Objective: To explore the current status of HBV infection before pregnancy among rural childbearing age people in Yunnan province, find out the population at high risk and areas with high incidence and provide evidence for promoting pre-pregnancy aristogenesis and medical interventions for prevention of HBV infection. Methods: The subjects in the study were rural childbearing age people aged 18-49 who received the national free pre pregnancy eugenic health examination in Yunnan province during 2013-2017. Descriptive analysis was conducted for HBsAg positive rate and its difference among various characteristics. The SPSS 22.0 software was used for statistical analysis. Results: A total of 2 180 841 rural childbearing age people were surveyed, the HBsAg positive rate before pregnancy was 3.13%(68 314/2 180 841) in Yunnan. And the HBsAg positive rate was 3.56% (37 694/1 057 376) in men, higher than that in women (2.73%, 30 620/1 123 465). The HBsAg positive rate was highest in age group 41-49 years (3.77%, 3 126/82 931). The HBsAg positive rate was higher in minority ethnic group (3.77%, 27 974/742 518) than in Han ethnicity group (2.81%, 40 024/1 425 870). Moreover, the highest HBsAg positive rate of was 8.20%(851/10 378) in Yao ethnic group. The people with education level of primary education had the highest HBsAg positive rate (3.97%, 17 294/435 219). The HBsAg positive rate was highest in Xishuangbanna Dai autonomous prefecture (6.65%, 3 875/58 232) in Yunnan. Moreover, the HBsAg positive population in severe poor area (3.32%, 19 755/595 665) was higher than those in less poor area (3.17%, 29 750/939 101) or normal areas (2.91%, 18 809/646 075). There was significant difference in HBsAg positive rate among populations in different age groups, ethnic groups, education level groups, areas and economic level groups (P<0.001). Conclusions: The HBsAg positive rate in rural childbearing age people in Yunnan was related to multi factors, including sex, age, ethnic group, education level, area and economic development level. The HBsAg positive rate was higher in men, older age and lower education level, minority ethnic group (especially in Yao ethnic group), from Xishuangbanna prefecture and the poor living conditions in childbearing age population.
目的： 了解云南省农村地区育龄人群孕前HBV感染状况，筛查出HBV易感人群及高发地区，为孕前优生和科学干预提供依据。 方法： 研究对象为2013-2017年云南省农村地区接受国家免费孕前优生健康检查的18~49岁育龄人群。描述和分析不同特征育龄人群HBsAg阳性率及其差异。采用SPSS 22.0软件进行统计学分析。 结果： 农村育龄人群中，共筛查2 180 841例研究对象，HBsAg阳性率为3.13%（68 314/2 180 841）。男性HBsAg阳性率（3.56%，37 694/1 057 376）高于女性（2.73%，30 620/1 123 465）；41~49岁年龄组HBsAg阳性率最高（3.77%，3 126/82 931）；少数民族HBsAg阳性率（3.77%，27 974/742 518）高于汉族（2.81%，40 024/1 425 870），瑶族HBsAg阳性率最高（8.20%，851/10 378）；小学及以下文化程度人群HBsAg阳性率最高，为3.97%（17 294/435 219）；西双版纳傣族自治州（西双版纳州）HBsAg阳性率最高（6.65%，3 875/58 232）；深度贫困地区HBsAg阳性率（3.32%，19 755/595 665）高于贫困地区（3.17%，29 750/939 101）与非贫困地区（2.91%，18 809/646 075）。不同特征育龄人群HBsAg阳性率的差异均有统计学意义（均P<0.001）。 结论： 云南省农村地区育龄人群HBsAg阳性率与其性别、年龄、民族、文化程度、筛查地区及地区经济发展水平等因素相关。育龄人群中，男性、年龄较大、文化程度较低、少数民族（尤其是瑶族）、来自西双版纳州和贫困地区HBsAg阳性率较高。.
Keywords: Childbearing age people; HBsAg; Rural areas; Screening.