There is a recommendation for universal screening of Hepatitis B surface antigen in pregnancy. Which antiviral medication is recommended for prevention of Hep B vertical transmission in pregnancy? Is there a antiviral medication approved for Hepatitis C in pregnancy? In this session, we will review new data which is soon-to-be released in the American Journal of OB/GYN (Gray Journal) reviewing antepartum (maternal) antiviral medication used to prevent mother to child transmission of Hepatitis B. We will also review the SMFM guidelines for hepatitis B viral infection during pregnancy.