Table 1.

Seropositivity of NT antibody to EV71 and/or CA16 by age groups

Age	N	% seropositive
		+ve both EV71 and CA16	+ve EV71 only	+ve CA16 only
< 6 m	30	33.3	6.7	33.3
6–11 m	55	0.0	5.5	16.4
1 y	110	0.9	11.8	20.0
2 y	65	16.9	23.1	21.5
3 y	58	27.6	19.0	20.7
4 y	31	41.9	22.6	29.0
5–6 y	43	67.4	9.3	20.9
7–11 y	72	80.6	5.6	12.5
12–17 y	61	86.9	3.3	8.2
≥18 y	54	74.1	3.7	22.2
Total (All age groups)	579	39.9	10.9	19.2