Table 3.

The average IgG/IgM antibody titers for the different age groups from symptom onset to day 210.

Days	IgG AU/mL
	0–15 years	%	16–44 years	%	45–65 years	%	66+ years	%
30	250.6 ± 6.9		158.4 ± 60.9		187.3 ± 32.7		157.9 ± 50
60	86.7 ± 0	24.6	98.3 ± 48.1	62.1	69.2 ± 22.5	36.9	103.0 ± 56.1	65.2
90	51.6 ± 20.0	20.6	62.0 ± 32.5	39.1	66.9 ± 22.6	35.7	60.4 ± 27.8	38.3
120	75.2 ± 31.8	30	63.8 ± 33.9	40.3	71.6 ± 28.6	38.2	60.9 ± 28.4	38.6
150	18.7 ± 18.4	7.5	26.2 ± 24.6	16.5	51.8 ± 29.3	27.7	49.2 ± 35.9	31.2
180	16.8 ± 9.8	6.7	32.0 ± 26.0	20.2	37.2 ± 27.8	19.9	40.8 ± 26.1	25.8
210	27.5 ± 30.1	11.0	42.1 ± 32.5	26.8	45.9 ± 22.7	24.5	42.8 ± 27.1	27.1
	IgM AU/mL
30	6.2 ± 3.2		39.8 ± 34.6		107.8 ± 102.8		136.1 ± 171.2
60	20.9 ± 0		16.3 ± 15.8		92.1 ± 121.3		27.4 ± 28.1
90	2.1 ± 1.5		2.4 ± 2.0		13.3 ± 15.0		8.6 ± 18.9
120	4.4 ± 5.0		7.0 ± 6.2		14.5 ± 15.0		9.8 ± 10.6
150	0.51 ± 0.3		8.1 ± 8.8		12.2 ± 12.9		7.4 ± 7.2
180	0.6 ± 0.2		2.1 ± 2.4		6.3 ± 8.3		5.5 ± 7.0
210	6.3 ± 9.7		3.4 ± 3.9		6.5 ± 7.5		4.0 ± 4.7