[Invasive meningococcal disease: increased risk and vaccination prevention for immunocompromised patients].

Background: The development of evidence-based guidelines for the prevention of infectious diseases through vaccination requires an understanding of populations that most likely may obtain an infection, severe illness or disease. Targeted vaccination recommendations are made possible by identifying risk groups, as is the case with meningococcal infections. Despite falling case numbers, meningococcal sepsis and meningococcal meningitis remain a major health problem.