Meningitis is a disease caused by inflammation of the protective membrane of the brain and spinal cord, called the meninges. Meningitis is usually caused by a bacterium or virus, but in less common cases, meningitis can be caused by certain drugs or injuries. The most common way meningitis is contracted is through bacteria or viruses that infect the body and spread from the bloodstream to the meninges via the cerebrospinal fluid. Viral meningitis is more common and is usually not serious. In severe cases, viral meningitis can cause prolonged fever or seizures. On the other hand, bacterial meningitis is very serious and must be treated immediately to avoid brain damage or even death. Both types of meningitis share the same symptoms, which makes it very important to see a doctor to determine the severity of the disease. The severity of meningitis depends on the person's age, health status and also the cause. Meningitis can range from very mild to very severe. The probability of death is higher in those who have suffered an attack in the first 24 hours, ...