CDC yet to release COVID data behind mask reversal

More than a day after issuing new guidance that vaccinated people should wear masks indoors – recommendations that are likely to affect millions of Americans in the form of private and public mask mandates – the Centers for Disease Control and Prevention has yet to release the data behind its decision. 

The lack of clarity on what exactly the agency is basing its decision on comes as states and cities across the country are working to vaccinate more of their citizens. And it's making some local officials reluctant to follow the CDC's advice on nearly universal...