Maine will follow U.S. CDC guidance that came down Tuesday, recommending that everyone wear masks in public indoor settings, vaccinated or not, in areas where spread of coronavirus is considered high or substantial.

On Wednesday, the office of Governor Janet Mills announced that the state will follow the new guidance. Right now, York and Piscataquis counties are experiencing “substantial” levels of community transmission, which means the guidance only applies to those two counties.

The state says all teachers, staff and students should wear face coverings in K-12 schools, regardless of the area’s transmission level or vaccination status.

Maine’s statewide mask mandate ended in May.

The governor took the opportunity Wednesday to again encourage all Mainers to get vaccinated, as the highly contagious Delta variant becomes dominant around the world:

“As a result of their willingness to roll up their sleeves, 72 percent of eligible Maine people have been fully vaccinated – one of the best rates in the country. This has helped us keep our rates of COVID low compared to the rest of the nation, but the Delta variant remains a threat that we want to keep at bay as much as possible,” said Governor Janet Mills. “The most effective way to do that is to get vaccinated. We continue to strongly urge all people to protect themselves, their loved ones, and their communities by getting your shot. In the meantime, we recommend that Maine people follow the U.S. CDC’s updated public health recommendations.”