Effectiveness of different types of mask in aerosol dispersion in SARS-CoV-2 infection.

ABSTRACT:

Objective

To compare the effectiveness of different mask types in limiting the dispersal of coughed air.

Method

The Schlieren method with a single curved mirror was used in this study. Coughed air has a slightly higher temperature than ambient air, which generates a refractive index gradient. A curved mirror with a radius of curvature of 10 m and a diameter of 60 cm was used. The spread of the cough wavefront was investigated among five subjects wearing: (1) no mask; (2) a single surgical mask; (3) a double surgical mask; (4) a cloth mask; (5) a valveless N95 mask; and (6) a valved N95 mask.

Results

All mask types reduced the size of the contaminated region significantly. The percentage reduction in the cross-sectional area of the contaminated region for the same mask

SUBMITTER: Tanisali G 

PROVIDER: S-EPMC8325008 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature