Association of Routine Chlamydia trachomatis Screening During Pregnancy and Seroprevalence of Chlamydial Infection in Children, 1991-2015.

We performed a seroepidemiologic study of sera from children in Brooklyn, New York, before and after the implementation of prenatal chlamydial screening almost 20% of children aged ≤10 years in the prescreening group had anti-Chlamydia trachomatis immunoglobulin G compared with none in the postscreening group.