Volume 9, Number 4—April 2003
Research
Invasive Group B Streptococcal Infections in Finland: A Population-based Study
Outi Lyytikäinen*
, J. Pekka Nuorti*, Erja Halmesmäki†, Petteri Carlson†, Jukka Uotila‡, Risto Vuento‡, Tapio Ranta§, Hannu Sarkkinen§, Martti Ämmälä¶, Anja Kostiala¶, and Anna-Liisa Järvenpää†
, J. Pekka Nuorti*, Erja Halmesmäki†, Petteri Carlson†, Jukka Uotila‡, Risto Vuento‡, Tapio Ranta§, Hannu Sarkkinen§, Martti Ämmälä¶, Anja Kostiala¶, and Anna-Liisa Järvenpää†Table 1
Incidence of invasive group B streptococcus infection by age and sex, Finland, 1995–2000
| Age group (y) | Men |
Women |
Total |
|||
|---|---|---|---|---|---|---|
| No. of cases | Ratea | No. of cases | Ratea | No. of cases | Ratea | |
| <1 |
143 |
79.3 |
129 |
74.7 |
272 |
77.1 |
| 1–14 |
1 |
0.04 |
5 |
0.2 |
6 |
0.1 |
| 15–64 |
128 |
1.2 |
193 |
1.9 |
321 |
1.6 |
| >64 |
103 |
6.0 |
151 |
5.4 |
254 |
5.6 |
| All | 375 | 2.5 | 478 | 3.0 | 853 | 2.8 |
aAverage annual incidence (cases per 100,000 population)
