Common cause of epiglottitis is strep. pneumonoae or hib?

Common cause of epiglottitis is strep. pneumonoae or hib ?

What is the most common cause of epiglottitis?

Epiglottitis is usually caused by an infection with Haemophilus influenzae type b (Hib) bacteria. As well as epiglottitis, Hib can cause a number of serious infections, such as pneumonia and meningitis.