Prevalence of Repeat Prenatal HIV Screening in New York State.

New York State Department of Health (NYSDOH) recommends that all pregnant patients receive human immunodeficiency virus (HIV) screening during pregnancy. This study assessed the prevalence of repeat prenatal HIV testing and factors associated with receipt of the recommended tests. Data from the NYSDOH newborn screening program were used to randomly select pregnant persons without HIV who delivered a liveborn infant in 2017. Receipt of repeat testing was defined as an initial HIV test in the first or second trimesters and the final in the third trimester (relaxed); or an initial test in the first trimester and the final in the third trimester (strict). Relative risks (RRs) and 95% confidence intervals were calculated in bivariate analyses. Adjusted RRs were calculated to determine associations between demographic and clinical factors and receipt of repeat HIV testing. The cohort included 2,225 individuals. Roughly one quarter (24%) received the recommended tests in the first or second and third trimesters and 17% received them in the first and third trimesters. Individuals who reported Hispanic or Asian race/ethnicities, had government-funded insurance, started prenatal care in the first trimester, delivered in New York City, or received prenatal hepatitis C virus screening were significantly more likely to receive repeat testing using either definition. Despite the benefits and cost-effectiveness, the prevalence of repeat prenatal HIV screening during the third trimester remains persistently low. Improved messaging and targeted education and resources to assist prenatal providers could reinforce the importance of repeat testing and reduce residual perinatal HIV transmission.