CDC to Recommend Indoor Masks Again, Even for Some Vaccinated People

The U.S. Centers for Disease Control and Prevention (CDC) is expected to recommend that vaccinated people in parts of the country wear masks while indoors, reversing a decision it made two months ago.

Federal officials with knowledge of the decision told news agencies the CDC is expected to make the announcement later Tuesday, based on surging numbers of new cases in regions with low vaccination rates.    The rising caseload is driven by the highly contagious delta variant of the coronavirus that causes COVID-19.   There has also been a rise in cases of so-called breakthrough infections among fully vaccinated people, suggesting the delta variant may be able to cause such infections more often than previous strains of the virus.