Table 1.

Prevalence of HBV serological markers from studies conducted in Viet Nam.^a

Authors	Year of survey	Study population	Overall sample size	HBsAg(+) in women of reproductive age (%)	HBeAg(+) in HBsAg(+) women (%)	Anti-HBc (+) in children aged 5 (%)	Anti-HBc(+) in adults (%)
Do et al. [4]	2012	Adults randomly selected in Binh Thuan province	509	20b	NA	NA	71.7
Le Viet et al. [15]	2007	Potential voluntary blood donors in two rural communities in Quang Tri province	1200	7.9	NA	NA	51.7
Nguyen et al. [3]	2002	Adults randomly selected in two rural districts in Thai Binh province	837	24c	21.4c	NA	68.2
Duong et al. [2]	2006	Adults randomly selected in Linhson village, Thainguyen province	383	8.8	38.2e	NA	66.2
Lan et al. [1]	2006	Married women aged 18–39 years in FilaBavi	606	7.1	NA	NA	NA
Goto et al. [18]	2003	Pregnant women 15–49 years of age attending antenatal care in 4 districts in Nghe An Province	505	10	NA	NA	NA
Hipgrave et al. [16]	1998	Children and adults randomly selected from two districts of Thanh Hoa province	1579	15.8	27.8	36.4	79.2
Nakata et al. [17]	1993	Pregnant women and patients without liver diseases in Hanoi and Ho Chi Minh	591	14d	NA	34.8f	NA

^aWhere necessary, recalculations from the original publications were conducted to obtain estimates of interest.

^bEstimate included both men and women aged 20–39 years.

^cEstimate included both men and women aged 20–29 years.

^dEstimate included both men and women aged 16 years and above.

^eEstimate includes all HBsAg positive participants (men and women aged 18–70 years).

^fThe estimate presented is a proxy using the sum of anti-HBs positive or HBsAg positive participants aged 1–10 years who were born before vaccine introduction in Viet Nam.