Hepatitis B virus carriers are not usually hereditary, but may infect their offspring from their mothers through vertical transmission. Hepatitis B virus infection is not a genetic disease, but a type of infectious disease. Hepatitis B virus can be transmitted from mother to child, blood, sexually, and through close contact. Carrying the hepatitis B virus does not cause genetic changes in the body and therefore does not result in heredity. Although the hepatitis B virus is not passed on to the offspring, a mother who carries the hepatitis B virus may pass it on to her newborn through the bloodstream during childbirth. Therefore, if the mother is a Hepatitis B carrier, the baby should be injected with anti-Hepatitis B immunoglobulin and Hepatitis B vaccine immediately after birth to effectively prevent the baby from being infected by the Hepatitis B virus.