How do KF94s stack up against KN95s and other masks?

While some may assume that KN95 and N95 masks perform better due to the 1% difference, “all [KN95, N95, KF94] are effective at preventing COVID-19 infection and are considered high-quality masks,” Bernadette Boden-Albala, MPH, DrPH, director, and founding dean of the program in public health at the University of California, Irvine, told Verywell.