KF94 Masks Block About 94% of Viral Particles - Consider Them For COVID-19 Protection
KF94 Masks Block About 94% of Viral Particles - Consider Them For COVID-19 Protection PopSugar 1/26/2021 Samantha Brodsky © Getty / Nenad Stojnev KF94 Masks Block About 94% of Viral Particles - Consider Them For COVID-19 Protection What Are KF94 Masks? KF94 masks are premium face masks made in South Korea - and Sonali Advani, MBBS, assistant professor of medicine at Duke University, told NPR that the "KF" in "KF94" stands for "Korean filter." According to The New York Times, it blocks 94 percent of viral particles (hence the "94" in "KF94"). It has ear loops like a cloth...
Source: msn.com