LAUSR

OBJECTIVE To determine whether assisted conception increases the risk for mother-to-child transmission of hepatitis B virus (HBV) infection compared with natural conception. DESIGN Prospective cohort study. SETTING Research laboratory. PATIENT(S) A total of 305 children, 176 born with assisted conception and 129 born with natural conception, were born to a total of 251 hepatitis B surface antigen- (HBsAg-) positive women. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) The seropositive rates of HBsAg in children at birth and HBV infection rates at 9-15 months of age. RESULT(S) Overall, 7.5% (23/305) of children were HBsAg-positive at birth. The rate of HBsAg-positive children at birth did not significantly differ between children in the assisted conception group compared with those in the natural conception group (6.3% [11/176] vs. 9.3% [12/129]). Multivariate logistic regression analysis showed that conception method is not related to the rate of HBsAg-positive children at birth. All children who were positive for HBsAg at birth and were followed up for 9-15 months became negative for HBsAg after hepatitis B immunization. CONCLUSION(S) Assisted conception does not increase the risk for mother-to-child transmission of HBV compared with natural conception.