Table 2.

Chronic Hepatitis B Virus Infection in Women of Childbearing Age, 2011–2017

Test Year	All Women			Birth-dose Cohort			Adolescent-dose Cohort			Partial-vaccination Cohort
	Sample Size	Number of Positive Tests	%	Sample Size	Number of Positive Tests	%	Sample Size	Number of Positive Tests	%	Sample Size	Number of Positive Tests	%
2011	1 221 534	10 191	0.83	98 472	205	0.21	678 785	3616	0.53	444 277	6370	1.43
2012	1 170 897	6368	0.54	131 167	183	0.14	665 304	2593	0.39	374 426	3592	0.96
2013	1 062 471	5083	0.48	153 846	231	0.15	612 854	2328	0.38	295 771	2524	0.85
2014	1 058 643	5100	0.48	192 354	267	0.14	607 515	2489	0.41	258 774	2344	0.91
2015	1 106 327	4538	0.41	246 753	346	0.14	628 680	2297	0.37	230 894	1895	0.82
2016	1 213 517	4213	0.35	322 456	383	0.12	671 997	2269	0.34	219 064	1561	0.71
2017	1 201 276	2262	0.19	373 088	281	0.08	641 844	1277	0.20	186 344	704	0.38
Total	8 034 665	37 755	0.47	1 518 136	1896	0.12	4 506 979	16 869	0.37	2 009 550	18 990	0.94

Chronic HBV infection was defined by ≥1 laboratory HBV testing to define chronic HBV infection in laboratory criteria (hepatitis B surface antigen, hepatitis B e antigen, and HBV DNA). Abbreviation: HBV, hepatitis B virus.