The meningococcal vaccine can protect children from the dreaded meningitis, an infection of the brain. While there are two other types of vaccines designed to protect children from meningitis, the meningococcal vaccine is different because it prevents meningitis in adolescents as well as younger children. This vaccine is generally safe, but it has the potential for causing a rare but serious side effect. This section will explore all facets of the meningococcal vaccine.