What are the ways of transmission of hepatitis B? Common routes of hepatitis B transmission: blood and blood products transmission, vertical transmission from mother to child, broken skin and mucous membrane transmission, and sexual contact transmission. Note: Daily work and living contacts, such as working in the same office (including sharing computers and office supplies), shaking hands, hugging, living in the same dormitory, eating in the same restaurant, sharing toilets, and other contacts without blood exposure, generally do not transmit hepatitis B virus, and transmission via blood-sucking insects (mosquitoes, bedbugs, etc.) has not been confirmed. What is mother-to-child transmission of hepatitis B? Mother-to-child transmission refers to the process by which HBsAg-positive mothers, especially those who are positive for HBsAg, HBeAg and HBVDNA, transmit hepatitis B virus to their fetuses or newborns during pregnancy and delivery, causing hepatitis B virus infection in their babies. Mother-to-child transmission is the main transmission route of hepatitis B in China, and it is estimated that more than 50% of infected people are infected by mother-to-child transmission. 60% of children born to hepatitis B mothers can be infected with hepatitis B virus within 2 years if they do not receive the vaccination, while 95% of children born to HBeAg-positive mothers are HBsAg-positive within one year, and the chance of infants being infected by their mothers after using combined immunization interventions is less than 10 percent.