Table 4.

Adjusted prevalence of seropositivity to IgG antibodies against SARS-CoV-2 by categories of self-reported symptoms.

		SARS-CoV-2 IgG seropositivity
	N	n	%	95%CI
Symptoms category
No symptoms	1089	36	2•4	1•4–3•6
Atypical symptoms	77	5	5•7	1•6–13•9
Mild symptoms	3247	341	9•8	8•7–10•9
Moderate symptoms	331	72	21•4	16•9–26•3

95%CI: 95% Confidence Intervals.