Compared to coronavirus cases earlier in the pandemic, infections with the Delta variant lead to worse outcomes for unvaccinated pregnant women, new data suggests.
Doctors studied 1,515 pregnant women with Covid-19 who received care in Dallas in the US from May 2020 through to September 2021.
Overall, 82 women – 81 of whom were unvaccinated – developed severe illness, including 10 who needed ventilators and two who died, Reuters reports.
The proportion of severe or critical cases among pregnant women was around 5% until early 2021, and were “largely nonexistent” in February and most of March 2021, the researchers said.
In late summer, during the peak of the surge of the Delta variant, the proportion of pregnant Covid-19 patients requiring hospitalisation jumped to 10% to 15%, they reported in the American Journal of Obstetrics and Gynecology.