Increased COVID-19 Severity among Pregnant Patients Infected with SARS-CoV-2 Delta Variant, France

Abstract

We conducted a retrospective study of pregnant persons hospitalized for severe acute respiratory syndrome coronavirus 2 infection in France. Delta variant infection had a relative risk of 14.33 for intensive care unit admission and 9.56 for high supplemental oxygen support. The Delta variant might cause more severe illness during pregnancy.