Table 1. Participant characteristics

Participant number	Sex	Age	Ethnicity	Area	Education level	Work status	Otherconditions	Onset ofCOVID-19^a	Ag test	Ab test
P1	F	20	WhiteBritish	Urban	Student	PT	Asthma	Mar	Neg	No
P2	M	22	White other	Inner city	Student	No	Hayfever	April	No	No
P3	M	60	WhiteBritish	Sub-urban	Degree	FT	Ulcerative colitis	Jan	No	No
P4	F	37	WhiteBritish	Rural	Degree	FT	Anxiety	Mar	No	No
P5	F	31	WhiteBritish	Rural	Degree	FT	Hypothyroid	Mar	Neg	No
P6	F	42	WhiteBritish	Urban	Degree	FT	Allergies	Mar	Neg	Neg
P7	F	37	WhiteBritish	Urban	Degree	FT	Hayfever	Mar	Neg	Pos
P8	M	68	WhiteBritish	Rural	Degree	Retired	Non-tuberculosis mycobacterium disease, bronchiectasis	Mar	Neg	No
P9	F	39	WhiteBritish	Urban	Degree	FT	None	Apr	Neg	No
P10	F	50	WhiteBritish	Sub-uban	Degree	FT	None	Mar	No	No
P11	F	34	Mixed heritage	Semi-rural	Degree	PT	Allergies	Mar	No	No
P12	M	67	WhiteBritish	Sub-urban	O levels	Retired	Cardiac arrhythmia	Mar	No	Pos
P13	F	30	White other	Inner city	Degree	FT	Allergies	Mar	No	Pos
P14	M	66	WhiteBritish	Rural	Degree	PT	None	Mar	Neg	No
P15	F	52	WhiteBritish	Urban	Degree	PT	Immunological defects	Mar	Neg	No
P16	F	42	WhiteBritish	Urban	Degree	PT	None	Apr	No	No
P17	F	42	WhiteBritish	Sub-urban	Degree	FT	Hay fever	Mar	Neg	Neg
P18	F	40	WhiteBritish	Sub-urban	Degree	No	Asthma, Crohns	Mar	Neg	Neg
P19	F	59	WhiteBritish	Rural	Degree	No	Hypothyroidism	Mar	No	No
P20	F	54	WhiteBritish	Sub-urban	A levels	PT	Heart surgery as infant, fibromyalgia	Mar	No	No
P21	F	42	WhiteBritish	Urban	Degree	PT	Asthma, depression	Mar	No	No
P22	F	26	WhiteBritish	Urban	Degree	PT	Asthma	Apr	Pos	Neg
P23	F	40	WhiteBritish	Sub-urban	Degree	PT	Asthma, hayfever, IBS	Mar	Neg	No
P24	F	37	WhiteBritish	Urban	Degree	PT	None	Mar	No	No

^aAll dates in 2020. FT = full-time. PT = part-time. No = none. Neg = negative result. Pos = positive result.