the trachea and lungs. This leads to severe breathing difficulties or, in the worst case, stops breathing altogether (respiratory failure).
Epiglottitis can affect children and adults of any age and used to be most common in children between the ages of 2 and 6. Fortunately, epiglottitis is rare today because an effective vaccine against the Hib bacteria was introduced in 1985.



