Haemophilus

Somewhat similar to Neisseria, Haemophilus influenza also requires enriched media such as chocolate agar and capneic incubation. It has a capsule, and resides in the oral cavity and nasopharynx. They can colonize the upper respiratory tract through sneezing.
== Diseases (H. influenza) ==
=== Meningitis ===
3rd most common cause of bacterial meningitis, which is deadlier than viral meningitis. 
Prior to 1990, this was the #1 cause, because it was very common in children under 1.5 years old and had 90% mortality rate without treatment
Of the survivors, 25-35% chance of having some sort of neurological sequalae (consequence) including mental retardation.
Today, due to vaccination, the primary risk group are the elderly over 65. 
=== Otitis Media ===
2nd most common cause is Haemophilus. Children can get this after having a cold, and can lead to deafness. Results from blowing the nose wrong. 
=== Acute bacteria epiglotitis ===
Life-threatening disease in which the epiglottis can swell and cause suffocation for a child within 24 hours. 
=== Pneumonia ===
Secondary infection after the flu.
== Treatment ==
Ceftriaxone or cefotaxime are used for life threatning cases of meningitis and epiglotitis. For everthing else, there is sulfamethoxazole and trimethoprim, aka Bactrim. 
== Haemophilus aegyptius ==
Causes pink eye which is a form of conjunctivitis that is highly contagious. It can be spread through fomites and fingers. The eyelid will swell to the size of a golf ball but will not cause blindness. It is easily treated with tetracycline or a sulfonamide.
== Haemophilus ducreyi ==
An STD that causes chancroids, or soft chancres. 
Usually in warm climates, but not that common in USA.
Treatment: ceftriaxone or azithromycin.