Abstract
The objective of the study was to determine vertical transmission rates of hepatitis C in 2 tertiary level maternity units. This was a retrospective review of all hepatitis C-positive mothers and their pregnancy outcomes. Of 74,629 deliveries, 559 liveborn infants were born to 545 hepatitis C mothers; the rate of antenatal hepatitis C infection was 0.7%. In the neonatal period, 423 infants tested negative for hepatitis C ribonucleic acid (RNA) (75.7%), 18 were positive (3.2%), and 118 infants were not tested or were lost to follow-up (21.1%). The overall vertical transmission rate is 18 of 441 (4.1%, 95% confidence interval 2.3% to 5.9%). The vertical transmission rate for infants following vaginal delivery or emergency cesarean in labor was no different when compared with those delivered by planned cesarean (4.2% vs 3.0%, P = NS). Among women in whom hepatitis C RNA was detected antenatally, this finding remained (7.2% vs 5.3%, P = NS). No case of vertical transmission was noted among hepatitis C RNA-negative mothers. This study reports a vertical transmission rate for hepatitis C of 4.1%. These results do not support a recommendation of planned cesarean to reduce vertical transmission of hepatitis C infection.
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