On Friday, Joe Biden’s U.S. Centers for Disease Control and Prevention (CDC) updated its guidance on mask-wearing.

The Daily Wire reports:

The Wall Street Journal reported, “The Centers for Disease Control and Prevention on Friday changed the metrics it uses to assess Covid-19 risk by county across the U.S. Risk will now be assessed based on three factors, the CDC said: new Covid-19 cases per 100,000 residents in the past seven days; new Covid-19-related hospital admissions; and the percentage of hospital beds occupied by Covid-19 patients.”

The agency is now using three different levels to communicate the local level of COVID-19 risk: low, medium, and high. The agency will publish the levels for each county on its website.

The CDC noted, if the local level is low-risk, people should “[w]ear a mask based on your personal preference, informed by your personal level of risk”; if it is medium risk, immunocompromised or people at high risk for serious illness should speak with their health care provider about additional measures, like mask-wearing “or respirators indoors in public.” The agency added, for medium-risk areas, “If you live with or have social contact with someone at high risk for severe illness, consider testing yourself for infection before you get together and wearing a mask when indoors with them.”

For high-risk areas, the CDC said people should still wear a well-fitting mask inside in public, as well as in K-12 schools. If someone is immunocompromised or at severe risk, they should “[w]ear a mask or respirator that provides you with greater protection.”