Hepatitis B triple positive carriers should be further examined for HBV-DNA quantification, as people with hepatitis B triple positive have also had their HBV-DNA turn negative after antiviral treatment. If the HBV-DNA load is positive, it is usually infectious. Hepatitis B is mainly transmitted through the blood route, and sharing syringes with a person with hepatitis B is the greatest risk of transmission, or sharing personal items, such as nail clippers, razors, and toothbrushes, with a person with hepatitis B can transmit hepatitis B virus through broken skin. In addition, invasive tests and treatments can be contracted when medical equipment is shared with a person with hepatitis B and is not strictly sterilized. Adolescents are currently infected with hepatitis B virus, basically through vertical transmission of infection from mother to child. For pregnant women with hepatitis B virus, blocking treatment is given to newborns within 12 hours of delivery, and anti-hepatitis B immunoglobulin and hepatitis B vaccine can be administered.