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Prof. Jose-Luis Jimenez Profile picture
@jljcolorado
Jan 11, 2022 • 8 tweets • 7 min read • Read on X
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1H/ The new #COVIDHallofHumor

As many of your know we have started 2 ongoing threads of good and bad practices worldwide against COVID transmission

- #COVIDHallofShame:

- #COVIDBestPractices:
2H/ The good examples are much more fun to compile, but unfortunately there seem to be many more bad examples everywhere.

So inspired by tweet by @microlabdoc, I thought it may be good (at least for our mental health) to start a #COVIDHallofHumor

Pls submit by adding that tag
3H/ UK 🇬🇧: Here we see @microlabdoc demonstrating a new method to clean the air of viruses

Cheap and easy. Only need pins, a scarf, disinfectant wipes, and work that you really want to avoid for the next 30 min!



#COVIDHallofHumor
4H/ CANADA🇨🇦: in response to the news on the image below from TODAY about more investment in disinfection for COVID-19 (news.ontario.ca/en/release/100…), @DadEducator had a great response:



#COVIDHallofHumor
5H/ SPAIN🇪🇸: upon news about useless transparent fishnet masks (pic on the left), @eljoserc quipped that those are just as good as needlepoint preservatives, provided they have an official certificate (as the masks do have, somehow!!)



#COVIDHallofHumor
6H/ MEXICO🇲🇽: difficult as it may be to believe, this is a real video published by Mexican Gov. @GobiernoMX a few days ago about COVID-19 prevention

So bad it is humorous

- Virus infects outdoors
- COVID Prevention is to eat healthy foods and avoid junk food

#COVIDHallofHumor
7H/ PHILIPPINES🇵🇭: A prominent lawyer taping the mask to the inside of his face shield



#COVIDHallofHumor
8H/ USA🇺🇸(San Francisco): great Halloween decoration for a house

[though now the house needs to upgrade from surgical to N95😉]

hoodline.com/2020/10/this-w…

#COVIDHallofHumor

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More from @jljcolorado

Prof. Jose-Luis Jimenez Profile picture
May 26
1/ Survey of CO2 indoors during trip

CO2 (above ~400 ppm outdoors) indicates the amount of exhaled air (& virus) trapped in a space

Also per recent scientific results by @ukhadds, CO2 helps SARS-CoV stay infectious in air much longer

@united flight boarding, pretty terrible! Image
2/ This is the trip so far:

-Low outdoors
-Pretty high ~2000 in @RideRTD bus to airport
- ok ~800 at @DENAirport, except restroom ~1500. Not sure why restrooms at this airport are so often poorly ventilated
- Then boarding on @united, ventilation OFF, so huge increase till ON Image
3/ For details of the recent results on how and why CO2 makes SARS-CoV-2 stay infectious much longer in the air, see this recent thread by @ukhadds

Read 9 tweets
Prof. Jose-Luis Jimenez Profile picture
May 8
1/ "After four years of fighting about it, @WHO has finally proclaimed that viruses, including the SARS-CoV-2 virus that causes COVID, can be spread through the air"



By @maggiemfoxscientificamerican.com/article/a-figh…
2/ "It took four years to get here because some leaders in public health, medicine and science clung too tightly to precision and semantics"

"One particular moment of shame came on March 28, 2020, when WHO tweeted: “FACT: #COVID19 is NOT airborne.”

3/ "Words matter. When people heard that COVID might spread on surfaces, they wasted time wiping down groceries. People who misunderstood airborne spread needlessly wore masks on outdoor walks and veered off sidewalks to avoid their neighbors."
Read 7 tweets
Prof. Jose-Luis Jimenez Profile picture
Apr 18
1/ @WHO has published a report on updated terminology for disease transmission

I've seen some debate about it. My take:

- Terminology itself is ok. Big progress
- But no recommendations of how to protect!

Report:

Press release: who.int/publications/m…
who.int/news/item/18-0…
2/ The report was likely the result of intense pressure on @WHO during the pandemic:

- They denied that #COVIDIsAirborne on March 2020
- They finally accepted it 2 years later

nature.com/articles/d4158…
@WHO 3/ To their credit, @WHO did invite some of their critics to be part of the committee.

What was the terminology before. In medical circles:

- droplet transmission: if it happened in close proximity, or if particles were > 5 microns

- airborne transmission: if it happened far
Read 34 tweets
Prof. Jose-Luis Jimenez Profile picture
Mar 28
1/ New paper in @ScienceMagazine: "Mandating Indoor Air Quality for Public Buildings"

Explaining current status of indoor air quality standards (in short: bad or non-existent), the huge health benefits that would arise from them & proposing a path forward
science.org/doi/10.1126/sc…
Image
2/ "People living in urban & industrialized societies, which are expanding globally, spend more than 90% of time indoors, breathing indoor air (IA)."

"Most countries do NOT have legislated indoor air quality (IAQ) performance standards for public spaces"

science.org/doi/10.1126/sc…
3/ "Few building codes address operation, maintenance, and retrofitting, and most do NOT focus on airborne disease transmission."

"We propose that Indoor Air Quality (IAQ) standards be mandatory for public spaces"

science.org/doi/10.1126/sc…
Read 14 tweets
Prof. Jose-Luis Jimenez Profile picture
Oct 4, 2023
1/ Checking the ventilation by measuring CO2 as I travel to the #AAAR2023 conference

@RideRTD bus to Denver airport. Bus route had started 3 min before I got in, already 1500 ppm

Typical of these @RideRTD buses, poor ventilation Image
2/ Not getting any better as time passes in the @rideRTD bus to the airport...

7% of the air is being re-breathed, it has already been in someone else lungs when each of us breathe it. Image
@RideRTD 3/ Given the often poor-to-mediocre ventilation in US transportation systems, I wear N95 masks (not KN95, less good)

In this case @3M VFlex, which I tested at 99.99% filtration for myself

It also stays sealed when I talk, doesn't distort my speech (& add to my Spanish accent) Image
Read 14 tweets
Prof. Jose-Luis Jimenez Profile picture
Oct 2, 2023
1/ Video de mi presentación sobre "Transmisión de enfermedades por el aire: cómo funciona, por qué se malentendió, y cómo reducirla"

como parte de la presentación del libro de ventilación de @aireamos

2/ Las diapositivas se pueden bajar de este enlace.

(Son de una charla más larga así que tienen más detalles, pero están todas las de la presentación de @Aireamos)

drive.google.com/file/d/1Bs0RRG…
@aireamos 3/ Miguel Ángel Campano @MA_Campano y @Aireamos han sido los motores del libro de ventilación:

Read 4 tweets

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