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Previous by Date: Subject: [DCHAS-L] Foundation for OccupationalHealth & Safety (FOHS) Date: Thursday, September 9, 2021 at 11:31:07 AM Author: CHAS membership <membership**At_Symbol_Here**DCHAS.ORG>

Next by Date: Subject: Re: [DCHAS-L] Temperature screening question Date: Thu, 9 Sep 2021 08:50:14 -0700 Author: Mark Pichaj

Thanks Rob, these are very helpful.  Am still curious how so very few "workplace transmitted covid infections" are reported by companies using company contact tracing methods.  

Some random quick refs:

Body temperature screening to identify SARS-CoV-2 infected young adult travellers is ineffective

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403846/ 

The Environment Has Effects on Infrared Temperature Screening for COVID-19 Infection

https://www.sciencedirect.com/science/article/pii/S0196655321005186

..."Non-contact infrared thermometers may not screen appropriately for fever."

Estimating the efficacy of symptom-based screening for COVID-19

https://www.nature.com/articles/s41746-020-0300-0

"Based on these results, symptom-based screening may not be an effective strategy to identify individuals who should be tested for SARS-CoV-2 infection or to obtain a leading indicator of new COVID-19 cases."

Review of the efficacy of infrared thermography for screening infectious diseases with applications to COVID-19

https://www.spiedigitallibrary.org/journals/journal-of-medical-imaging/volume-8/issue-S1/010901/Review-of-the-efficacy-of-infrared-thermography-for-screening-infectious/10.1117/1.JMI.8.S1.010901.full?SSO=1 

"Studies have reported on the unreliability of IRT due to poor sensitivity and specificity in detecting true core body temperature and its inability to identify asymptomatic carriers. Airport mass screening using IRT was conducted during occurrences of SARS, Dengue, Swine Flu, and Ebola with reported sensitivities as low as zero. Other studies reported that screening other vital signs such as heart and respiratory rates can lead to more robust methods for early infection detection."

Rob Toreki

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On Sep 9, 2021, at 11:04 AM, Mike Cooper <mcooper**At_Symbol_Here**INDUSTRIALHYGIENERESOURCES.COM> wrote:

A recent industry group discussion noted that entrance temperature screening (for covid ) was being discontinued by several companies because: (i) they had not rejected entrance anyone due to high temperatures (ii) some positive non-symptomatic people have passed the temperature screen, and (iii) there is literature which questions its effectiveness.  Wondering if anyone on the listserv has any data or literature regarding the efficacy and pros and cons of temperature screening for companies or academic institutions? 

 

V/r, 

Mike

 

Michael N. Cooper MS, MPH, NRRPT, CIH

Industrial Hygiene Resources Ltd.

mcooper**At_Symbol_Here**industrialhygieneresources.com

 (408) 313-2127

 

Adjunct Faculty 

Department of Community and Environmental Health

School of Allied Health Sciences,

College of Health Sciences 

Boise State University 

 

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