Comments by "Z P" (@zachman5150) on "DW News"
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@mrsmackenzie7850 Actually there is a lot or peer-reviewed medical studies re: the efficacy of masks at preventing the transmission of viruses... and they seem to conclude that they DO NOT.
Here you are-- Education, Fun & for FREE: Feel free to make your argument with the Medical Specialists who've been listed below.
Masks have been proven to be ineffective at preventing the transmission of viruses-- evidenced by the numbers peer-reviewed medical studies, but there are also studies showing negative affects of wearing masks, such as causing Bacterial Pneumonia.
An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wuhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu while wearing an N-95 mask.
"More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012).
As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed.
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
Baccam et al. (2006), Lowen et al. (2007), Zwart et al. (2009), Shaman et al. (2010), Viboud (2010), Yelzi and Otter (2011), bin-Reza et al. (2012) "The use of masks and respirators to prevent transmission of influenza: a systematic review of the science evidence", Influenza, and Other Respiratory Viruses 6(4), 257-267. There were 17 eligible studies. (...) None of the studies established a conclusive relationship between mask / respirator use and protection against influenza infection." Brooke et al. (2013), Clinical Infectious Diseases, Volume 65, Issue 11, 1 December 2017, Pages 1934-1942, 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. doing:10.1001/jama.2019. 11645, Paules and Subbaro (2017), Offeddu, V. et al. (2017)"Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers 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, 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
I hope that clears it up for you.There's a lot of disinformation out there, causing people to panic and there's no need for panic, so
B R E A T H E
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@Beth Jannet If you're not sick, that's entirely IRRELEVANT. ;)
If you are, well... Here... Learn something useful:
"More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012).
As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed.
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wuhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu while wearing an N-95 mask.
Baccam et al. (2006), Lowen et al. (2007), Zwart et al. (2009), Shaman et al. (2010), Viboud (2010), Yelzi and Otter (2011), bin-Reza et al. (2012) "The use of masks and respirators to prevent transmission of influenza: a systematic review of the science evidence", Influenza, and Other Respiratory Viruses 6(4), 257-267. There were 17 eligible studies. (...) None of the studies established a conclusive relationship between mask / respirator use and protection against influenza infection." Brooke et al. (2013), Clinical Infectious Diseases, Volume 65, Issue 11, 1 December 2017, Pages 1934-1942, 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. doing:10.1001/jama.2019. 11645, Paules and Subbaro (2017), Offeddu, V. et al. (2017)"Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers 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, 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
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An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wyhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu wile wearing an N-95 mask.
"More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012).
As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed.
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
Thoughts?
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@williamchamberlain2263 I am not aware of such a study, but this seems to cover the relevant bits:
""More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012)."
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
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@yaynovelty2110 An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wuhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu while wearing an N-95 mask.
"More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012).
As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed.
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
Baccam et al. (2006), Lowen et al. (2007), Zwart et al. (2009), Shaman et al. (2010), Viboud (2010), Yelzi and Otter (2011), bin-Reza et al. (2012) "The use of masks and respirators to prevent transmission of influenza: a systematic review of the science evidence", Influenza, and Other Respiratory Viruses 6(4), 257-267. There were 17 eligible studies. (...) None of the studies established a conclusive relationship between mask / respirator use and protection against influenza infection." Brooke et al. (2013), Clinical Infectious Diseases, Volume 65, Issue 11, 1 December 2017, Pages 1934-1942, 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. doing:10.1001/jama.2019. 11645, Paules and Subbaro (2017), Offeddu, V. et al. (2017)"Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers 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, 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
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@keithmaxine534 An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wuhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu while wearing an N-95 mask.
"More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012).
As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed.
All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application.
Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
Baccam et al. (2006), Lowen et al. (2007), Zwart et al. (2009), Shaman et al. (2010), Viboud (2010), Yelzi and Otter (2011), bin-Reza et al. (2012) "The use of masks and respirators to prevent transmission of influenza: a systematic review of the science evidence", Influenza, and Other Respiratory Viruses 6(4), 257-267. There were 17 eligible studies. (...) None of the studies established a conclusive relationship between mask / respirator use and protection against influenza infection." Brooke et al. (2013), Clinical Infectious Diseases, Volume 65, Issue 11, 1 December 2017, Pages 1934-1942, 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. doing:10.1001/jama.2019. 11645, Paules and Subbaro (2017), Offeddu, V. et al. (2017)"Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers 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, 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
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