A Thorough Analysis of Which is the Best Mask to Prevent COVID-19

Although N95 masks are the gold standard and were, until the spring of 2020, easily obtainable, good mask options exist, primarily certified KN95 masks and well-made, well-fitting, 3-layer cloth masks. Disposable surgical masks are also readily available but tend to leave gaps between the mask and face, reducing their usefulness. Electrical air purifying respirators that mimic powered air-purifying respirators (PAPRs) exist, but these devices would … Continue reading A Thorough Analysis of Which is the Best Mask to Prevent COVID-19