The transmission of hepatitis B virus leading to acute hepatitis B results from exposure to infectious blood or body fluids containing blood. You can catch acute hepatitis through sexual contact, blood transfusions, re-use of contaminated needles and syringes and transmission from mother to child during childbirth. Without intervention, a mother who is positive has a high chance of passing the infection to her baby at delivery. HBV can be transmitted between family members within households, possibly by contact of non-intact skin with secretions or saliva containing HBV.
Attribution: Avallain