Prof. Jose-Luis Jimenez @jljcolorado Twitter profile

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Prof. Jose-Luis Jimenez

2 years

1/ What were the historical reasons for the resistance to recognizing airborne transmission during the COVID-19 pandemic? Our peer-reviewed open-access paper is now published:

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ AIRBORNE TRANSMISSION OF RESPIRATORY VIRUSES A new peer-reviewed paper in @ScienceMagazine , reviewing the scientific literature on this topic. We conclude it is important not just for COVID-19, but also for other respiratory diseases such as the flu

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

"Oye, tu! Si, tu, la persona q lleva los últimos 2 años llevando la mascarilla y poniéndose las vacunas y haciendo lo necesario en silencio. Sólo quería decirte gracias. Un día se acabará esto, y será gracias a gente como tu. Eres formidable."

Aaron Hoyland

@aaronhoyland

2 years

Hey, you! Yeah, you, person that’s spent the last two years wearing your mask and getting your shots and just quietly doing the right thing. I just wanted to say thanks. One day we’ll be through this and it’ll be because of people like you. You rock.

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Prof. Jose-Luis Jimenez

@jljcolorado

7 months

An error in basic aerosol science, that keeps getting repeated. He is VAPING, generating a vapor, ISOLATED MOLECULES in the gas phase. Those pass the mask fine Then they condense to form aerosols OUTSIDE the mask, which scatter light & are visible Aerosol Science 101...

Andrew Bridgen MP

@ABridgen

7 months

Please believe your own eyes, the masks don’t protect you or those around you from respiratory viruses . They never have and they never will.

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ HOW TO AVOID TRANSMISSION and have #CleanAirHolidays ? Most important: understand and explain clearly that we get infected by breathing infected air (aerosols) exhaled by SOME (not all) the infected Mainly in close proximity, and in shared room air

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ TIME FOR SOME AIRBORNE + DROPLET HISTORY Now that @WHO and @CDCgov have finally accepted *after a year of denial and delays* that airborne transmission is a major mode for COVID-19, it is time to review the history to try to understand why this response was so poor.

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Transmisión del COVID-19 por el aire (aerosoles) Un video de 5 minutos donde explico cómo nos contagiamos, y cómo protegernos mejor Por favor compartir

Transmisión de la COVID-19 por el aire (aerosoles). Por José Luis...

- Preguntas frecuentes: http://tinyurl.com/preguntas-espanol- Dudas sobre transmisión aérea y ventilación respondidas por José Luis Jiménez:https://youtube.c...

www.youtube.com

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

I am one of the scientists that sent the letter to the Biden administration asking them to better protect workers against aerosol transmission. This employee was fired for correctly asking for those protections. Shame on Trader Joe's. And on @CDCgov 's inaction that allows this.

Ben Bonnema

@BenBonnema

3 years

trader joe's just fired me for sending this letter to the ceo, saying i don't share the company values. i guess advocating for a safer workplace isn't a company value?

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Prof. Jose-Luis Jimenez

@jljcolorado

8 months

Very IMPORTANT study - Vaccines or prior infection DO PROTECT against infection for low and moderate exposure to virus - Do NOT be protect if HIGH exposure So N95 masks, ventilation, filtration are CRITICAL, they can turn high exposures into low or moderate, avoid infection!

Prof. Akiko Iwasaki

@VirusesImmunity

8 months

A short 🧵on a recent study by @MaggieLind2 with @MHitchingsEpi @datcummings Albert Ko et al. Data show that immunity induced by vaccines, prior infection or both (hybrid) protects against SARS-CoV-2 infection when viral exposure is low to moderate (1/)

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Mascarillas, tapabocas, barbijos - Hilo Muchas noticias recientes: - en e.g. Alemania exigen FFP2 ( = N95) en el transporte publico - el Dr. Fauci recomienda doble mascarilla Hay mucha confusión. He consultado a los expertos y lo resumo aquí.

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ TEN SCIENTIFIC REASONS IN SUPPORT OF AIRBORNE TRANSMISSION OF SARS-CoV-2 Peer-reviewed publication in @TheLancet An honor to have collaborated in multidisciplinary team across medicine, infectious diseases, epidemiology, aerosol science, sociology

Ten scientific reasons in support of airborne transmission of SARS-CoV-2

Heneghan and colleagues' systematic review, funded by WHO, published in March, 2021, as a preprint, states: “The lack of recoverable viral culture samples of SARS-CoV-2 prevents firm conclusions to...

www.thelancet.com

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Articulo en @Nature : "La COVID-19 raramente se transmite por superficies. Entonces, ¿por que seguimos desinfectando superficies?

