A pair of new US studies highlight the increased risks faced by pregnant women infected by SARS-CoV-2—particularly after the emergence of the Delta (B1617.2) variant—one finding nearly double the risk of stillbirth and the other showing five times the risk of death.The studies were published late last week in Morbidity and Mortality Weekly Report.Stillbirths rare but more of a risk with COVIDIn the first study, the Centers for Disease Control and Prevention (CDC) COVID-19 Response Team analyzed data from the Premier Healthcare Database Special COVID-19 Release, a large, hospital-based database from March 2020 to September 2021, a period that included the emergence and eventual dominance of Delta.Of all pregnant women in the database, 53.7%