Pregnant women with COVID-19 may be more likely to have a preterm birth. But they don't have an increased risk of stillbirth or baby death soon after birth, researchers found. … None of the women's babies died from COVID-19, and the women didn't have higher-than-normal rates of stillbirth or low birth weight babies, according to the study. … The rate of preterm birth among the U.S. women was almost 16%, which is 57% higher than the national average of 10%.