Vertical transmission of hepatitis C: Testing and health-care engagement

Aim To investigate hepatitis C virus (HCV) testing patterns and engagement with health care for women positive for HCV antibodies (anti-HCV) in pregnancy and their children through pregnancy and the first 2 years of the child's life. Methods At a large inner-city Australian hospital from 2010 to 2012, anti-HCV positive pregnant women were recruited into a cohort study from pregnancy to 2 years post-delivery. Maternal and child data were collected by questionnaire and medical record extraction. Results During the study 29 women participants delivered 31 children. HCV RNA was detected in 64% (18/28) of pregnancies, with injecting drug use, the most likely route of maternal infection. Relatively high maternal health-care engagement during pregnancy reduced after delivery. There was evidence of ongoing illicit drug use in the majority of women. Of the children, 58% (18/31) had some HCV testing confirmed but complete testing was confirmed for only 10% (3/31). Largely, testing was incomplete or unknown. No vertical transmission was identified. Forty-two percent (13/31) of children were placed in out-of-home-care. Conclusions Potentially, there is a high risk of inadequate or incomplete HCV testing of vulnerable children. Ongoing maternal drug use, poor maternal health-care engagement and placement in out-of-home-care may increase the risk. Complete testing of all children at risk of vertically acquired HCV needs to be ensured.