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Jose-Luis Jimenez
jljcolorado
1/ Using CO2 indoors to monitor infection risk - Very good idea- Limitation: one limit (e.g. 800 ppm) does not work for all situations.- Preprint from: @ZheP_AtmChem & I: https://www.medrxiv.org/content/10.1101/2020.09.09.20191676v1-
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1/ Localized extraction of aerosols in dentistryThis is the solution that makes the most sense by far to me, combined w/ ventilation and portable HEPA air cleaners. This type of
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1/ Aerosols, droplets, & “flexible droplets”Trying to clarify key aspects. Details complex, give bottom lines 1st:Bottom line 1: If fall within 1-2 m of the person (WHO or CDC droplets),
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1/ On the need for a **true multidisciplinary approach** to aerosol & droplet transmission (aka “the Godzilla thread”) 2/ This thread is offered constructively to point out a problem &
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1/ On the need for RCTs for all evidence before it is believable at all.Prominent ppl from the health side say this often, e.g.:https://twitter.com/eliowa/status/1292331203983552512https://twitter.com/samhorwich/status/1292332130698014721Wi
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1/ Recommend getting an affordable CO2 meter (see post #2) & do this experiment (here: supermarket), post results. 1000ppm a bit high, but can get much much higher (and thus
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1/ Air cleaners: the good, the dubious, and the uglyWith pandemic & major contribution of aerosol spread, many ppl wanting “air cleaning devices” to reduce / remove virus. Unfortunately many
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1/ My current estimates on modes of transmission & mitigation measuresFrom work on this & talking to a lot of scientists, my thinking is evolving. I thought it'd be useful
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5/ c) Aerosols: don’t fall to ground quickly unlike drops, stay in the air tens of sec to hrs (depend on size). Infect by inhalation (or deposition onto eyes). Substantial
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1/ Why the arguments against aerosol transmission (AT) of SARS-CoV-2 don't hold water. See my Perspective in MedScape at:https://www.medscape.com/viewarticle/934837?src=uc_mscpedt&faf=1#vp_1I have been trying to understand for month
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1/ This article (https://jamanetwork.com/journals/jama/fullarticle/2768396) was recently published in JAMA, and argues against aerosols being an important transmission pathway for COVID-19. Although better than other similar articles, the a
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1/ Thread on the relative importance of transmission modesA very difficult question, everyone reluctant to guess. As evidence accumulates, I decided to venture a guess, hoping to start some discussion.
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