Disposable surgical mask

Medical protective mask

The KN95 mask is a Chinese alternative to the N95, and BuzzFeed reports that the U.S. centers for disease control (CDC) says it is as effective as the N95 and is one of the "appropriate alternatives."
According to 3M, the world's largest mask maker, the KN95 is "equivalent" to the N95 mask and "can be expected to function very similarly".