Wearing a mask in public is basically the norm these days (or at least, it should be). But let's be real, surgical masks aren't perfect. Namely, they can have a loose fit and allow potentially ...

We are now in the midst of another surge in COVID-19 cases caused by the new omicron variant. The variant appears to be significantly more contagious than the delta variant, so you may be wondering if ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we may earn a commission. Learn more. Fewer people wear face masks than during the Covid-19 ...

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 ...