MINNEAPOLIS (WCCO) — Minnesota-based retailers are updating their face mask policies for employees in light of new Centers For Disease Control guidance.

On Monday, Target announced all workers in areas with “substantial or high risk” of COVID transmission as defined by the CDC will be required to wear face masks starting Tuesday, whether or not they are fully vaccinated.

“Target continues to recommend face coverings for unvaccinated team members and guests at all stores across the country,” the retailer said in a statement. “Effective Tuesday, August 3, based on the CDC’s updated guidance, we’ll require face coverings for our team members and strongly recommend face coverings for all guests in areas with substantial or high risk of transmission, as defined by the CDC.”

Meanwhile, Stillwater-based grocer Cub said all “associates,” vaccinated and unvaccinated, will be required to wear masks while working starting Tuesday. Cub also recommends customers wear masks while shopping.

The CDC changed its guidance after data showed that while vaccines still protect people from getting seriously sick from COVID and the Delta variant, fully vaccinated individuals can still be contagious.

According to the CDC, roughly half of Minnesota counties are in at least a substantial risk of COVID transmission as of Monday, including most of the Twin Cities. At least five counties are considered high risk.