EXPLAINER: Why masks are again advised for everyone indoors

  • FILE - A student wears a face mask while doing work at his desk at the Post Road Elementary School, in White Plains, N.Y., in this Thursday, Oct. 1, 2020, file photo. U.S. health officials say the highly contagious delta version of the coronavirus is behind changes to mask guidelines. The Centers for Disease Control and Prevention this week announced that fully vaccinated people should resume wearing masks indoors if they live in areas where the virus is surging. CDC officials said new information about the spread of the delta variant forced them to reverse course. The agency also said teachers and students everywhere should go back to wearing masks in schools.

    FILE - A student wears a face mask while doing work at his desk at the Post Road Elementary School, in White Plains, N.Y., in this Thursday, Oct. 1, 2020, file photo. U.S. health officials say the highly contagious delta version of the coronavirus is behind changes to mask guidelines. The Centers for Disease Control and Prevention this week announced that fully vaccinated people should resume wearing masks indoors if they live in areas where the virus is surging. CDC officials said new information about the spread of the delta variant forced them to reverse course. The agency also said teachers and students everywhere should go back to wearing masks in schools. Associated Press

  • FILE - Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, adjusts her face mask during a Senate Health, Education, Labor and Pensions Committee hearing on the federal coronavirus response on Capitol Hill in Washington, in this Thursday, March 18, 2021, file photo. Walensky says new mask-wearing guidance, coupled with higher rates of vaccination against COVID-19, could halt the current escalation of infections in 'a couple of weeks.' The director of the Centers for Disease Control and Prevention told 'CBS This Morning' she hopes more stringent mask-wearing guidelines and other measures won't be necessary as the country heads into the fall.

    FILE - Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, adjusts her face mask during a Senate Health, Education, Labor and Pensions Committee hearing on the federal coronavirus response on Capitol Hill in Washington, in this Thursday, March 18, 2021, file photo. Walensky says new mask-wearing guidance, coupled with higher rates of vaccination against COVID-19, could halt the current escalation of infections in 'a couple of weeks.' The director of the Centers for Disease Control and Prevention told 'CBS This Morning' she hopes more stringent mask-wearing guidelines and other measures won't be necessary as the country heads into the fall. Associated Press

 
 
Updated 7/28/2021 1:39 PM

U.S. health officials say the highly contagious delta version of the coronavirus is behind changes to mask guidelines

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