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Thread: 45+ Mask Studies
The medical literature for the past forty-five years has been consistent: masks are useless in preventing the spread of disease and, if anything, are unsanitary objects that themselves spread bacteria and viruses.
The medical literature for the past forty-five years has been consistent: masks are useless in preventing the spread of disease and, if anything, are unsanitary objects that themselves spread bacteria and viruses.
1. Peer reviewed study showing masks injure every bodily organ that research team studied:
https://pdmj.org/papers/masks_false_safety_and_real_dangers_part3/
https://pdmj.org/papers/masks_false_safety_and_real_dangers_part3/
2. Director of Infection Control at Kingston Health Sciences Centre - Ontario, Canada https://www.thewhig.com/news/local-news/new-evidence-most-common-place-to-contract-covid-19-is-at-home
3. Danish Study on Mask Wearing
https://www.acpjournals.org/doi/10.7326/M20-6817
https://www.acpjournals.org/doi/10.7326/M20-6817
4. Cloth masks fail to prevent spread of COVID-19 https://www.cebm.net/covid-19/masking-lack-of-evidence-with-politics/
5. Cloth masks increase likelihood of infection https://bmjopen.bmj.com/content/5/4/e006577
6. Ritter et al., in 1975, found that âthe wearing of a surgical face mask had no effect upon the overall operating room environmental contamination. https://pubmed.ncbi.nlm.nih.gov/1157412/
7. Application of human albumin microspheres to the interior of surgical masks in 20 operations. At the end of each operation, wound washings were examined under the microscope. âParticle contamination of the wound was demonstrated in all experiments.â https://europepmc.org/article/med/7379387
8. Laslett &Sabin, in 1989, found that caps & masks were not necessary during cardiac catheterization. âNo infections were found in any patient, regardless of whether a cap or mask was used,â they wrote. https://onlinelibrary.wiley.com/doi/abs/10.1002/ccd.1810170306
9. 1991 study, a gen surgery team wore 0 masks in half of their surgeries for 2 years. After 1,537 operations performed with masks, the wound infection rate was 4.7%, after 1,551 operations performed with 0 masks, the wound infection rate was only 3.5%. https://link.springer.com/article/10.1007/BF01658736
10. A review by Skinner and Sutton in 2001 concluded that âThe evidence for discontinuing the use of surgical face masks would appear to be stronger than the evidence available to support their continued use.â https://journals.sagepub.com/doi/pdf/10.1177/0310057X0102900402
11. Lahme et al., in 2001, wrote that âsurgical face masks worn by patients during regional anaesthesia, did not reduce the concentration of airborne bacteria over the operation field in our study. Thus they are dispensable.â https://europepmc.org/article/med/11760479
12a. Webster et al., in 2010, reported on obstetric, gynecological, general, orthopaedic, breast and urological surgeries performed on 827 patients. All non-scrubbed staff wore masks in half the surgeries, and none of the non-scrubbed staff wore masks in half the surgeries. ...
12b. ... Surgical site infections occurred in 11.5% of the Mask group, and in only 9.0% of the No Mask group. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1445-2197.2009.05200.x
13a. Surgeons at the Karolinska Institute in Sweden, recognizing the lack of evidence supporting the use of masks, ceased requiring them in 2010 for anesthesiologists and other non-scrubbed personnel in the operating room. âOur decision to no longer require routine surgical ...
13b. .... masks for personnel not scrubbed for surgery is a departure from common practice. But the evidence to support this practice does not exist,â wrote Dr. Eva Sellden. https://pubs.asahq.org/anesthesiology/article/113/6/1447/9572/Is-Routine-Use-of-a-Face-Mask-Necessary-in-the
14. Bahli did a systematic literature review in 2009 and found that âno significant difference in the incidence of postoperative wound infection was observed between masks groups and groups operated with no masks.â https://www.semanticscholar.org/paper/Does-evidence-based-medicine-support-the-of-in-in-Bahli/751acd427c20c8dc7d1fbc1b45eead104286f481?p2df
15. Figueiredo et al., in 2001, reported that in five years of doing peritoneal dialysis without masks, rates of peritonitis in their unit were no different than rates in hospitals where masks were worn. http://www.advancesinpd.com/adv01/21Figueiredo.htm
16. Facemasks and similar barriers to prevent respiratory illness such as COVID-19 https://www.medrxiv.org/content/10.1101/2020.04.01.20049528v1
17. Physical interventions to interrupt or reduce the spread of respiratory viruses. Part 1 - Face masks, eye protection and person distancing: systematic review and meta-analysis https://www.medrxiv.org/content/10.1101/2020.03.30.20047217v2
18. Universal Masking in Hospitals in the Covid-19 Era https://www.nejm.org/doi/full/10.1056/NEJMp2006372
