Confirmed clusters of meningococcal disease in preschools and schools in England and Wales from April 1995 to March 2001 by fiscal year, type of school setting, and serogroup
| Setting | 1995–96 | 1996–97 | 1997–98 | 1998–99 | 1999–00 | 2000–01 | Total |
|---|---|---|---|---|---|---|---|
| *11 other confirmed clusters included 10 with known serogroup (B or C) for only one case and one with no known serogroup for any of the cases. | |||||||
| Serogroup C alone | |||||||
| Preschool | – | 1 | – | 1 | 2 | – | 4 |
| Primary | 2 | 2 | – | – | 2 | – | 6 |
| Secondary | 4 | 3 | 3 | 8 | 1 | – | 19 |
| Independent | 1 | – | – | – | – | – | 1 |
| Total C | 7 | 6 | 3 | 9 | 5 | 0 | 30 |
| Serogroup B alone | |||||||
| Preschool | – | – | 1 | 1 | 3 | 1 | 6 |
| Primary | – | – | 4 | – | 2 | 6 | 12 |
| Secondary | – | 1 | 2 | – | 1 | 3 | 7 |
| Total B | 0 | 1 | 7 | 1 | 6 | 10 | 25 |
| Serogroup mixed B and C | |||||||
| Preschool | – | 1 | – | – | – | – | 1 |
| Primary | – | – | – | 2 | – | – | 2 |
| Secondary | – | 2 | 1 | – | 1 | – | 4 |
| Total mixed B and C | 0 | 3 | 1 | 2 | 1 | 0 | 7 |
| Other confirmed* | |||||||
| Preschool | – | – | – | 1 | – | – | 1 |
| Primary | – | 1 | 2 | 2 | – | – | 5 |
| Secondary | 2 | 1 | 1 | 1 | – | – | 5 |
| Independent | – | – | – | – | – | – | – |
| Total other | 2 | 2 | 3 | 4 | – | – | 11 |
| Total | 9 | 12 | 14 | 16 | 12 | 10 | 73 |