On Apr 4, 2020, at 10:16 AM, Alan Hall <oldeddoc**At_Symbol_Here**GMAIL.COM> wrote:

Neal et al,

If you get a placebo effect, then you get it.

An old Professor from my Medical School noted that if you get a good result, don't argue without, no matter how it came about.

Once very long ago we had Obecalp #1-8 to prescribe for people who were upset but not really ill.  Read it backwards.  Chalk in different colors of food coloring, but sometimes it worked quite well.

Be safe, all.  And if I had one and it was me, I'd wear a PAPR with a HEPA filter, properly fit tested.  Best to save such PPE for those on the frontlines in clinics, hospitals, emergency responders, etc.  Not for aging semi-retired physicians who work from home.

Alan

Alan H. Hall, M.D.

Medical Toxicologist

On Fri, Apr 3, 2020 at 3:55 AM Jack Reidy <jreidy2**At_Symbol_Here**stanford.edu> wrote:

All,

 

A coworker of mine sent me a review from University of Minnesota on the topic. I haven't had time to dig into it in detail, but my speed-read says that they have the same concerns as Neal regarding the unfounded sense of protection. http://www.cidrap.umn.edu/news-perspective/2020/04/commentary-masks-all-covid-19-not-based-sound-data

 

Sincerely,

 

Jack Reidy (he/him)

Research Safety Specialist

Environmental Health & Safety

Stanford University

484 Oak Road, Stanford, CA, 94305

Tel: (650) 497-7614

 

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of NEAL LANGERMAN
Sent: Thursday, April 2, 2020 8:55 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Facial barrier use

 

More jurisdictions are urging their citizens to use cloth facial barrier devices, such as scarfs, bandanas, etc whenever outside. I have changed my opinion of such non-standard facial protection.  Based on published analysis of cases comparing facial protection use and not, those countries where it is either mandatory or socially driven seem to have better outcomes (yes, it is a multi-factorial problem and this is but one factor).  My concern with the user having an unfounded sense of protection seems to be too conservative.  The risk:benefit ratio appears to favor the benefit. One additional benefit I had not previously considered is that the use of a facial barrier protection serves as both a reminder and a barrier to reduce touching one's face.

 

I have not yet decided if I personally will use a cloth facial barrier in lieu of the full face HEPA respirator I currently wear when I must leave my home.

 

Please note - I am not talking about employees in a critical sector facility.  I am only speaking to people who must go food shopping, etc.

 

Stay healthy and stay safe.

 

Neal

 

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