John Libbey Eurotext



Why we should wear masks (even handcrafted ones) Volume 24, issue 2, Mars-Avril 2020

Emeritus Professor of Medicine,
Aix-Marseille Université/APHM
Genomic & Structural Information
Laboratory (UMR 7256)
Mediterranean Institute of Microbiology
(FR 3479), Marseille, France
Member of the board of directors of the French society of virology until March 30, 2020
* Correspondence

In the controversy surrounding the usefulness of wearing a mask to stem the CoViD-19 epidemic, it is very irritating to see the “experts” and the medical world base their discourse only on the capacity of FILTRATION of the masks (“FFP2”, surgical, etc.). The SARS-CoV-2 “particle” (the virus) is a sphere with an approximate diameter of 125 nanometers, i.e. 0.125 micron. It is obvious that the manufacture of masks impermeable to objects that small (10 times smaller [...]