We evaluated the birth rate of Down syndrome (DS) in the CDC birth certificate online database. From 2016 to 2025, live birth incidence could range greatly (depending on the proportion of unknown cases that are counted as DS+) due to relatively high numbers of unknown/not stated status. The annual live birth incidence of DS in live-born infants using CDC birth certificate data from 2016 to 2025 shows a wide range of potential birth rates as calculated here, due to relatively high numbers of unknown/not stated DS status. Although our findings overlap with published data, future studies are needed to further evaluate the current birth rate of DS in the US.
Santoro et al. (Tue,) studied this question.