Summary statistics of monthly IMD rates per 100 000 population
| Period | Number of months | Median of monthly IMD rates per 100 000 population (IQR) |
| Ages 0–14 | ||
| January 2014–February 2020 | 73 | 0.10 (0.05–0.15) |
| March 2020–May 2021 | 16 | 0.02 (0.00–0.05) |
| Ages 0–4 | ||
| January 2014–February 2020 | 73 | 0.19 (0.00–0.37) |
| March 2020–May 2021 | 16 | 0.00 (0.00–0.19) |
| Ages 5–14 | ||
| January 2014–February 2020 | 73 | 0.00 (0.00–0.10) |
| March 2020–May 2021 | 16 | 0.00 (0.00–0.00) |
IMD, invasive meningococcal disease .