TABLE 2.
Age distribution of 550 invasive meningococcal disease (IMD) cases and incidence rates by serogroup in Canada, 2010 to 2014
| Age range (yr) or IRa |
No. of cases by serogroup |
Total | ||||
|---|---|---|---|---|---|---|
| B | C | Y | W | Otherb | ||
| Age range | ||||||
| <1 | 65 | 1 | 7 | 3 | 0 | 76 |
| 1–4 | 68 | 0 | 4 | 5 | 0 | 77 |
| 5–14 | 29 | 2 | 4 | 1 | 0 | 36 |
| 15–24 | 72 | 7 | 23 | 4 | 4 | 110 |
| 25–44 | 29 | 8 | 18 | 2 | 0 | 57 |
| 45–64 | 51 | 12 | 35 | 5 | 1 | 104 |
| ≥65 | 34 | 10 | 34 | 7 | 3 | 88 |
| NIc | 1 | 1 | 0 | 0 | 0 | 2 |
| Total | 349 | 41 | 125 | 27 | 8 | 550 |
| IR | 0.197 | 0.023 | 0.071 | 0.015 | 0.005 | 0.310 |
a
The mean annual incidence rate (IR) of culture-confirmed IMD per 100,000 population categorized by serogroup.
b
That is, the other serogroup category includes four serogroup E samples, two serogroup Z samples, one serogroup X sample, and one nonencapsulated N. meningitidis sample.
c
NI, no age information was available.