Make sure that you’re wearing a mask even though it’s outdoors. There are lots of people packed around you, wearing a three-ply surgical mask.” “Don’t wear a cloth mask,” she continued.

(Some surgical masks are made of paper.) Then add a good-quality cloth mask. But don't keep piling on masks, Marr warns; just one additional mask is plenty. If your masks become too hard to breathe ...

Rice researchers 3D-printed these heads, fitted them with N95s and their own surgical mask hacks, and hooked them up to a particle measurement machine—called a Portacount —they acquired off eBay.

Those cloth masks are “ little more than facial decorations,” Dr. Leana Wen, a public health professor at the Milken Institute School of Public Health at the George Washington University, said ...

As the Omicron variant spreads, it’s time to upgrade from your cloth face masks. Experts explain why medical-grade masks – such as surgical/disposable masks and N95 and KN95 respirators ...