Prof. Jose-Luis Jimenez Profile picture
Jan 17, 2022 11 tweets 5 min read Read on X
1/ El exasesor de Obama predice qué pasará en España en primavera

"Rafael Bengoa, experto en gestión sanitaria y exconsejero de Sanidad del País Vasco, aconseja reforzar el sistema de salud de España: “Su situación es la peor de su historia”"

as.com/diarioas/2022/…
2/ Entrevista interesante

"Ómicron no es el fin, COVID-19 vino para quedarse y lo más sensato es aumentar la capacidad del sistema de salud y crear condiciones favorables en las aulas para evitar contagios entre niños. “La atención primaria es nuestro banquillo. Hay q fichar”"
3/ "La situación va a ser de agobio total en enero y principios de febrero por el decalaje. Esto ha creado una demanda sobre el sistema de salud, probablemente la peor de su historia durante este mes. Con menos mortalidad, pero con una demanda absolutamente brutal."
4/ "Hay mucha gente que piensa que de repente, pasado un día concreto, estamos en fase endémica. Los virus no hacen eso. Todavía estamos en pandemia. Los virus no se detienen con un bombardeo, se detienen despacio, con brotes que tendremos que seguir controlando."
5/ "Hay que decir q no siempre un virus más transmisible es menos virulento. En este caso hemos tenido suerte porque al virus le ha interesado más la faceta de transmisión, pero eso no es automático. Hay que esperar que el virus siga intentando evolucionar para ser + infeccioso"
6/ "Es impredecible, ni el propio virus sabe si va a lograr otra variante más exitosa. Lo que tenemos que hacer es crear capacidad para manejar lo inesperado. Si hago el símil con el fútbol, los entrenadores tienen en el banquillo capacidad para lo inesperado."
7/ "Con los colegios vemos un ejemplo de cierta improvisación. Lo lógico es crear la infraestructura que te hace falta, como ventiladores, controladores de CO2, ayudar a disponer de mascarillas y disponer de muchos test."
8/ "Mascarillas en exteriores no era la primera medida q habría que tomar. Ómicron se disemina 20 veces más en interiores. Hubiera sido mucho más importante poner ventiladores y controladores de CO2 en todos los interiores, bares, etc, antes q sugerir mascarillas en exteriores"
9/ "Antes, con las primeras variantes, igual era realista intentar erradicar el virus, pero con omicron no se puede. Lo q es importante es q uno puede convivir con el virus, con algunas restricciones como mascarillas y interiores bien ventilados, también en los colegios"
10/ Y cuenta más cosas so leéis el artículo completo.

El entrevistado es @rafabengoa y el entrevistador @marioedlm
11/ Un artículo relacionado y muy bueno EMHO, con el punto de vista de la investigadora Australiana Raina MacIntyre @Globalbiosec está en este hilo de ayer (le podéis ir dando a traducir cada tuit si no leéis bien inglés):

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More from @jljcolorado

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
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
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
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
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
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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