Meningococcal Disease is a serious bacterial infection caused by the Neisseria meningitidis bacteria. It can lead to severe illnesses such as meningitis, which is an inflammation of the protective membranes covering the brain and spinal cord, and septicemia, a bloodstream infection. The disease spreads through respiratory droplets and close contact with an infected person. Symptoms of meningococcal disease can include fever, headache, stiff neck, and a rash. Early diagnosis and treatment are crucial, as the disease can progress rapidly and may result in severe complications or death. Vaccines are available to help prevent certain strains of this disease.