The Centers for Disease Control and Prevention (CDC) has reversed its indoor mask policy.
On Tuesday, the agency recommended that people should wear masks regardless of their COVID-19 vaccination status. However, the indoor mask policy is only recommended in areas of "substantial or high transmission."
As the rate of COVID infection with Delta variant has been increasing in the U.S., CDC was forced to reverse its mask guidance in some places.
"The delta variant is showing every day its willingness to outsmart us and be an opportunist," said CDC director Rochelle Walensky. "This new science is worrisome and unfortunately warrants an update to our recommendations."
"CDC recommends that everyone in K-12 schools wear a mask indoors, including teachers, staff, students and visitors, regardless of vaccination status," she added.
This reversal comes after the CDC had announced that fully vaccinated people were not required to wear masks except under certain circumstances just two months ago.
Per Johns Hopkins University, the U.S. is averaging over 57,000 new daily cases. Currently, roughly 50% of the U.S. population is fully vaccinated.