“As of July 29, 2023, Vaccine Safety Datalink surveillance found just 16.2% of pregnant people aged 18 to 49 years had received a COVID-19 booster vaccine, with only 8.3% of Black pregnant people and 9.6% of Latino pregnant people vaccinated during pregnancy,” Joshua T. B. Williams, assistant professor in the department of pediatrics at the University of Colorado School of Medicine and Ambulatory Care Services at Denver Health and Hospitals, and colleagues wrote.