<unk>  is a form of bacterial meningitis caused by the<unk>  influenzae bacteria. It is usually (but not always) associated with<unk>  influenzae type b. Meningitis involves the inflammation of the protective membranes that cover the brain and spinal cord.<unk>  is characterized by symptoms including fever, nausea, sensitivity to light, headaches, stiff neck, anorexia, and seizures.<unk>  can be deadly, but antibiotics are effective in treating the infection, especially when cases are caught early enough that the inflammation has not done a great deal of damage. Before the introduction of the Hib vaccine in 1985,<unk>  was the leading cause of bacterial meningitis in children under the age of five. However, since the creation of the Hib vaccine, only two in every 100,000 children contract this type of meningitis. Five to ten percent of cases can be fatal, although the average mortality rate in developing nations is seventeen percent, mostly due to lack of access to vaccination as well as lack of access to medical care needed to combat the meningitis.
Haemophilus meningitis
Herpesviral meningitis
Lemierre's syndrome
Eastern equine encephalitis
Fungal meningitis
Mollaret's meningitis
Tick-borne encephalitis
Diphtheria