Meningococcal disease is any infection caused by the bacterium Neisseria meningitidis, or meningococcus. One serious infection it can cause is meningococcal meningitis - inflammation of the lining around the brain and spinal cord. Meningococcal disease can become very serious, very quickly.
Meningitis versus Meningococcal Disease: there IS a difference Having meningitis doesn't always mean you have meningococcal disease. And having meningococcal disease doesn't necessarily mean you have meningitis. For more information on the different types of meningitis, please visit: