Updated: December 2021
First published: July 2020

An overview of the current evidence regarding the effectiveness of face masks.

Contents: A) Published studies ⇓ B) Real-world evidence ⇓ C) N95/FFP2 masks ⇓ D) Additional aspects ⇓ E) The aerosol issue ⇓ F) Contrary evidence ⇓ G) Mask-related risks ⇓ H) Conclusion ⇓

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