<unk>  is caused by a bacteria called Neisseria meningitidis.  The bacteria frequently lives in a person's upper respiratory tract without causing visible signs of illness.  The bacteria can be spread from person to person through respiratory droplets, patients may get infected if they are around someone with the condition when they sneeze or cough.  Family members and those closely exposed to someone with the condition are at increased risk. The infection occurs more frequently in winter and early spring.
Meningococcemia causes
Meningitis causes
Babesiosis causes
Group B streptococcal infection causes
Fungal meningitis causes
Leptospirosis causes
Neoplastic meningitis causes
Toxic shock syndrome causes