Objective To systemically analyze the serological characteristics of hepatitis B virus( HBV) infection in the general population and preliminarily assess the effectiveness of immunization strategy of hepatitis B vaccine in Shanghai. Methods We enrolled 2 835 residents from 30 communities with multistage stratified random sampling method and principle of informed consent. Enzyme-linked immunosorbent assay method was used to detect serum samples. We used descriptive statistics tools to estimate standardized s...