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"We identified 10 RCTs that reported estimates of the effectiveness of face masks in reducing lab-confirmed influenza virus infections 1946–2018. In pooled analysis, we found no significant reduction in influenza transmission with the use of face masks"
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article#tnF2
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article#tnF2
"Disposable medical masks (also known as surgical masks) are loose-fitting devices that were designed to be worn by medical personnel to protect accidental contamination of patient wounds, and to protect the wearer against splashes or sprays of bodily fluids"
"There is limited evidence for their effectiveness in preventing influenza virus transmission either when worn by the infected person for source control or when worn by uninfected persons to reduce exposure. Our systematic review found no significant effect of face masks"
"This study was conducted in preparation for the development of guidelines by the World Health Organization on the use of nonpharmaceutical interventions for pandemic influenza in nonmedical settings."
"This study was supported by the World Health Organization. J.X. and M.W.F. were supported by the Collaborative Research Fund from the University Grants Committee of Hong Kong"
Influenza like illness rates 3 times higher with cloth masks when compared to control group:
https://bmjopen.bmj.com/content/5/4/e006577
Prof. Carl Heneghan, Oxford University: "The high quality trial evidence for cloth masks suggest they increase your rate of reinfection."
https://bmjopen.bmj.com/content/5/4/e006577
Prof. Carl Heneghan, Oxford University: "The high quality trial evidence for cloth masks suggest they increase your rate of reinfection."
FACE MASKS, including MEDICAL MASKS: "Evidence from 14 randomized controlled trials of these measures did not support a substantial effect on transmission of laboratory-confirmed influenza."
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article#tnF2
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article#tnF2
Scientific director of the Nanodiagnostics research laboratory in Italy Stefano Montanari states: "Those who wear face masks do not know that they are doing so much harm to their health". https://www.radioradio.it/2020/11/stefano-montanari-danni-mascherine-ricerca-scientifica/?cn-reloaded=1
Masks vs N95/P2 Respirators: "None of the studies established a conclusive relationship between mask/respirator use and protection against influenza infection." https://pubmed.ncbi.nlm.nih.gov/22188875/
"Masks, false safety
and real dangers
Part 1:
Friable mask particulate
and lung vulnerability
Part 2:
Microbial challenges
from masks
Part 3:
Hypoxia, hypercapnia
and physiological effects"
https://pdmj.org
and real dangers
Part 1:
Friable mask particulate
and lung vulnerability
Part 2:
Microbial challenges
from masks
Part 3:
Hypoxia, hypercapnia
and physiological effects"
https://pdmj.org
How some masks INCREASE transmission:
"Speaking through some masks dispersed largest droplets into a multitude of smaller droplets..smaller particles are airborne longer than large droplets (larger droplets sink faster), a mask might be counterproductive."
https://advances.sciencemag.org/content/6/36/eabd3083/tab-figures-data?s=09
"Speaking through some masks dispersed largest droplets into a multitude of smaller droplets..smaller particles are airborne longer than large droplets (larger droplets sink faster), a mask might be counterproductive."
https://advances.sciencemag.org/content/6/36/eabd3083/tab-figures-data?s=09
