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RecruitingDrug trial

Comparison of TAF and TDF in Preventing Mother-to-Child Transmission of HBV in Pregnancies With High Viral Loads

The main objective of this study is to compare the mother-to-infant transmission rates of hepatitis B between pregnant women receiving treatment with tenofovir alafenamide and those receiving treatment with tenofovir disoproxil fumarate, after administering the hepatitis B vaccine and hepatitis B immunoglobulin to their infants at birth. Investigators define the mother-to-infant transmission rate of hepatitis B as the proportion of infants who are HBsAg positive and have serum HBV DNA \>20 IU/mL at 28 weeks of age among all live births in the experimental group. Additionally, this study will also compare the incidence of congenital defects/malformations in infants born to mothers treated with tenofovir alafenamide and tenofovir disoproxil fumarate during the perinatal period to assess drug safety.

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