Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 May 29;217(2):88–93. doi: 10.5694/mja2.51585

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2022 The Authors. Medical Journal of Australia published by John Wiley & Sons Australia, Ltd on behalf of AMPCo Pty Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

PMC Copyright notice

graphic file with name MJA2-217-88-g001.jpg — * Semi‐rigid cup type respirator: cupped particulate respirator and surgical mask 1860 or 1860S (3M) (192 respondents); flat‐fold cup type: particulate respirator DE2322 (BYD Care) (66 respondents); duckbill type: ProShield (BSN Medical) or Fluidshield surgical masks (Halyard) (262 respondents); three‐panel flat‐fold type: Aura 9320A+ particulate respirator (3M) (194 respondents).

† 1 = poor; 2 = adequate; 3 = good; 4 = very good; 5 = excellent.