COVID-19 Cases and Disease Severity in Pregnancy and Neonatal Positivity Associated With Delta (B.1.617.2) and Omicron (B.1.1.529) Variant Predominance.

Adhikari, Emily H; MacDonald, Lorre; SoRelle, Jeffrey A; Morse, Jessica; Pruszynski, Jessica; Spong, Catherine Y · JAMA · 2022

retrospective_cohort · Level III

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Abstract

This study examines infections, illness severity, vaccinations, and early neonatal infections among obstetric patients during the pre-Delta, Delta, and Omicron periods of the COVID-19 pandemic.

Medical subject headings