New York Times
Opinion | The Mask Mandates Did Nothing. Will Any Lessons Be Learned?
16 hours ago
Opinion
After all we have been told,,, that is a bit unnerving.
New York Times-------------------------
Opinion | The Mask Mandates Did Nothing. Will Any Lessons Be Learned?
"a425couple" wrote in message news:VKsJL.833673$Tcw8.341067@fx10.iad...
On 2/22/23 09:40, a425couple wrote:
New York Times-------------------------
Opinion | The Mask Mandates Did Nothing. Will Any Lessons Be Learned?
This says masks do help, though the effect is difficult to measure. https://www.pnas.org/doi/10.1073/pnas.2119266119
"We find that population mask wearing notably reduced SARS-CoV-2
transmission (mean mask-wearing levels corresponding to a 19% decrease
in R)."
"In light of these results, policy makers can effectively reduce
transmission by intervening to increase mask wearing."
"a425couple" wrote in message news:VKsJL.833673$Tcw8.341067@fx10.iad...
On 2/22/23 09:40, a425couple wrote:
New York Times-------------------------
Opinion | The Mask Mandates Did Nothing. Will Any Lessons Be Learned?
This says masks do help, though the effect is difficult to measure. https://www.pnas.org/doi/10.1073/pnas.2119266119
"We find that population mask wearing notably reduced SARS-CoV-2
transmission (mean mask-wearing levels corresponding to a 19% decrease in R)."
"In light of these results, policy makers can effectively reduce
transmission by intervening to increase mask wearing."
On 2/22/23 16:59, Jim Wilkins wrote:
"a425couple" wrote in message news:VKsJL.833673$Tcw8.341067@fx10.iad...
On 2/22/23 09:40, a425couple wrote:
New York Times-------------------------
Opinion | The Mask Mandates Did Nothing. Will Any Lessons Be Learned?
This says masks do help, though the effect is difficult to measure.
https://www.pnas.org/doi/10.1073/pnas.2119266119
"We find that population mask wearing notably reduced SARS-CoV-2
transmission (mean mask-wearing levels corresponding to a 19% decrease
in R)."
"In light of these results, policy makers can effectively reduce
transmission by intervening to increase mask wearing."
Well..... this is what I read from there:
"Abstract
The effectiveness of mask wearing at controlling severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission has been unclear. While masks are known to substantially reduce disease
transmission in healthcare settings [D. K. Chu et al., Lancet 395, 1973–1987 (2020); J. Howard et al., Proc. Natl. Acad. Sci. U.S.A. 118, e2014564118 (2021); Y. Cheng et al., Science eabg6296 (2021)], studies
in community settings report inconsistent results [H. M. Ollila et al., medRxiv (2020); J. Brainard et al., Eurosurveillance 25, 2000725 (2020);
T. Jefferson et al., Cochrane Database Syst. Rev. 11, CD006207 (2020)].
Most such studies focus on how masks impact transmission, by analyzing
how effective government mask mandates are. However, we find that
widespread voluntary mask wearing, and other data limitations, make
mandate effectiveness a poor proxy for mask-wearing effectiveness. We directly analyze the effect of mask wearing on SARS-CoV-2 transmission, drawing on several datasets covering 92 regions on six continents,
including the largest survey of wearing behavior (n 20 million) [F. Kreuter et al.,
https://gisumd.github.io/COVID-19-API-Documentation (2020)]. Using a
Bayesian hierarchical model, we estimate the effect of mask wearing on transmission, by linking reported wearing levels to reported cases in
each region, while adjusting for mobility and nonpharmaceutical
interventions (NPIs), such as bans on large gatherings. Our estimates
imply that the mean observed level of mask wearing corresponds to a 19% decrease in the reproduction number R. We also assess the robustness of
our results in 60 tests spanning 20 sensitivity analyses. In light of
these results, policy makers can effectively reduce transmission by intervening to increase mask wearing."
So, lots of "unclear", "inconsistent" ---
"Bob Martin" wrote in message news:k5r95sF40ieU1@mid.individual.net...
Common sense tells you masks must make a difference,
and every little helps.
------------------------
Their effectiveness is tested, not just assumed. https://www.nelsonlabs.com/testing/respirator-pre-submission-tests-niosh/
During Army basic training the effectiveness of gas masks was
demonstrated by releasing tear gas into a room-full of us, then having
each recruit remove his mask and state his name to the drill sergeants.
Many didn't complete their names before rushing outside to recover. I
lasted long enough to tell them the gas was alpha-chloroacetophenone
before they ordered me out. As a "college boy" I had to show toughness.
"Bob Martin" wrote in message news:k5r95sF40ieU1@mid.individual.net...
Common sense tells you masks must make a difference,
and every little helps.
------------------------
Their effectiveness is tested, not just assumed. https://www.nelsonlabs.com/testing/respirator-pre-submission-tests-niosh/
During Army basic training the effectiveness of gas masks was
demonstrated by releasing tear gas into a room-full of us, then having
each recruit remove his mask and state his name to the drill sergeants.
Many didn't complete their names before rushing outside to recover. I
lasted long enough to tell them the gas was alpha-chloroacetophenone
before they ordered me out. As a "college boy" I had to show toughness.
"Keith Willshaw" wrote in message news:ttd9es$2jf83$1@dont-email.me...
There are twi dufferent issues here. Masks are certainly useful in
preventing casualties from chemical sources. As young man working on a chlorine plant we were trained using tear gas as mentioned. We had just
ome major release and the experience paid off, there were no major casualties.
When it comes to bio hazards the main thing masks do is reduce the transmission of the virus rather than its inhalation. Covid virus
transmisson is grealy reduced by a simple mask and combined with social distancing is quite effective. In 202o my mother was in a care home and
the use of masks and gloves by the STAFF was very effective in keeping
covid out, there were no fatalities in he home, in another just 1/2 mile
away they did not enforce this and 23 residents died.
---------------------
My brother was in an elder care facility that stayed disease free
through enforcement of the recommended practices. They worked when
everyone followed them.
My brother was in an elder care facility that stayed disease free
through enforcement of the recommended practices. They worked when
everyone followed them.
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