Fast Five Quiz: What Do You Know About Meningitis?

Michael Stuart Bronze, MD


May 06, 2021

Streptococcus pneumoniae, a gram-positive coccus, is the most common bacterial cause of meningitis. In addition, it is the most common bacterial agent in meningitis associated with basilar skull fracture and cerebrospinal fluid (CSF) leak. It may be associated with other focal infections, such as pneumonia, sinusitis, or endocarditis (as, for example, in Austrian syndrome, which is the triad of pneumococcal meningitis, endocarditis, and pneumonia). Over the past several decades, the incidence of bacterial meningitis caused by Haemophilus influenzae, S pneumoniae, group B streptococcus, Listeria monocytogenes, or Neisseria meningitidis has decreased in the United States due in part to use of protective vaccines. In 1990, the H influenzae type b (Hib) conjugate vaccine became available for infants, and a decade later, the polysaccharide pneumococcal conjugate vaccine (PCV7) dramatically reduced the rate of invasive pneumococcal disease.

Learn more about the etiology of meningitis.


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