Table 2 Meningitis cases in the three most common pathogens according to age group, in three periods
Organism | N. Meningitidis* | S. Pneumoniae | H. Influenzae | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Age Group | Period | N | % | IR** | N | % | IR** | N | % | IR** |
1 to 11 | 1974–1984 | 202 | 63.3 | 32.8 | 45 | 60.8 | 7.3 | 41 | 40.2 | 6.5 |
months | 1985–1994 | 69 | 21.6 | 27.9 | 15 | 20.3 | 5.6 | 55 | 53.9 | 22.9 |
|  | 1995–2005 | 48 | 15.0 | 18.9 | 14 | 18.9 | 5.5 | 6 | 5.9 | 2.3 |
1 to 4 | 1974–1984 | 274 | 50.3 | 14.4 | 26 | 38.8 | 1.3 | 49 | 38.6 | 2.6 |
years | 1985–1994 | 136 | 25.0 | 16.7 | 14 | 20.9 | 1.7 | 72 | 56.7 | 8.7 |
|  | 1995–2005 | 135 | 24.8 | 16.3 | 27 | 40.3 | 3.3 | 6 | 4.7 | 0.7 |
5 to 9 | 1974–1984 | 93 | 38.4 | 4.1 | 10 | 40.0 | 0.4 | 7 | 43.8 | 0.3 |
years | 1985–1994 | 38 | 15.7 | 3.0 | 8 | 32.0 | 0.6 | 8 | 50.0 | 0.6 |
|  | 1995–2005 | 111 | 45.9 | 10.1 | 7 | 28.0 | 0.6 | 1 | 6.3 | 0.1 |
10 to 14 | 1974–1984 | 36 | 33.0 | 1.6 | 7 | 46.7 | 0.3 | 1 | 50.0 | 0.0 |
years | 1985–1994 | 13 | 11.9 | 0.9 | 7 | 46.7 | 0.5 | 1 | 50.0 | 0.0 |
|  | 1995–2005 | 60 | 55.0 | 5.1 | 1 | 6.7 | 0.1 | 0 | 0.0 | 0.0 |
Total | 1974–2005 | 1252 | 100.0 | 8.9 | 186 | 100.0 | 1.3 | 252 | 100.0 | 1.7 |