19. Effectiveness of N95 respirators versus surgical masks in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis https://www.cmaj.ca/content/188/8/567
20. The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779801/
21. Comparison of Filtration Efficiency and Pressure Drop in Anti-Yellow Sand
Masks, Quarantine Masks, Medical Masks, General Masks, and Handkerchiefs https://aaqr.org/articles/aaqr-13-06-oa-0201.pdf
Masks, Quarantine Masks, Medical Masks, General Masks, and Handkerchiefs https://aaqr.org/articles/aaqr-13-06-oa-0201.pdf
22. Use of surgical face masks to reduce the incidence of the common cold among health care workers in Japan: a randomized controlled trial https://pubmed.ncbi.nlm.nih.gov/19216002/
23. Comparison of Filtration Efficiency and Pressure Drop in Anti-Yellow Sand
Masks, Quarantine Masks, Medical Masks, General Masks, and Handkerchiefs https://aaqr.org/articles/aaqr-13-06-oa-0201.pdf
Masks, Quarantine Masks, Medical Masks, General Masks, and Handkerchiefs https://aaqr.org/articles/aaqr-13-06-oa-0201.pdf
24. A cluster randomised trial of cloth masks compared with medical masks in healthcare workers https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
25. Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers: A Systematic Review and Meta-Analysis https://academic.oup.com/cid/article/65/11/1934/4068747
26. Comparison of filter efficacy of Medical Non-Woven Fabrics against Three Different Microbe Aerosols https://www.jstage.jst.go.jp/article/bio/23/2/23_61/_pdf/-char/en
27. Postoperative wound infections and surgical face masks: A controlled study https://link.springer.com/article/10.1007/BF01658736
28. Is a mask necessary in the operating theatre? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2493952/pdf/annrcse01509-0009.pdf
29. COMMENTARY: Masks-for-all for COVID-19 not based on sound data https://www.cidrap.umn.edu/news-perspective/2020/04/commentary-masks-all-covid-19-not-based-sound-data
30. Rapid Expert Consultation on the Effectiveness of Fabric Masks for the COVID-19 Pandemic (April 8, 2020) https://www.nap.edu/catalog/25776/rapid-expert-consultation-on-the-effectiveness-of-fabric-masks-for-the-covid-19-pandemic-april-8-2020
31a. 3 of 5 NIH studies from 2004-2020 all finding verifiable health effects from wearing a face mask, including
scientifically verified reduction is blood oxygen level:
https://pubmed.ncbi.nlm.nih.gov/29395560/
https://pubmed.ncbi.nlm.nih.gov/32590322/ https://pubmed.ncbi.nlm.nih.gov/15340662/
scientifically verified reduction is blood oxygen level:
https://pubmed.ncbi.nlm.nih.gov/29395560/
https://pubmed.ncbi.nlm.nih.gov/32590322/ https://pubmed.ncbi.nlm.nih.gov/15340662/
32a. 2 of 5 NIH studies from 2004-2020 all finding verifiable health effects from wearing a face mask, including
scientifically verified reduction is blood oxygen level:
https://pubmed.ncbi.nlm.nih.gov/26579222/ https://pubmed.ncbi.nlm.nih.gov/31159777/
scientifically verified reduction is blood oxygen level:
https://pubmed.ncbi.nlm.nih.gov/26579222/ https://pubmed.ncbi.nlm.nih.gov/31159777/
33a. Lipp and Edwards reviewed the surgical literature in 2014 and found âno statistically significant
difference in infection rates between the masked and unmasked group in any of the trials.â .....
difference in infection rates between the masked and unmasked group in any of the trials.â .....
33b. Vincent and Edwards updated this review in 2016 and the conclusion was the same.
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD002929.pub2/full
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD002929.pub2/full
34. Carøe, in a 2014 review based on four studies and 6,006 patients, wrote that ânone of the four studies
found a difference in the number of post-operative infections whether you used a surgical mask
or not.â https://europepmc.org/article/med/25294675
found a difference in the number of post-operative infections whether you used a surgical mask
or not.â https://europepmc.org/article/med/25294675
35. Salassa and Swiontkowski, in 2014, investigated the necessity of scrubs, masks and head coverings in
the operating room and concluded that âthere is no evidence that these measures reduce the
prevalence of surgical site infection.â
https://journals.lww.com/jbjsjournal/Abstract/2014/09030/Surgical_Attire_and_the_Operating_Room_
_Role_in.11.aspx
the operating room and concluded that âthere is no evidence that these measures reduce the
prevalence of surgical site infection.â
https://journals.lww.com/jbjsjournal/Abstract/2014/09030/Surgical_Attire_and_the_Operating_Room_
_Role_in.11.aspx
36. Da Zhou et al., reviewing the literature in 2015, concluded that âthere is a lack of substantial
evidence to support claims that facemasks protect either patient or surgeon from infectious
contamination.â https://journals.sagepub.com/doi/pdf/10.1177/0141076815583167
evidence to support claims that facemasks protect either patient or surgeon from infectious
contamination.â https://journals.sagepub.com/doi/pdf/10.1177/0141076815583167
