MedlinePlus noted that people who are at higher risk for this type of bacterial meningitis include those with AIDS, pulmonary tuberculosis, a weakened immune system or people who use alcohol excessively.
Several other bacteria can cause meningitis. These include the Staphylococcus bacteria, such as Staphylococcus epidermidis or Staphylococcus aureus, that cause staphylococcal meningitis; and the bacterium Haemophilus influenzae, which causes H. influenzae meningitis. Patients may have gram-negative meningitis, in which the meningitis is caused by gram-negative bacteria—bacteria that become pink when a stain is introduced. MedlinePlus listed Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, Enterobacter aerogenese and Escherichia coli.
Also called aseptic meningitis, viral meningitis is the most common type of meningitis, according to the National Institute of Neurological Disorders and Stroke. Viruses that can cause meningitis include enteroviruses, herpes simplex type 2, varicella zoster, HIV, mumps and influenza. This type of meningitis tends to be mild.
National Institute of Neurological Disorders and Stroke. Meningitis and Encephalitis Fact Sheet. 2011. Web. 20 April 2011
A.D.A.M. Meningitis – Crytococcal. MedlinePlus, 2011. Web. 20 April 2011
National Center for Immunization and Respiratory Disease. Meningitis: Questions and Answers. Centers for Disease Control and Prevention, 2011. Web. 20 April 2011
A.D.A.M. Meningitis – Pneumococcal. MedlinePlus, 2011. Web. 20 April 2011
WHO Media Centre. Meningococcal Meningitis. World Health Organization, 2010. Web. 20 April 2011