COVID-19 rarely spreads through surfaces. So why are we still deep cleaning?

Nature - The coronavirus behind the pandemic can linger on doorknobs and other surfaces, but these aren’t a major source of infection.

www.nature.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Italian study shows ventilation can cut school COVID cases by 82% "COVID infections were steeply lower in the 316 classrooms that had mechanical ventilation systems"

Italian study shows ventilation can cut school COVID cases by 82%

An Italian study published on Tuesday suggests that efficient ventilation systems can reduce the transmission of COVID-19 in schools by more than 80%.

www.reuters.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ Yesterday I debated a Philippines govt. expert, @EdselSalvana Reasonable debate, although he REFUSED to debate in person But he ended it with this LOGICAL FALLACY: an appeal to authority This has been SO common in this pandemic, that I'll explain it in a thread

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ HOW COVID TRANSMISSION WORKS: the short version I believe it is extremely important to communicate clearly how transmission really happens. Then, one can understand easily real ways to limit transmission. And it reduces resistance to e.g. masks.

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Lo siento, Doctor Simon, pero la evidencia de transmisión por aerosoles es apabullante. Y es la *mayoría de la transmisión* De lo que no tenemos hasta ahora evidencia es de que haya habido transmisión por gotas en medios sociales normales

Europa Press

@europapress

4 years

Simón: "No tenemos hasta ahora evidencia sólida de que haya habido transmisión probada por aerosoles en medios sociales normales"

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

HUGE DEVELOPMENT: CDC just accepted that the main way in which COVID-10 spreads is through aerosols!! "aerosols [...] produced when an infected person [...] sings, talks, or breathes can be inhaled and cause infection. **This is thought to be the main way the virus spreads**

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Of course children need masks. COVID is not a cold. It is a neurotropic virus, can go into the brain and lots of other organs. 1000 children dead in US, millions of kids w/ #LongCovidKids , millions have lost parents. Wearing mask is not hard for kids, they forget about it.

Renée Hoenderkamp

@DrHoenderkamp

2 years

This is the most awful photo I have seen this week. Children don’t need masks. End. No one needs a mask, omicron is a cold. My child WILL NEVER wear a mask because as her parent it is my job to defend her, not damage her.

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ The error conflating short-range airborne transmission (aerosol inhalation) with large droplet (sprayborne) transmission is alive an well in this Facebook post from a Philippines Government advisor: [Can't reply there, so I will here]

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ La principal fuente de contagio de la COVID es la transmisión por el aire ("por aerosoles") Es hora de q los distintos gobiernos, así como organismos como la OMS, lo reconozcan y creen guías de sanidad pública que ayuden a la ciudadanía a protegerse mejor #CovidEstaEnElAire

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Belgium imposes ventilation rules for businesses to combat new Covid surge Carbon dioxide monitors must be on public display so customers can see level of fresh air [My comment: An example for every other country to follow]

Belgium imposes ventilation rules for businesses to combat new Covid surge

Carbon dioxide monitors must be on public display so customers can see level of fresh air

www.irishtimes.com

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Prof. Jose-Luis Jimenez

@jljcolorado

1 year

@JVLazarus The conclusion that masks work, and that better masks are needed to address the DOMINANT airborne transmission of SARS-CoV-2 is the consensus of almost 400 international experts in the major DELPHI study led by @JVLazarus in @Nature :

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

The rise of Omicron Translated from @numeroteca

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ SUPERSPREADING IS EXPLAINED BY SHARED-ROOM AIRBORNE TRANSMISSION We can use that to estimate risk of transmission for omicron & other diseases Our peer-reviewed paper was just published (open access) in @EnvSciTech I'll explain it in this thread

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

EXTREMADAMENTE IMPORTANTE: la CDC de USA acaba de reconocer que la vía de transmisión más importante del COVID-19 son los aerosoles @sanidadgob @CSIC @el_pais @rtve @A3Noticias @PabloFuente @navedelmisterio

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

1/ Cómo reducir el contagio de COVID-19: aerosoles y "capas de protección" Excelente artículo infográfico en @el_pais , basado en mi estimador de contagio. Hablé con @javisalas y @Mariano_Zafra , y todos los detalles son correctos.

