TABLE 1

Average Annual Incidence of Meningococcal Disease in Children <1 year: United States, 2006–2012

Age, moSerogroup BSerogroup CSerogroup YTotala
Incidence (95% CI)Incidence (95% CI)Incidence (95% CI)Incidence (95% CI)
0–11.96 (0.98–3.52)0.02 (0.00–0.70)0.64 (0.17–1.71)2.81 (1.61–4.57)
2–32.48 (1.37–4.16)0.29 (0.04–1.13)0.21 (0.01–1.05)3.45 (2.12–5.31)
4–52.08 (1.10–3.60)0.39 (0.06–1.36)0.87 (0.28–2.06)3.34 (2.04–5.19)
6–71.79 (0.87–3.29)0.39 (0.06–1.36)0.60 (0.16–1.62)2.95 (1.73–4.72)
8–91.56 (0.74–2.95)0.39 (0.09–1.24)0.19 (0.00–1.03)2.34 (1.31–3.91)
10–110.66 (0.19–1.72)0.12 (0.00–0.87)0.73 (0.21–1.86)1.54 (0.72–2.91)
Total1.76 (1.35–2.25)0.27 (0.13–0.49)0.54 (0.32–0.85)2.74 (2.22–3.34)
  • ABCs cases from 2006 through 2012 directly standardized to the race distribution of the US population.

  • a Includes other serogroups (eg, serogroup W, nongroupable).