Mild and Asymptomatic Coronavirus Disease in Children, Adolescents, and Household Contacts and Prolonged Viral Excretion

Table 4

Correlation between presence of symptoms and laboratory confirmation of SARS-CoV-2 infection in 128 children and adolescents by age group.

Test	Result	Age group	Asymptomatic		Symptomatic		All		value
			n	%	n	%	N	%
IgA	Negative	≥6 and <12 months	0	0.0	4	25.0	4	18.2	0.176
		≥1 and <5 years	1	16.7	6	37.5	7	31.8	0.350
		≥5 and <10 years	2	33.3	2	12.5	4	18.2	0.259
		≥10 and ≤18 years	3	50.0	4	25.0	7	31.8	0.262
	Positive	<6 months	0	0.0	3	4.3	3	3.7	0.462
		≥6 and <12 months	0	0.0	2	2.9	2	2.5	0.550
		≥1 and <5 years	8	66.7	12	17.4	20	24.7	<0.001
		≥5 and <10 years	2	16.7	20	29.0	22	27.2	0.376
		≥10 and ≤18 years	2	16.7	32	46.4	34	42.0	0.054
IgG	Negative	≥6 and <12 months	0	0.0	4	26.7	4	20.0	0.197
		≥1 and <5 years	1	20.0	6	40.0	7	35.0	0.417
		≥5 and <10 years	2	40.0	1	6.7	3	15.0	0.071
		≥10 and ≤18 years	2	40.0	4	26.7	6	30.0	0.573
	Positive	<6 months	0	0.0	3	4.2	3	3.6	0.450
		≥6 and <12 months	0	0.0	2	2.8	2	2.4	0.540
		≥1 and <5 years	8	61.5	13	18.3	21	25.0	<0.001
		≥5 and <10 years	2	15.4	21	29.6	23	27.4	0.291
		≥10 and ≤18 years	3	23.1	32	45.1	35	41.7	0.139
qRT-PCR	Negative	≥1 and <5 years	4	44.4	5	29.4	9	34.6	0.443
		≥5 and <10 years	2	22.2	3	17.6	5	19.2	0.778
		≥10 and ≤18 years	3	33.3	9	52.9	12	46.2	0.340
	Positive	<6 months	0	0.0	5	5.4	5	4.9	0.476
		≥6 and <12 months	0	0.0	9	9.7	9	8.8	0.328
		≥1 and <5 years	4	44.4	17	18.3	21	20.6	0.064
		≥5 and <10 years	2	22.2	25	26.9	27	26.5	0.762
		≥10 and ≤18 years	3	33.3	37	39.8	40	39.2	0.705

Two proportions equality test. n, number of cases; %, percentage.