If you've ever worked with chemicals, you'd know the wrong kind of mask is worse than nothing at all because it traps the bad stuff next to your face
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WTF
- Thread starter kidfury
- Start date
Oh , yeah I saw that but didn’t realize you were responding to a hospital healthcare worker
And that the comparison was between cloth and medical masks , not cloth compared to no mask
Interesting study, but not what I thought you were referring to
Relevant to my wife, maybe, but not me
And that the comparison was between cloth and medical masks , not cloth compared to no mask
Interesting study, but not what I thought you were referring to
Relevant to my wife, maybe, but not me
Yeah, I was reading the post I responded to without the context of the one before that described the test
I dont work with chemicals
Let’s be honest here, I drink a lot of coffee, my breath is pretty toxic
https://www.researchgate.net/publication/340570735_Masks_Don't_Work_A_review_of_science_relevant_to_COVID-19_social_policy
2
Review of the Medical Literature
Here are key anchor points to the extensive scientific literature that establishes that wearing
surgical masks and respirators (e.g., “N95”) does not reduce the risk of contracting a verified
illness:
Jacobs, J. L. et al. (2009) “Use of surgical face masks to reduce the incidence of the
common cold among health care workers in Japan: A randomized controlled trial”,
American Journal of Infection Control, Volume 37, Issue 5, 417 - 419.
https://www.ncbi.nlm.nih.gov/pubmed/19216002
N95-masked health-care workers (HCW) were significantly more likely to
experience headaches. Face mask use in HCW was not demonstrated to provide
benefit in terms of cold symptoms or getting colds.
Cowling, B. et al. (2010) “Face masks to prevent transmission of influenza virus: A
systematic review”, Epidemiology and Infection, 138(4), 449-456.
doi:10.1017/S0950268809991658
Loading…
www.cambridge.org
review/64D368496EBDE0AFCC6639CCC9D8BC05
None of the studies reviewed showed a benefit from wearing a mask, in either
HCW or community members in households (H). See summary Tables 1 and 2
therein.
bin-Reza et al. (2012) “The use of masks and respirators to prevent transmission of
influenza: a systematic review of the scientific evidence”, Influenza and Other
Respiratory Viruses 6(4), 257–267.
https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1750-2659.2011.00307.x
“There were 17 eligible studies. … None of the studies established a conclusive
relationship between mask ⁄ respirator use and protection against influenza
infection.”
Smith, J.D. et al. (2016) “Effectiveness of N95 respirators versus surgical masks in
protecting health care workers from acute respiratory infection: a systematic review and
meta-analysis”, CMAJ Mar 2016, cmaj.150835; DOI: 10.1503/cmaj.150835
https://www.cmaj.ca/content/188/8/567
“We identified 6 clinical studies ... In the meta-analysis of the clinical studies,
we found no significant difference between N95 respirators and surgical
masks in associated risk of (a) laboratory-confirmed respiratory infection, (b)
influenza-like illness, or (c) reported work-place absenteeism.”
https://www.researchgate.net/publication/deref/https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpubmed%2F19216002
https://www.researchgate.net/publication/deref/https%3A%2F%2Fonlinelibrary.wiley.com%2Fdoi%2Fepdf%2F10.1111%2Fj.1750-2659.2011.00307.x
https://www.researchgate.net/publication/deref/https%3A%2F%2Fwww.cmaj.ca%2Fcontent%2F188%2F8%2F567
Offeddu, V. et al. (2017) “Effectiveness of Masks and Respirators Against Respiratory
Infections in Healthcare Workers: A Systematic Review and Meta-Analysis”, Clinical
Infectious Diseases, Volume 65, Issue 11, 1 December 2017, Pages 1934–1942,
https://doi.org/10.1093/cid/cix681
https://academic.oup.com/cid/article/65/11/1934/4068747
“Self-reported assessment of clinical outcomes was prone to bias. Evidence of a
protective effect of masks or respirators against verified respiratory infection
(VRI) was not statistically significant”; as per Fig. 2c therein:
Radonovich, L.J. et al. (2019) “N95 Respirators vs Medical Masks for Preventing
Influenza Among Health Care Personnel: A Randomized Clinical Trial”, JAMA. 2019;
322(9): 824–833. doi:10.1001/jama.2019.11645
https://jamanetwork.com/journals/jama/fullarticle/2749214
“Among 2862 randomized participants, 2371 completed the study and
accounted for 5180 HCW-seasons. … Among outpatient health care personnel,
N95 respirators vs medical masks as worn by participants in this trial resulted in
no significant difference in the incidence of laboratory-confirmed influenza.”
Long, Y. et al. (2020) “Effectiveness of N95 respirators versus surgical masks against
influenza: A systematic review and meta-analysis”, J Evid Based Med. 2020; 1- 9.
https://doi.org/10.1111/jebm.12381
https://onlinelibrary.wiley.com/doi/epdf/10.1111/jebm.12381
“A total of six RCTs involving 9 171 participants were included. There were no
statistically significant differences in preventing laboratory-confirmed influenza,
laboratory-confirmed respiratory viral infections, laboratory-confirmed
respiratory infection and influenza-like illness using N95 respirators and surgical
masks. Meta-analysis indicated a protective effect of N95 respirators against
laboratory-confirmed bacterial colonization (RR = 0.58, 95% CI 0.43-0.78). The
https://www.researchgate.net/publication/deref/https%3A%2F%2Facademic.oup.com%2Fcid%2Farticle%2F65%2F11%2F1934%2F4068747
https://www.researchgate.net/publication/deref/https%3A%2F%2Fjamanetwork.com%2Fjournals%2Fjama%2Ffullarticle%2F2749214
https://www.researchgate.net/publication/deref/https%3A%2F%2Fonlinelibrary.wiley.com%2Fdoi%2Fepdf%2F10.1111%2Fjebm.12381
4
use of N95 respirators compared with surgical masks is not associated with a
lower risk of laboratory-confirmed influenza
When I get up in the morning I have a narrow window of opportunity to take care of myself before the dog needs to get walked. Pooping usually takes precedence over toothbrushing. So I usually end up going out with a mask on and morning breath. God help me.
I put a mask on today and went into a store and my breathe smelled like Chinese poop breathe.
Bacteria, yes.
Not viruses.
Heard an ad on the radio today selling 3 layered cloth masks. They said that the masks ‘help block particles and bacteria from passing through’.
No mention of viruses. Why? Because you can’t lie in advertising.
Have you ever bought a water filter for backpacking. They have types that filter out bacteria and they types that filter out bacteria and viruses. The ones that filter viruses are on a whole nother level.
Masks don’t work for viruses, period. Not even n95 masks.
There is not one single RCT that says cloth or n95 masks prevent the spread of viruses. Not one.
Actually that isn’t the point but you keep believing what you want to believe.
Volcom is now selling masks
I went on their site last night to look at trunks and was like woa, this is weird
I went on their site last night to look at trunks and was like woa, this is weird
