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Masks and respirators for health care workers
| Surgical mask | N-95 respirator | N-95 cartridge mask | Powered air purifying respirator | |
| Protection | Droplet | Aerosol | Aerosol | Aerosol |
| Disposable | Yes | Yes | Filter only | No |
| Fit testing | No | Yearly | Yearly | Yearly |
| Power source | No | No | No | Battery |
| Stockpiling | Yes | Yes | No | No |
| Cost | Very low | Low | High | Very high |