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Prof. Jose-Luis Jimenez

@jljcolorado

8 months

"We accept respiratory diseases right now, like colds and flu, as a way of life — but maybe we don't have to" @linseymarr said. "Maybe if we start paying more attention to cleaning our indoor air, we could really reduce the burden on our health & society"

Nationwide research looks to figure out how to stop spread of flu

Researchers now say it's possible that the flu is actually transmitted not just by large wet droplets, but by fine particles as well.

www.scrippsnews.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ Why is there such EXTREME RESISTANCE by @WHO , @CDCGov and IPC(*) to clearly state that COVID-19 is a dominantly AIRBORNE disease? TLDR: see slide *: IPC: Infection Prevention and Control scientists and professionals

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Coronavirus FAQ: I'm a one-way masker. What strategy will give me optimal protection? by @WStoneReports

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

The Atlantic: Coronavirus Ventilation: A New Way to Think About Air The Plan to Stop Every Respiratory Virus at Once The benefits of ventilation reach far beyond the coronavirus. What if we stop taking colds and flus for granted, too?

The Plan to Stop Every Respiratory Virus at Once

The benefits of ventilation reach far beyond the coronavirus. What if we stop taking colds and flus for granted, too?

www.theatlantic.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

I just participated at a panel at the #AAAR2022 conference. All the speakers wore N95s the whole time. Everyone understood the discussion*. And this is much safer for everyone. I don't want anyone to bring COVID back home [*At least as much as they normally understand my accent]

Faye McNeill

@vfmcneill

2 years

Excellent session on science communication at #AAAR2022 by awesome role models (and N95 runway models) @linseymarr @jljcolorado @ProfPeteD

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ ¿COMO EVITAR LA TRANSMISION DE COVID ESTAS VACACIONES? Lo + importante: entender que nos contagiamos al respirar aire infectado (aerosoles con virus) exhalado por ALGUNOS (no todos) los infectados En proximidad cercana, y en aire compartido en habitación #CleanAirHolidays

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Cada vez esta mas claro que #COVIDEstaEnElAire . En principio los virus respiratorios se pueden transmitir de 3 maneras: por superficies, por gotas proyectiles, y por el aire (“aerosoles”).

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ So @mvankerkhove of @WHO has admitted that #COVIDisAirborne , but they avoid saying it on purpose Does she think that decision has harmed the public health response, or cost lives? No, she says. "People know what they need to do to protect themselves"

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

"the risk of [heart attacks, arrhythmias, strokes, cardiac arrest, and more] substantially increased in those who had COVID-19 1 year earlier, compared with those who didn’t. Even people who never went to the hospital had more cardiovascular disease

COVID-19 takes serious toll on heart health—a full year after recovery

Giant study shows striking rise in long-term heart and vessel disease

www.science.org

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Prof. Jose-Luis Jimenez

@jljcolorado

1 year

Ventilation reduces the risk of COVID. So why are we still ignoring it? "Ventilation isn’t often measured because, in the absence of legislation mandating ventilation requirements and indoor air quality, no one is responsible for it"

Ventilation reduces the risk of COVID. So why are we still ignoring it?

When it comes to reducing the spread of COVID, ventilation is often an afterthought. But cleaner air needs to be front and centre of our COVID mitigation strategy. Here’s why.

theconversation.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

"COVID is Purely Airborne" From @WhiteHouse COVID-19 coordinator @ashishkjha @CDCgov @CDCDirector @WHO : can we please have this level of clarity in your communications? HT @LazarusLong13 @kprather88

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ ¿CÓMO PREVENIR LA TRANSMISIÓN AÉREA DE VIRUS RESPIRATORIOS? (incluyendo COVID-19) En artículo de @ScienceMagazine resumimos la evidencia científica q muestra que casi todos los virus respiratorios tienen transmisión importante por el aire (aerosoles)

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

For those of you in the 🇵🇭Philippines 🇵🇭, see the debate about COVID-19 transmission in this thread with @Teddybird , which I understand is high up on the COVID-19 response there. So far a good faith open debate, see what you think for yourself [A few branches on the thread]

krishlexMD

@krishlex

2 years

Finally professor @jljcolorado gets interviewed in the 🇵🇭. Professor: U.S. studies have shown that lateral barriers actually caused... via @YouTube @Teddybird @gideonlasco @DOHgovph @ntfcovid19ph @iamguidodavid @friaronwater

