Masks are approved for pandemic flu.
D003140:Communicable Disease Control / Q000295:instrumentation; D018795:Device Approval; D004196:Disease Outbreaks / Q000517:prevention & control; D004209:Disposable Equipment; D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control; D008397:Masks; D012134:Respiratory Protective Devices; D014481:United States; D014486:United States Food and Drug Administration