| Month | Overall | ||
---|---|---|---|---|
November 2020 | December 2020 | January 2021 | Â | |
Number of outbreaks | 64 (37%) | 43 (25%) | 66 (38%) | 173 (100%) |
Median (IQR) cases per outbreak | 5 (3–9) | 11 (6.5–15.5) | 10 (6–15) | 8 (5–13) |
Mode (range) of cases per outbreak | 3 (2–20) | 5 (2–31) | 6 (2–33) | 2 (2–33) |
Cases in children | 115 (27%) | 146 (30%) | 249 (34%) | 510 (31%) |
Cumulative incidence in children (95% confidence interval) | 2.34% (1.94–2.81) | 3.89% (3.30–4.57) | 4.21% (3.72–4.77) | 3.50% (3.21–3.81) |
Cases in staff with direct contact with children | 290 (68%) | 309 (63%) | 429 (58%) | 1028 (62%) |
Cumulative incidence in staff with direct contact with children (95% CI) | 26.58% (24.00–29.33) | 37.87% (34.45–41.31) | 35.34% (32.66–38.11) | 32.94% (31.30–34.62) |
Cases in staff without contact with children | 23 (5%) | 36 (7%) | 60 (8%) | 119 (7%) |
Cumulative incidence in staff without contact with children (95% CI) | 11.56% (7.62–17.03) | 21.95% (16.03–29.22) | 26.55% (21.02–32.9) | 20.20% (17.08–23.72) |
Cases in all staff | 313 (73%) | 345 (70%) | 489 (66%) | 1147 (69%) |
Cumulative incidence in all staff (%) | 24.26% (21.97–26.72) | 35.20% (32.23–38.30) | 33.96% (31.52–36.48) | 30.92% (29.44–32.44) |
Total cases | 428 (26%) | 491 (30%) | 738 (45%) | 1657 (100%) |
Total cumulative incidence % | 6.90% (6.29–7.56) | 10.36% (9.52–11.27) | 10.04% (9.37–10.76) | 9.06% (8.65–9.49) |