Table 1.

Demographic characteristics of paricipants included in the serosurvey, Zhejiang, 2015

Age (years)	Changxin		Liandu		Total
	N	Percent(%)	N	Percent(%)	N	Percent(%)
15y-	115	19.20	135	21.57	250	20.41
20y-	139	23.21	117	18.69	256	20.90
25y-	126	21.04	129	20.61	255	20.82
30y-	116	19.37	122	19.49	238	19.43
35-39y	103	17.20	123	19.65	226	18.45
Total	599	100	626	100	1225	100