@PaulScott005 Here is evidence that they work - over 90 studies (including a meta analysis of 21).

Meta analysis of 21 studies:
https://t.co/GBymOZJY0m

Recent study in Germany:
https://t.co/irHP0wDDCn

70 various studies showing impact of masks on

More from Facemasks

An August 2020 review by a German professor in virology, epidemiology and hygiene found that there is no evidence for the effectiveness of cloth face masks and that the improper daily use of masks by the public may in fact lead to an increase in infections.

Link, 👇

https://t.co/fTa5BJlHfC

May 2020 cross-country study by the University of East Anglia (preprint) found that a mask requirement was of no benefit and could even increase the risk of

May 2020 meta-study on pandemic influenza published by the US CDC found that face masks had no effect, neither as personal protective equipment nor as a source control.

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https://t.co/6cRR2B3jBE
Viruses and other pathogens are often studied as stand-alone entities, despite that, in nature, they mostly live in multispecies associations called biofilms—both externally and within the host.

https://t.co/FBfXhUrH5d


Microorganisms in biofilms are enclosed by an extracellular matrix that confers protection and improves survival. Previous studies have shown that viruses can secondarily colonize preexisting biofilms, and viral biofilms have also been described.


...we raise the perspective that CoVs can persistently infect bats due to their association with biofilm structures. This phenomenon potentially provides an optimal environment for nonpathogenic & well-adapted viruses to interact with the host, as well as for viral recombination.


Biofilms can also enhance virion viability in extracellular environments, such as on fomites and in aquatic sediments, allowing viral persistence and dissemination.