Table 1

Age distribution of IMD cases in Ireland and the two study paediatric hospitals, 2001–2011

20012002200320042005200620072008200920102011
Age (years)N*S†NSNSNSNSNSNSNSNSNSNS
<184 (6)‡25 (1)66 (5)17 (1)68 (5)15 (1)49 (2)852 (3)11 (2)53 (2)1048 (1)19 (1)426411530 (2)13 (1)309
1–4101 (1)2581 (3)21 (2)77 (1)1880 (6)19 (1)76 (2)14 (2)67 (2)18 (2)58 (4)1458 (3)840 (2)1244 (1)927 (1)6
5–9411026418315215517614212 (1)011 (1)3 (1)8 (1)292
10–1429 (1)822514 (2)19012111013193614142
15–1933 (1)023226 (1)221019130020 (1)017221012170
Total288 (9)68 (1)218 (8)49 (3)203 (7)39 (1)174 (8)29 (1)174 (5)32 (4)178 (4)34 (2)153 (6)36 (1)138 (4)19119 (3)31 (1)98 (4)26 (1)77 (1)19
  • *N: Cases reported nationally.

  • †S: Cases reported in our study.

  • ‡(): Deaths.

  • IMD, invasive meningococcal disease.