Americans fully vaccinated against Covid-19 should go back to wearing masks in indoor public places in regions where the coronavirus is spreading rapidly, U.S. health authorities said on July 27.

The U.S. Centers for Disease Control and Prevention is set on July 27 to recommend fully vaccinated Americans wear masks indoors in at least some instances, as the more highly transmissible Delta variant of the coronavirus has led to a surge in infections, sources said.

People who received the one-dose Johnson & Johnson Covid-19 vaccine may need a booster shot to fend off some of the worrisome coronavirus variants now spreading worldwide, a study suggests.

U.S. President Joe Biden said the Centers for Disease Control is likely to advise that kids who have not been vaccinated against Covid-19 should wear masks when they return from summer holidays to school in the fall.

U.S. Surgeon General Vivek Murthy stood by federal guidance that those fully vaccinated against Covid-19 no longer needed to wear masks, while blaming social media companies for fueling vaccine misinformation.

Los Angeles County will reimpose its mask mandate during the weekend of July 16 in the latest sign that public health officials are struggling with an alarming rise in coronavirus cases tied to the highly contagious Delta variant.

The U.S. Centers for Disease Control and Prevention on July 9 updated its guidance to help reopen schools in the fall, including recommending masking indoors for everyone who is not fully vaccinated and three feet of distance within classrooms.

Texas Governor Greg Abbott on May 18 ordered all government entities in the state, including school districts, to lift mask mandates by week’s end, though existing guidelines for face-coverings in schools may remain in effect through June 4.

Disney World and other U.S. amusement parks updated their mask policy following the latest guidance from the Centers for Disease Control and Prevention (CDC).

Schools in the United States should continue to use masks for the 2020-2021 academic year as all students will not be fully vaccinated, the U.S. Centers for Disease Control and Prevention (CDC) said on May 15.