Early in the pandemic, mask-wearing policies were consistently associated with decreased transmission of SARS-CoV-2. At that time, the masks worn were generally made of cloth and often improvised. The ...

A team of researchers studying the effectiveness of different types of face masks has found that in order to provide the best protection against COVID-19, the fit of a mask is as important, or more ...

Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...

Taking steps to improve the way medical masks fit can protect wearers from about 96 percent of the aerosol particles thought to spread the coronavirus, a study by the U.S. Centers for Disease Control ...

Erica South, a nurse in the emergency department at UNC REX Hospital, tightly positions her N-95 mask. Ethan Hyman [email protected] It may be time to reevaluate your mask situation. The latest ...