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

The Dutch government spreading misinformation and showing they have a **completely outdated** understanding about COVID transmission. There are ZERO proven cases of surface transmission, and @CDCgov has been telling us for a year that it is rare ()

Ministerie van VWS

@MinVWS

2 years

Goed je handen wassen is één van de basisregels om verspreiding van corona te beperken. Waarom is dit belangrijk? Omdat het virus je lichaam binnen kan dringen via je ogen en mond, plekken die mensen vaak met hun handen aanraken. Lees meer informatie ⤵️

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

On the right: how to do restaurants outdoors. On the left: how to turn outdoors into indoors and have almost the same risk

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Public display of CO2 in each movie in a movie theater in Japan. This shows ( in this case) low risk of transmission of COVID or other respiratory diseases. This can be done everywhere at low cost. #covidCO2

NOG

@NOGjp

3 years

今週のAC白山CO2濃度。本オープンしたあとだけあって先週より高いですなぁ。

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Children hospitalized with COVID-19 in US hits record "This is not last year's COVID. This one is worse & our children are the ones that are going to be affected by it the most," said Sally Goza, former president of the American Academy of Pediatrics"

Children hospitalized with COVID-19 in U.S. hits record number

The number of children hospitalized with COVID-19 in the United States hit a record high of just over 1,900 on Saturday, as hospitals across the South were stretched to capacity fighting outbreaks...

www.reuters.com

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ To those who say "COVID is harmless for children." Besides some deaths (e.g. 500+ children died of COVID in US in 2020), there is #LongCOVID . See this & next study: "English study finds long COVID affects up to 1 in 7 children months after infection"

English study finds long COVID affects up to 1 in 7 children months after infection

As many as 1 in 7 children may have symptoms linked to the coronavirus months after testing positive for COVID-19, the authors of an English study on long COVID in adolescents said on Wednesday.

www.reuters.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Vinay Prasad in London 1854: "If you are currently boiling the water in your home, then I am 100% sure that i disagree with you about cholera policy" "I am also 100% sure you are out of touch with 96% of Londoners who have returned to normal life" #AntiScience #FlatEarther

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

1/ A room, a bar and a class: how the coronavirus is spread through the air An outstanding visual about how several "layers of protection" can make us much safer indoors by @mariano_zafra & @javisalas via @elpaisinenglish

A room, a bar and a classroom: how the coronavirus is spread through the air

The risk of contagion is highest in indoor spaces but can be reduced by applying all available measures to combat infection via aerosols. Here is an overview of the likelihood of infection in three...

elpais.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

The BEST and CLEAREST short article I have read about AIRBORNE transmission of COVID: why history led to it's denial, and what to do about it By @crackedscience HT @KimABowie & @JANEMCARTHUR11

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ A sad anniversary: 1 year since one of the worst errors in the history of Public Health SARS-CoV-2 is mostly transmitted through the air But @WHO said, just a year ago, "FACT: IT IS NOT AIRBORNE" And that saying it was airborne was "misinformation"

World Health Organization (WHO)

@WHO

4 years

FACT: #COVID19 is NOT airborne. The #coronavirus is mainly transmitted through droplets generated when an infected person coughs, sneezes or speaks. To protect yourself: -keep 1m distance from others -disinfect surfaces frequently -wash/rub your 👐 -avoid touching your 👀👃👄

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

ABC News: Over 243,000 kids test positive for COVID-19 in 1 week, nearly setting new record

COVID-19 updates: More than 10,000 new deaths reported in US in 1 week

The United States is facing a COVID-19 surge this summer as the more contagious delta variant spreads.

abcnews.go.com

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ A year ago, @WHO started propagating an enormous error. Now we know that #COVIDisAirborne , and that surface transmission is low and large droplet transmission is minor. But @WHO has yet admit this clearly, which continues to create great confusion.

Maria Van Kerkhove

@mvankerkhove

4 years

#COVID19 is not airborne #COVID19 spreads via droplet & contact transmission For #HCW , @WHO has always recommended droplet precautions, except when preforming aerosol generating procedures, where we recommend airborne precautions See here:

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Parece q piensan q si nos contagiamos rápido todos, se acaba la pandemia. No funciona así. Más transmisión creará más variantes. No hay inmunidad duradera para un virus q cambia rápidamente.

