OSHA gives green light to use 'N95' respirators. Occupational Safety and Health Administration.
D018795:Device Approval; D006801:Humans; D016273:Occupational Exposure; D012134:Respiratory Protective Devices / Q000706:statistics & numerical data*; D014376:Tuberculosis / Q000517:prevention & control / Q000635:transmission*; D014481:United States; D014489:United States Occupational Safety and Health Administration