Science Direct: Face mask fit modifications that improve source control performance

Face mask fit modifications that improve source control performance

Face masks reduce the expulsion of respiratory aerosols (called source control). * Poorly fitted masks allow respiratory aerosols to escape through face seal leaks. * Fit modifications improve the performance of face masks as source control devices. * Unmodified medical masks blocked ≥56% of cough aerosols and ≥42% of exhaled aerosols.

Highlights
• Face masks reduce the expulsion of respiratory aerosols (called source control).

• Poorly fitted masks allow respiratory aerosols to escape through face seal leaks.

• Fit modifications improve the performance of face masks as source control devices.

• Unmodified medical masks blocked ≥56% of cough aerosols and ≥42% of exhaled aerosols.

• An elastic brace over a mask blocked ≥95% of cough and ≥99% of exhaled aerosols.”

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