Bacterial meningitis epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aysha Anwar, M.B.B.S[2]

Demographics

Age

• The frequency of different causative agents causing bacterial meningitis varies with different age groups
• There is increased incidence of bacterial meningitis with increasing age
• In USA, the incidence rate is 0.66 cases per 100, 000 in age groups from 18 to 34 years compared to 1.92 cases per 100, 000 in age group >65 years of age.
• The case fatality rate in USA in age group 18-34 years of age is 16.4 percent compared to 22.7 percent in individuals >65 years of age

Race
Gender
Geographical distribution

• The frequency of different bacterial causes of meningitis may vary in different parts of the world.
• Meningococcal meningitis is commonest cause of meningitis epidemic in developing world. However, it is relatively uncommon cause of meningitis in USA and Europe.

References

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