Table 4.
Attack rates with 95% confidence intervals in students and staff according to the index case in outbreaks reported to Public Health England (PHE) during the first half of the autumn term in England.
| Attack Rate | ||||
|---|---|---|---|---|
| Index Case | Group affected | Primary Schools | Secondary Schools | Both Settings |
| Student | Students | 167/13,967 (1.20%; 1.03 - 1.39%) | 700/56,418 (1.24%; 1.15 - 1.34%) | 867/70,385 (1.23%; 1.15 - 1.32%) |
| Teaching staff | 86/1300 (6.62%; 5.35 - 8.14%) | 144/4678 (3.08%; 2.61 - 3.62%) | 230/5978 (3.85%; 3.38 - 4.97%) | |
| Non-teaching staff | 16/747 (2.14%; 1.27 - 3.53%) | 56/2708 (2.07%; 1.58 - 2.70%) | 72/3455 (2.08%; 1.65 - 2.63%) | |
| Total (all staff/students) | 269/16,014 (1.68%; 1.49 - 1.89%) | 900/63,804 (1.41%; 1.32 - 1.51%) | 1169/79,818 (1.46%; 1.39 - 1.55%) | |
| Teaching staff | Students | 127/18,083 (0.70%; 0.59 - 0.84%) | 330/27,119 (1.22%; 1.09 - 1.36%) | 457/45,202 (1.01%; 0.92 - 1.10%) |
| Teachers | 250/1832 (13.65%; 12.12 - 15.32%) | 123/1786 (6.89%; 5.78 - 8.19%) | 373/3618 (10.31%; 4.22 - 6.13%) | |
| Non-teaching staff | 53/890 (5.96%; 4.53 - 7.77%) | 57/1269 (4.49%; 3.45 - 5.82%) | 110/2159 (5.09%; 4.22 - 6.13%) | |
| Total (all staff/students) | 430/20,805 (2.07%; 1.88 - 2.27%) | 510/30,174 (1.69%; 1.55 - 1.84%) | 940/50,979 (1.84%; 1.73 - 1.97%) | |
| Non-teaching staff | Students | 13/3853 (0.34%; 0.19 - 0.59%) | 65/6556 (0.99%; 0.77 - 1.27%) | 78/10,409 (0.75%; 0.60 - 0.94%) |
| Teaching staff | 21/356 (5.90%; 3.78 - 9.01%) | 17/532 (3.20%; 1.93 - 5.17%) | 38/888 (4.28%;3.09 - 5.88%) | |
| Non-teaching staff | 16/197 (8.12; 4.86 – 13.08%) | 13/337 (3.86%; 2.16 - 6.67%) | 29/534 (5.43%; 3.73 – 7.79%) | |
| Total (staff and students) | 50/4406 (1.13%; 0.85 - 1.51%) | 95/7425 (1.28%; 1.04 - 1.57%) | 145/11,831 (1.23%; 1.04 - 1.44%) | |