title: Nasopharyngeal carriage of meningococci.
mesh_terms: D006801:Humans; D007223:Infant; D009305:Nasopharynx / Q000382:microbiology*; D009345:Neisseria meningitidis / Q000302:isolation & purification*; D018805:Sepsis / Q000188:drug therapy* / Q000382:microbiology