Hepatitis B is transmitted in three ways: sexual transmission, blood transmission, and mother-to-child transmission (vertical transmission). Hepatitis B is not transmitted through the respiratory and digestive tracts, so you will not be infected with the hepatitis B virus from daily work, shaking hands, hugging or eating. What are the specific ways of transmission of hepatitis B? 1.Sexual transmission: transmission between sexual partners. 2.Blood transmission: transmission through blood-borne injection by importing whole blood, plasma, serum or other blood products. 3, mother-to-child transmission: transmission through the placenta (such transmission vaccination can not be protected, but rare). 4.Transmission during delivery: Most of the transmission can be caused by maternal blood leaking into the fetus through the placenta’s microscopic fissures during delivery, or by the fetus inhaling amniotic fluid, or by the infant coming into contact with maternal vaginal secretions). 5.Transmission after delivery (breastfeeding or contact with mother’s saliva). 6, medical device transmission: infection caused by contaminated medical devices or unsafe injections. 7, close contact transmission: sharing of dental tools and other household items.