Health authorities and media loudspeakers have flip-flopped considerably on the matter of face masks. Only a few weeks ago they were denounced as pointless, sometimes even dangerous. People would lower their guards and jump out of the next window if given the false sense of security that ships with cloth on the nose. Endless experts and specialists on TV removed them from their faces with a care that signalled clearly for everybody to see how the mask, once worn, becomes radioactive at least, if not worse. And now you must wear it. This is confusing, but I explain it all in the video.
sources:
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The immunohistochemistry study:
https://www.biorxiv.org/content/10.1101/2020.04.18.047951v1.full.pdf
The T-cell study:
https://www.nature.com/articles/s41423-020-0424-9.pdf
The concentration of virus in nose correspondence:
https://www.nejm.org/doi/full/10.1056/NEJMc2001737
The RNA sequence database analysis study to identify susceptible tissue:
https://www.nature.com/articles/s41368-020-0074-x
The relationship of pathogen exposure and disease severity in other viruses:
https://www.ncbi.nlm.nih.gov/pubmed/27893998
