Clinical Trial on the Efficacy of Different Masks With and Without a Peripheral Sealing Device, Against Covid-19

The individuals used a Peripheral Sealing Device on a surgical mask or a filtering face piece mask and were submitted to a qualitative fit test, regulated by the Occupational Security and Health Administration (USA).

The individuals used a IIR surgical mask with a filtering face piece mask and were submitted to a qualitative fit test, regulated by the Occupational Security and Health Administration (USA).