Masks are useless.
https://www.who.int/publications/i/i...ncov)-outbreak
Page 8
'Guidance on mask use in community settings
Evidence on the protective effect of mask use in
community settings
At present there is only limited and inconsistent scientific
evidence to support the effectiveness of masking of healthy
people in the community to prevent infection with respiratory
viruses, including SARS-CoV-2 (75). A large randomized
community-based trial in which 4862 healthy participants
were divided into a group wearing medical/surgical masks
and a control group found no difference in infection with
SARS-CoV-2 '