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The World Health Organization (WHO) Western Pacific Region set a target of eliminating mother-to-child transmission (MTCT) of hepatitis B virus (HBV) by 2030. To assess the feasibility of this target in China, we carried out an epidemiological study to investigate the status quo of MTCT in the real-world setting.  One thousand and eight hepatitis B surface antigen-positive pregnant women were enrolled at 10 hospitals. Immunoprophylaxis was administered to infants. In addition, mothers with HBV DNA level >2,000,000 IU/mL were advised to initiate antiviral therapy during late pregnancy. A health application called SHIELD was used to manage the study.  Nine hundred and five of the enrolled mothers, with 924 infants, completed the follow-up. Birth-dose hepatitis B vaccine and hepatitis B immunoglobulin were received by 99.7% and 99.7% of infants, respectively, within 24 h after birth. There were 446 mothers who received antiviral therapy, including 72.3% of the mothers with HBV DNA level >2,000,000 IU/mL and 21.0% of the mothers with HBV DNA level <2,000,000 IU/mL. Eight infants were infected with HBV. The overall rate of MTCT was 0.9%. Birth defects were rare (0.5% among infants with maternal antiviral exposure versus 0.7% among infants without exposure; =1.00).  The MTCT rate was lower than the WHO Western Pacific Region elimination MTCT target in this real-world study, indicating that a comprehensive management composed of immunoprophylaxis to infants and antiviral prophylaxis to mothers may be a feasible strategy to achieve the 2030 WHO elimination goal.

A Real-world Prospective Study of Mother-to-child Transmission of HBV in China Using a Mobile Health Application (Shield 01)