Meningococcal disease causes life-threatening meningitis and sepsis conditions. Infection usually mimics that of bacterial leptomeningitis, tuberculous meningitis, or viral encephalitis. Adenoviruses can also cause viral meningitis or encephalitis. Meningococcal meningitis is a form of bacterial meningitis. They are also able to cause sepsis, pneumonia or meningitis. Their use can prevent some cases of pneumonia, meningitis, and sepsis. In 1996, an outbreak of measles, cholera, and bacterial meningitis occurred in Nigeria. Left untreated this infection can cause complications such as gangrene, meningitis, and even death. The state is vulnerable to epidemics of malaria, diarrhea, Japanese encephalitis and meningitis. Sankara launched a mass vaccination program in an attempt to eradicate polio, meningitis and measles. Dexamethasone may be administered before antibiotics in cases of bacterial meningitis. Cysts and lesions can cause headaches, blindness, seizures, hydrocephalus, meningitis, and dementia. Neurological side effects like aseptic meningitis and encephalopathy have been observed. It does, though, give 80% of children protection against tuberculous meningitis and miliary tuberculosis. The symptoms of PAM are indistinguishable from acute bacterial meningitis.