DCHAS-L Discussion List Archive
From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Clear masks for teaching?
Date: Wed, 5 Aug 2020 02:29:27 +0000
Reply-To: Monona Rossol <actsnyc**At_Symbol_Here**cs.com>
Message-ID: 1619163607.78956.1596594567573**At_Symbol_Here**mail.yahoo.com
In-Reply-To
I just downloaded Lednicky, et all on aerosols in hospital air. Oy. here's the link and the conclusion
medRxiv preprint doi: https://doi.org/10.1101/2020.08.03.20167395
conclusion
"Our findings reveal that viable SARS-CoV-2 can be present in aerosols generated by a COVID-19 patient in a hospital room in the absence of an aerosol-generating procedure, and can thus serve as a source for transmission of the virus in this setting. Moreover, the public health implications are broad, especially as current best practices for limiting the spread of COVID-19 center on social distancing, wearing of face-coverings while in proximity to others and hand-washing. For aerosol-based transmission, measures such as physical distancing by 6 feet would not be helpful in an indoor setting, provide a false-sense of security and lead to exposures and outbreaks. With the current surges of cases, to help stem the COVID-19 pandemic, clear guidance on control measures against SARS-CoV-2 aerosols are needed, as recently voiced by other scientists."
Monona
-----Original Message-----
From: Nicole Grasso <nicole.willard**At_Symbol_Here**GMAIL.COM>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Tue, Aug 4, 2020 8:54 pm
Subject: Re: [DCHAS-L] Clear masks for teaching?
Hi Tammy,
As these are meant as a substitute for cloth face covers (and not PPE) we tried these for a hearing-impared team lead:
but they eventually formed a vacuum and sucked into the wearer's face.
We then tried these:
The team loved them. I'm not sure if they are disinfecting them or disposing. If you are interested, I can follow up with the team.
Regards,
Nicole
I would be most skeptical of #3, despite the claim of "FDA approval". It looks like it has almost NO filtering material at all.
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Tammy M. Lutz-Rechtin
Sent: Tuesday, August 4, 2020 5:11 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Clear masks for teaching?
What does everyone think about the use clear window masks for teaching? We want to be safe and increase effective communication.
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