The Facilities for Illness Management and Prevention issued new steerage in July, recommending indoor masks use in counties with excessive charges of transmission – even for vaccinated people.
The announcement got here as new research have proven breakthrough Covid infections in vaccinated people have simply as a lot viral load as contaminated people who find themselves unvaccinated.
As of Nov. 12, 87 % of U.S. counties, together with Puerto Rico’s municipalities, fall beneath the masks steerage. This map exhibiting the CDC’s suggestions shall be up to date day by day.
The delta variant, which officers have mentioned is extra contagious than the unique coronavirus pressure, is contributing to a fourth wave of infections and hospitalizations.
An space’s stage of virus transmissibility is dependent upon two components: the typical variety of circumstances relative to a county’s inhabitants and the Covid check positivity charge. The CDC recommends individuals put on masks indoors in counties that both common 50 or extra circumstances per 100,000 residents or have a check positivity charge equal to or larger than 8 %.