Exposure to bacteria. Epiglotitis is often caused by a bacteria called hemophilus influenza'. It is bacterial, it is not an influenza organism. Rx requires usually a newer form of penicillin, steroids to rapidly shrink the inflammation and the soft tissue in the back of the throat that will block breathing when gets inflammed enough. C prior answer too.
Usually bacterium. Usually bacterial in origin. Hemophilus influenza was most common organism affecting children 3-6 years of age. With immunizations during early childhood for hemophilus epiglottitis now rare.Streptococcus pneumoniae, A,B,C now usually etiology. Swelling of epiglottis causing similar symptoms can be caused by urticaria, trauma physical or chemical, weak immune system, lack of adequate immunization.