Fig. 2From: Epidemiological study of hepatitis B and hepatitis C infections in Northeastern China and the beneficial effect of the vaccination strategy for hepatitis B: a cross-sectional studyComparison of the HBsAg-positive rates (a) and HBsAb-positive rate (b) of this study with those in the 2006 epidemiological serosurvey of hepatitis B in ChinaBack to article page