Volume 3, Number 2—June 1997
Dispatch
Pertussis in the Netherlands: an Outbreak Despite High Levels of Immunization with Whole-Cell Vaccine
Table
Age distribution (percentages) pertussis notification in 1989 to 1996
| Age | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 |
|---|---|---|---|---|---|---|---|---|
| 0 | 21 | 21 | 23 | 21 | 24 | 16 | 13 | 7 |
| 1-4 | 21 | 21 | 26 | 19 | 27 | 34 | 33 | 30 |
| 5-9 | 42 | 37 | 34 | 30 | 26 | 32 | 30 | 39 |
| 10-14 | 10 | 9 | 10 | 17 | 12 | 8 | 10 | 11 |
| 15-19 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 |
| ≥20 | 5 | 9 | 6 | 11 | 10 | 8 | 12 | 11 |
| Unknown |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
0 |
| Total (n) | 434 | 471 | 164 | 169 | 294 | 536 | 319 | 2,771 |


