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Meningitis
Several different bacteria can cause meningitis. Meningococcal meningitis is of particular importance due to its potential to cause large epidemics. Bacteria are transmitted from person-to-person through droplets of respiratory or throat secretions from carriers. The disease can affect anyone of any age, but mainly affects babies, preschool children and young people. The most common symptoms are a stiff neck, high fever, sensitivity to light, confusion, headaches and vomiting. If untreated, meningococcal meningitis is fatal in 50% of cases and may result in brain damage, hearing loss or disability in 10% to 20% of survivors. While vaccines against meningococcal disease have been available for more than 40 years, to date no universal vaccine against meningococcal disease exists. The largest burden of meningococcal meningitis occurs in the meningitis belt, an area of sub-Saharan Africa, which stretches from Senegal in the west to Ethiopia in the east.
The most common symptoms of meningitis are a stiff neck, high fever, sensitivity to light, confusion, headaches and vomiting. Even with early diagnosis and adequate treatment, 5% to 10% of patients die, typically within 24 to 48 hours after the onset of symptoms.
Bacterial meningitis may result in brain damage, hearing loss or a learning disability in 10% to 20% of survivors. A less common, but even more severe (and often fatal), form of meningococcal disease is meningococcal septicaemia, which is characterized by a haemorrhagic rash and rapid circulatory collapse.
Meningococcal disease is potentially fatal and is a medical emergency. Admission to a hospital or health centre is necessary and appropriate antibiotic treatment must be started as soon as possible. Appropriate antibiotic treatment must be started as soon as possible, ideally after the lumbar puncture has been carried out if such a puncture can be performed immediately. If treatment is started prior to the lumbar puncture it may be difficult to grow the bacteria from the spinal fluid and confirm the diagnosis. However, confirmation of the diagnosis should not delay treatment. A range of antibiotics can treat the infection, including penicillin, ampicillin and ceftriaxone.
