Table 2. Incidence of invasive meningococcal disease (/100,000) case fatality rate (CFR) and percentage of cases with sequelae in age groups in Poland, 2010–2011 (only cases with known outcome were included when calculating the CFR, n = 458).

Age	Incidence	Total CFR (%)	MenBCFRa	MenCCFRb	Sequelae (%)
in months
0–11	13.36	10.9	9.3	14.3	3.0
12–23	7.69	8.6	9.8	5.9	3.4
24–35	4.24	17.6	26.7	11.1	0.0
36–47	3.91	6.9	7.1	6.7	3.4
48–59	2.57	5.0	10.0	0.0	5.0
in years
0–5	6.35	10.3	11.0	9.0	2.9
5–9	0.89	12.5	9.5	10.0	3.1
10–14	0.56	5.6	12.5	0.0	5.6
15–19	1.33	3.7	3.7	6.5	1.9
20–24	0.53	15.4	23.5	0.0	3.8
25–44	0.18	7.9	0.0	9.5	2.6
45–64	0.17	2.9	0.0	6.7	5.7
65+	0.14	46.2	37.5	50.0	7.7
All ages	0.65	10.0	10.3	8.8	3.3

^aMenB CFR - case fatality rate associated with infections caused by serogroup B meningococci;

^bMenC CFR - case fatality rate associated with infections caused by serogroup C meningococci.