title: Spontaneous peritonitis caused by Neisseria meningitidis serogroup B.
mesh_terms: D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications; D008297:Male; D008589:Meningococcal Infections / Q000382:microbiology*; D008875:Middle Aged; D009345:Neisseria meningitidis / Q000302:isolation & purification*; D010538:Peritonitis / Q000150:complications / Q000382:microbiology*