Table 1.

Serology test results by region—NHS staff compared with population survey data (ONS): seroprevalence rates (unweighted) and odds of increased risk of infection in NHS staff

Region	NHS staff				ONS/community				OR	95% CI
	Total serology tests	Total positive tests	Seroprevalence (%)	95% CI	Total serology tests	Total positive tests	Seroprevalence (%)	95% CI
											London	212 117	50 645	23.9	23.7 to 24.1	617	72	11.7	9.3 to 14.5	2.4	1.9 to 3.1
North West	200 499	34 833	17.4	17.2 to 17.5	679	40	5.9	4.4 to 8.0	3.4	2.4 to 4.7
East of England	76 984	12 129	15.8	15.5 to 16.0	751	51	6.8	5.2 to 8.9	2.6	1.9 to 3.5
Midlands	201 802	31 025	15.4	15.2 to 15.5	1201	71	5.9	4.7 to 7.4	2.9	2.3 to 3.7
North East and Yorkshire	189 181	26 873	14.2	14.0 to 14.4	738	35	4.7	3.4 to 6.6	3.3	2.4 to 4.8
South East	161 205	22 073	13.7	13.5 to 13.9	895	46	5.1	3.8 to 6.8	2.9	2.2 to 4.0
South West	104 522	9319	8.9	8.8 to 9.1	857	24	2.8	1.9 to 4.1	3.4	2.3 to 5.3
Total	1 146 310	186 897	16.3	16.2 to 16.4	5738	339	5.9	5.3 to 6.6	3.1	2.8 to 3.5

NHS Trust staff data from NHS E&I: 26 May–31 August 2020.

Community population COVID-19 Infection Survey data from ONS: 26 April–8 September 2020.

NHS, National Health Service; NHS E&I, NHS England and Improvement; ONS, Office for National Statistics.