INFLUENZA MENINGITIS - A form of meningitis caused by the bacterium Hemophilus influenza. Inflammation of the membranes (meninges) covering the brain and spinal cord can result after infection with this organism. Influenza meningitis occurs most frequently in children under 5 years old. Onset may be sudden or occur more slowly after an upper respiratory infection. Symptoms and features include fever, headache, stiff neck, photophobia, and mental status changes. Infants may be irritable and exhibit poor feeding associated with fever. Severe cases may progress to seizures, coma, and death. Treatment always includes high dose systemic antibiotics and corticosteroids may also be used in some select cases.