Large U.S. COVID-19 vaccine trials will exclude pregnant women for now

The first two COVID-19 vaccines to enter large-scale U.S. trials will not be tested in pregnant women this year, raising questions about how this vulnerable population will be protected from the coronavirus, researchers told Reuters. Moderna and Pfizer , which has partnered with Germany’s BioNTech <22UAy.F>, this week separately launched clinical trials that use a new and unproven gene-based technology. Drugmakers say they first need to make sure the vaccines are safe and effective more generally.