Face Masks and Social Distancing

Face Masks


https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/  "This study is
the first RCT of cloth masks, and the results caution against the use
of cloth masks. This is an important finding to inform occupational
health and safety. Moisture retention, reuse of cloth masks and poor
filtration may result in increased risk of infection."

https://www.acpjournals.org/doi/10.7326/M20-1342   "In conclusion,
both surgical and cotton masks seem to be ineffective in preventing
the dissemination of SARS–CoV-2 from the coughs of patients with
COVID-19 to the environment and external mask surface."

 "Following a recommendation that cloth masks be explored for use in
healthcare settings during the next influenza pandemic,3 The National
Institute for Occupational Safety and Health (NIOSH) conducted a study
of the filter performance on clothing materials and articles,
including commercial cloth masks marketed for air pollution and
allergens, sweatshirts, t-shirts, and scarfs.4

Filter efficiency was measured across a wide range of small particle
sizes (0.02 to 1 µm) at 33 and 99 L/min. N95 respirators had
efficiencies greater than 95% (as expected). For the entire range of
particles tested, t-shirts had 10% efficiency, scarves 10% to 20%,
cloth masks 10% to 30%, sweatshirts 20% to 40%, and towels 40%. All of
the cloth masks and materials had near zero efficiency at 0.3 µm, a
particle size that easily penetrates into the lungs."

"In sum, cloth masks exhibit very low filter efficiency. Thus, even
masks that fit well against the face will not prevent inhalation of
small particles by the wearer or emission of small particles from the

"A historical overview of cloth masks notes their use in US healthcare
settings starting in the late 1800s, first as source control on
patients and nurses and later as PPE by nurses.20 Kellogg, 21 seeking
a reason for the failure of cloth masks required for the public in
stopping the 1918 influenza pandemic, found that the number of cloth
layers needed to achieve acceptable efficiency made them difficult to
breathe through and caused leakage around the mask. We found no
well-designed studies of cloth masks as source control in household or
healthcare settings.

In sum, given the paucity of information about their performance as
source control in real-world settings, along with the extremely low
efficiency of cloth masks as filters and their poor fit, there is no
evidence to support their use by the public or healthcare workers to
control the emission of particles from the wearer."

 "The evidence is not sufficiently strong to support widespread use of
facemasks as a protective measure against COVID-19. However, there is
enough evidence to support the use of facemasks for short periods of
time by particularly vulnerable individuals when in transient higher
risk situations. "

https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article  "In this
review, we did not find evidence to support a protective effect of
personal protective measures or environmental measures in reducing
influenza transmission. Although these measures have mechanistic
support based on our knowledge of how influenza is transmitted from
person to person, randomized trials of hand hygiene and face masks
have not demonstrated protection against laboratory-confirmed
influenza..." and "We did not find evidence that surgical-type face
masks are effective in reducing laboratory-confirmed influenza
transmission, either when worn by infected persons (source control) or
by persons in the general community to reduce their susceptibility"

In conclusion, unless you are used to wearing a mask and the mask fits
properly there is a tendency to constantly adjust the mask, touch your
face, and scratch your nose not only making the mask irrelevant but
increasing your risk. After only a few minutes of wear, moisture
develops inside the mask trapping natural respiratory pathogens from
your nose and mouth causing potential reinfection and making the mask
more permeable to outside pathogens. Unless the mask is properly
vented, CO2 can build up which is very unhealthy causing headache,
dizziness and respiratory distress. This is a very concise summary of
key points 

Social Distancing

It turns out, as I wrote last month, “social distancing” is untested
pseudoscience particularly as it relates to halting the transmission
of the SARS-CoV-2 virus. On its website, the CDC provides no links to
any peer-reviewed social distancing studies that bolster its official

 "Very likely, you already instinctively know that the guidelines
suggesting that it’s somehow helpful to keep a six-foot space between
healthy people, even outdoors, is not based on science, but just an
arbitrary suggestion we’ve been conditioned to accept without

And your gut feeling would be right."

https://inside.upmc.com/shapiro-economy-roundtable/ (Dr Steven
Shapiro) "What we cannot do, is extended social isolation. Humans are
social beings, and we are already seeing the adverse mental health
consequences of loneliness, and that is before the much greater
effects of economic devastation take hold on the human condition."


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