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Table 2 Average annual rates (per 100,000 individuals) of meningococcal disease in the US (1997–2001)

From: Invasive meningococcal disease epidemiology and control measures: a framework for evaluation

Age (years) Group B Group C Group Y Other All Groups
<1 5.1 1.0 2.3 1.1 9.6
1 1.4 0.8 0.7 0.5 3.4
2–4 1.1 0.7 0.2 0.3 2.3
5–17 0.3 0.4 0.3 0.2 1.1
18–34 0.3 0.2 0.2 0.1 0.8
35–49 0.1 0.1 0.1 0.1 0.4
50–64 0.1 0.1 0.2 0.1 0.5
≥65 0.2 0.2 0.6 0.2 1.2
All Ages 0.3 0.2 0.3 0.1 1.0
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