The fundamental problem with assaulting18 and arresting people for not complying with mask rules is that there’s no evidence to support the idea that masks prevent the spread of the virus. In fact, the science tells us masks cannot block viruses.
SARS-CoV-2 has a diameter between 0.06 and 0.14 microns.19 Medical N95 masks — which are considered the most effective — can filter particles as small as 0.3 microns.20 Surgical masks, homemade masks, T-shirts and bandanas are even more porous.
At best, a mask may reduce the transmission of large respiratory droplets, but it does nothing to prevent the transmission of aerosolized particulates exhaled by asymptomatic or presymptomatic individuals with COVID-19.21 Health agencies’ own research show it’s a futile measure that only provides a false sense of security.
For example, the World Health Organization’s June 5, 2020, guidance memo22 on face mask use states “there is no direct evidence (from studies on COVID- 19 and in healthy people in the community) on the effectiveness of universal masking of healthy people in the community to prevent infection with respiratory viruses, including COVID-19.”
Similarly, a May 2020 policy review paper23 published in the Centers for Disease Control and Prevention’s journal, Emerging Infectious Diseases, concluded that “Our systematic review found no significant effect of face masks on transmission of laboratory-confirmed influenza.”
This is highly relevant, as the influenza virus is about twice the size of SARS-CoV-2. If masks cannot prevent transmission of influenza, they certainly cannot prevent transmission of SARS-CoV-2.Dr Mercola What Will It Take for Masks and Face Shields to End?