Objective Analysis of hepatitis B (HepB) vaccination coverage and its influencing factors among adults in eight Chinese cities.

Methods Data were derived from a special survey on key infectious diseases among registered residents conducted in eight cities in eastern (Suzhou city, Qingdao city, Guangzhou city), central (Zhengzhou city, Changsha city), and western (Jiulongpo district of Chongqing city, Xishuangbanna prefecture, Ürümqi city) China as part of the 2017 National Migrant Population Health and Family Planning Dynamic Monitoring Project. A total of 9 671 individuals aged 18–45 years were included in the study. Chi-square tests and binary logistic regression models were used to analyze HepB vaccination coverage and its influencing factors.

Results The overall HepB vaccination coverage among the participants was 45.23%. Lower education levels were associated with a higher risk of not being vaccinated against HepB (P < 0.05). Lower HepB vaccination coverage was observed among adults residing in central and eastern regions, those with agricultural household registration, those who spent > 15 minutes traveling to healthcare facilities, those who had not heard of the National Essential Public Health Services program, those who had not received public health education, those who had not received face-to-face individualized health counseling, and those who had not received health education on sexually transmitted infections and AIDS (all P < 0.05). Among residents born before, during, and after the inclusion of HepB vaccination in the immunization program, lower education levels and residence in central and eastern regions were consistently associated with lower HepB vaccination coverage (all P < 0.05). Before the HepB vaccination program was promoted, not having heard of the National Essential Public Health Services program and lack of public health education and individual face-to-face counseling were associated with a higher risk of not being vaccinated against HepB. During the promotion period, being married, spending > 15 minutes traveling to healthcare facilities, and lack of public health education and education on sexually transmitted infections and AIDS were associated with a higher risk of not being vaccinated against HepB. After the inclusion of HepB vaccination in the immunization program, spending > 15 minutes traveling to healthcare facilities and not having received individual face-to-face counseling were associated with a higher risk of not being vaccinated against HepB.

Conclusions HepB vaccination coverage among Chinese adults is primarily influenced by education level, region, time spent traveling to healthcare facilities, and health education.