Breastfeeding Initiation in People With Hepatitis C Virus Infection in the United States.

OBJECTIVE

To evaluate breastfeeding initiation rates among people living with and without hepatitis C virus (HCV) infection during pregnancy and to identify characteristics associated with breastfeeding initiation.

METHODS

We conducted a cross-sectional analysis of individuals who had a live birth in the United States from 2016 to 2021 using the National Center for Health Statistics birth certificate data. We grouped participants by whether they had HCV infection during pregnancy. Using propensity-score matching, we assessed the association between breastfeeding initiation before hospital discharge , defined as neonates receiving any parental breast milk or colostrum, and HCV infection during pregnancy in a logistic regression model. We also assessed factors associated with breastfeeding initiation among those with HCV infection.

RESULTS

There were 96,896 reported cases (0.5%) of HCV infection among 19.0 million births that met inclusion criteria during the study period. Using propensity-score matching, we matched 87,761 individuals with HCV infection during pregnancy with 87,761 individuals without HCV infection. People with HCV infection during pregnancy were less likely to initiate breastfeeding compared with those without HCV infection (51.5% vs 64.2%, respectively; odds ratio 0.59, 95% CI, 0.58-0.60, P <.001). Characteristics associated with higher rates of breastfeeding initiation among individuals with HCV infection included a college degree (adjusted odds ratio [aOR] 1.22, 95% CI, 1.21-1.24); self-identified race or ethnicity as Native Hawaiian or Pacific Islander (aOR 1.22, 95% CI, 1.06-1.40), Asian (aOR 1.09, 95% CI, 1.06-1.13), or Hispanic (aOR 1.09, 95% CI, 1.08-1.11); private insurance (aOR 1.07, 95% CI, 1.06-1.08); nulliparity (aOR 1.09, 95% CI, 1.08-1.10), and being married (aOR 1.08, 95% CI, 1.07-1.09). Characteristics associated with not breastfeeding before hospital discharge included receiving no prenatal care (aOR 0.81, 95% CI, 0.79-0.82), smoking during pregnancy (aOR 0.88, 95% CI, 0.88-0.89), and neonatal intensive care unit admission (aOR 0.92, 95% CI, 0.91-0.93).

CONCLUSION

Despite leading health organizations' support for people living with HCV infection to breastfeed, our study demonstrates low breastfeeding initiation rates in this population. Our findings highlight the need for tailored breastfeeding support for people with HCV infection and for understanding the additional effects of human immunodeficiency virus (HIV) co-infection, HCV treatment, and concurrent substance use disorders on breastfeeding initiation.