The older generation, there may be many people who have not been vaccinated against hepatitis B, do not know much about it, and even think that it is not good that I have not been vaccinated. Is hepatitis B vaccine really useful? Today, Dr. Clove will tell you whether hepatitis B vaccine is useful or not. Hepatitis B vaccine is very useful China is a big country with hepatitis B, and there are about 90 million people infected with chronic HBV in China. This figure also means that the positive rate of hepatitis B surface antigen in the general population in China is 7.18%. According to the 2014 National Epidemiological Survey of Hepatitis B, hepatitis B surface antigen (HBsAg) is Read More …