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Incidence and Prevalence

Most (approx. 70%) cases of meningitis occur in children under the age of 5 or in people over the age of 60.

In the United States, bacterial meningitis affects about 3 in 100,000 people each year, and viral meningitis affects about 10 in 100,000.

Hib vaccine has reduced U.S. incidence of bacterial meningitis caused by Haemophilus influenzae type b by approximately 90%. The disease is more prevalent in people between the ages of 15 and 24 who have not bee...Read the full article