The Centers for Disease Control and Prevention announced guideline changes allowing most Americans to unmask indoors, which health experts say may be the first step in shifting the U.S. to an “endemic phase” of the pandemic. The agency said in a news briefing Friday afternoon it will be using different metrics to determine whether to recommend face coverings. Under the old guidelines, masks were recommended for people living in communities of substantial or high transmission, which applied to roughly 95% of U.S. counties. For more information, visit the link in our bio.