P95 and N95 are rating classifiers for masks manufactured to keep people from inhaling dust and other small particles in unsafe environments.

As health officials scramble to minimize spread of the highly contagious Omicron variant, many experts have recommended that people switch from cloth or surgical masks to more-protective N95 and KN95 ...

During an appearance on CNN Tuesday, White House medical adviser Dr. Anthony Fauci said people using cloth masks should consider upgrading to surgical-grade masks as the highly transmissible omicron ...

The air in Delhi has turned grey, heavy and hazardous once again. With the Air Quality Index (AQI) soaring past 400 and even entering the “hazardous” category in many zones, ordinary walks or commutes ...