is hep b transmitted through saliva
Hepatitis B infection is caused by the hepatitis B virus (HBV). The virus is passed from person to person through blood, semen or other body fluids. Common ways HBV is transmitted include: 1  Sexual contact. 2  You may become infected if you have unprotected sex with an infected partner whose blood, saliva, semen or vaginal secretions enter your body. 3  Sharing of needles. 4  HBV is easily transmitted through needles and syringes contaminated with infected blood.