more commonly known as face masks, are meant to keep health care and emergency workers safe from chemicals and infectious particles. Surgical masks can be helpful if you are sick, as they prevent ...

Rapidly growing Los Angeles wildfire explodes to 1,260 acres in hours Single-strap paper dust and surgical masks do not adequately protect against wildfire smoke. The most effective protection ...

Léelo en español. As the more highly transmissible omicron variant continues to be the country’s dominant Covid strain, health experts are recommending adults and children upgrade from cloth or ...