[MCOH-EH] Question re: Mask studies

[Swift, Melanie D., M.D., M.P.H.]

Hi Wendy, not sure on the last question, but in the metanalysis they did a regression so whether the subjects were masked or not was taken into account and the physical distancing was found independently associated with reduced transmission risk.

And, I agree with the physical distancing terminology! Social distancing sounds so sad.

Melanie

Melanie Swift, MD, MPH
Medical Director, Mayo Clinic Physician Health Center<https://www.mayoclinic.org/departments-centers/preventive-occupational-aerospace-medicine/physician-health-center/referrals>
Associate Medical Director, Occupational Health Service
Senior Associate Consultant
Assistant Professor of Medicine
Division of Preventive, Occupational, and Aerospace Medicine
Phone 507.284.2560
_______________________________
Mayo Clinic
200 First Street SW
Rochester, MN 55905
www.mayoclinic.org<http://www.mayoclinic.org/>

From: MCOH-EH [mailto:mcoh-eh-bounces+swift.melanie=mayo.edu at mylist.net] On Behalf Of Thanassi, Wendy via MCOH-EH
Sent: Friday, July 10, 2020 12:22 PM
To: deecre1 at cox.net; MCOH-EH; Dr.Runde
Cc: Thanassi, Wendy
Subject: [EXTERNAL] [MCOH-EH] Question re: Mask studies

I hope this question isn’t foolish: I am advising local schools and want to make sure I have this right.

I have reviewed the Lancet article, good but limited as all meta-analyses are by the variety of studies and quality of those reports.

Would someone clarify the physical distancing (we should advocate for that language rather than social distancing, whatever that is) benefits at 1m vs. 2m vs. more… are those analyzed when both parties are wearing masks? Or are they without masks? I assume the latter but am not sure.

Are there any studies you’re aware of regarding physical distance efficacy with dual mask use?

Thanks,
Wendy

Wendy Thanassi MA, MD, MRO
Chief, Occupational Health Service
Palo Alto VA HCS
650-714-6151

Associate Clinical Professor
Emergency Medicine and Population Health
Stanford Medical Center and Hospitals

From: MCOH-EH <mcoh-eh-bounces+wendy.thanassi=va.gov at mylist.net> On Behalf Of deecre1 at cox.net
Sent: Wednesday, July 8, 2020 3:01 PM
To: MCOH-EH <mcoh-eh at mylist.net>; Dr.Runde <Dr.Runde at Roep.org>
Subject: [EXTERNAL] Re: [MCOH-EH] Mask studies

Thank you for posting this article! It will help explain the benefit of using masks! Diane Doyker

On July 8, 2020 at 4:32 PM "Swift, Melanie D., M.D., M.P.H. via MCOH-EH" <mcoh-eh at mylist.net<mailto:mcoh-eh at mylist.net>> wrote:
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31142-9/fulltext


Melanie

Melanie Swift, MD, MPH
Medical Director, Mayo Clinic Physician Health Center<https://www.mayoclinic.org/departments-centers/preventive-occupational-aerospace-medicine/physician-health-center/referrals>
Associate Medical Director, Occupational Health Service
Senior Associate Consultant
Assistant Professor of Medicine
Division of Preventive, Occupational, and Aerospace Medicine
Phone 507.284.2560
_______________________________
Mayo Clinic
200 First Street SW
Rochester, MN 55905
www.mayoclinic.org<http://www.mayoclinic.org/>

From: bounce-41917527-96363825 at listserv.unc.edu<mailto:bounce-41917527-96363825 at listserv.unc.edu> [mailto:bounce-41917527-96363825 at listserv.unc.edu] On Behalf Of Dr.Runde
Sent: Wednesday, July 8, 2020 3:28 PM
To: Swift, Melanie D., M.D., M.P.H.
Subject: [EXTERNAL] [occ-env-med-l] Mask studies

I have had people asking me about good, solid, scientific studies on either side of the question whether to wear a mask or not.  Does anybody have good quality studies they could recommend?
Thanks,

Eddie W. Runde, MD, MPH, FACOEM
Board-certified in Occupational Medicine
ROEP, PC
Columbia, MO

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