About The Study: In this prospective cohort study of 220 pregnant individuals with preterm and full-term deliveries, receipt of three or more compared with two doses of COVID-19 vaccine before delivery resulted in 10-fold higher cord anti-Spike antibody levels. Maternal antibody concentration appeared more important than delivery gestational age in determining cord anti-Spike antibody levels. The number of doses and timing considerations for COVID-19 vaccine in pregnancy should include individuals at risk for preterm delivery.
Authors: Alisa Kachikis, M.D., M.S., of the University of Washington in Seattle, is the corresponding author.
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(doi:10.1001/jamanetworkopen.2023.52387)
