Table 2. Sample size, seroprevalences and GMTs in different age groups.

Age group	No. of subjects	Seroprevalence %	Geometric mean titer (95%CI)	p
0–5	752	28.2	11.77(10.77–12.86)	0.000
6–10	640	28.3	12.65(11.46–13.96)
11–20	799	32.8	14.7(13.4–16.13)
21–30	597	20.5	10.02(9.08–11.06)
31–40	271	16.6	9.05(7.83–10.45)
41–50	217	15.2	8.44(7.27–9.79)
51–60	171	13.5	7.93(6.84–9.2)
61–70	613	12.1	7.81(7.18–8.49)
71–80	201	12.4	7.53(6.6–8.6)
>80	58	13.8	7.32(5.85–9.17)