The global network led by the Oxford Maternal and Perinatal Health Institute (OMPHI) at the University of Oxford has today published, in the Lancet, the results of the ‘2022 INTERCOVID Study’ conducted in 41 hospitals across 18 countries.
To evaluate the impact of the COVID-19 Omicron variant on maternal and neonatal outcomes the researchers studied 1,545 pregnant women diagnosed with the variant and 3,073 non-diagnosed, concomitant pregnant women as controls. The study was conducted between 27 November, 2021, and 30 June, 2022, during which time Omicron was the variant of concern. Vaccine effectiveness against the variant was also assessed.