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ AIRBORNE TRANSMISSION OF RESPIRATORY VIRUSES: THE COMIC VERSION Supplementary multimedia prepared by lead author @ChiaWang8 to our recent @ScienceMagazine peer-reviewed paper @kprather88 @linseymarr @zeynep @Lakdawala_Lab @zeynep

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Doctor who said masks cause carbon dioxide poisoning has license revoked "He frequently told his patients to remove their masks, even if they were suffering from COVID, & relied on his receptionist to determine how sick his visitors were by sight alone"

Doctor Who Said Masks Cause Carbon Dioxide Poisoning Has License Revoked

Steven Arthur LaTulippe, a doctor in Oregon, was also filmed boasting about flouting mask guidelines during a speech to a "Stop the Steal" rally.

www.newsweek.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

@Teddybird @krishlex @YouTube @gideonlasco @DOHgovph @ntfcovid19ph @iamguidodavid @friaronwater Well, I just lead a peer-reviewed paper that demonstrates (with epi data from real outbreaks) that superspreading is due to shared-room airborne transmission:

Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ SUPERSPREADING IS EXPLAINED BY SHARED-ROOM AIRBORNE TRANSMISSION We can use that to estimate risk of transmission for omicron & other diseases Our peer-reviewed paper was just published (open access) in @EnvSciTech I'll explain it in this thread

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@jljcolorado

3 years

"We are seeing more healthy children with no underlying condition with severe COVID, and that is different than the rest of the pandemic; There has been a switch,” said Dr. Allison Eckard, a pediatric infectious disease physician at MUSC."

Finley Smith

@finley_eliz

3 years

@jljcolorado 1 hospital in South Carolina has 8 kids on ventilators and 3 kids on ECMO. So there's that as well going on in the land of the "free"

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

1/ ?Cómo protegernos de la transmisión del COVID-19 por aerosoles? Analogía del humo. Pensar que todas las personas con que nos encontramos exhalan humo, y queremos respirar el menos posible Humo es aerosol, se comporta en aire muy similar a aerosoles respiratorios con virus

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

9/ But before we go into the history, there are other reasons to review. Most importantly, surface-droplet transmission is very CONVENIENT to those in power. And AIRBORNE trans. is an inconvenient truth (just like climate change, dealt with similarly)

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ CO2 during international airplane travel Will tweet the levels in different parts of the trip from the US to Spain with @lufthansa Not great in the check-in area. Lots of mediocre masks (poorly fitting surgical or cloth), also some N95s #covidCO2

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

@Teddybird @krishlex @YouTube @gideonlasco @DOHgovph @ntfcovid19ph @iamguidodavid @friaronwater @WHO Philippines is well-represented in the bad examples of practices that waste resources but do NOT reduce transmission (or even increase it, like lateral plexiglas barriers), e.g.:

Prof. Jose-Luis Jimenez

@jljcolorado

2 years

8/ PHILIPINES: schools using plexiglas barriers that have been shown to INCREASE transmission in schools (). Distributing alcohol for an AIRBORNE virus that goes poorly (if at all) via surfaces. And poorly-fitting surgical masks.

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ TRANSMISIÓN AÉREA DE VIRUS RESPIRATORIOS Articulo revisado por pares en @ScienceMagazine , evaluamos la evidencia científica. Concluimos que es importante no sólo para COVID-19, sino también para otras enfermedades respiratorias como gripe y resfriados

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Prof. Lidia Morawska, the leader of our "Group of 36 Scientists" that challenged @WHO from April 2020 on airborne transmission of SARS-COV-2, has been selected as one of the 100 Most Influential People of 2021 by @TIME

Lidia Morawska: The 100 Most Influential People of 2021

Find out why Lidia Morawska is on this year’s list

time.com

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Prof. Jose-Luis Jimenez

@jljcolorado

9 months

A reminder that masks work to prevent transmission of COVID-19. Here as consensus of 400 experts on @nature Bout NOT any mask. Need N95 / FFP2 of good quality (many fakes out there), that fits tightly against face I use 3M VFlex or 3M Aura personally, but lots of other opt.

Prof. Jose-Luis Jimenez

@jljcolorado

1 year

@JVLazarus The conclusion that masks work, and that better masks are needed to address the DOMINANT airborne transmission of SARS-CoV-2 is the consensus of almost 400 international experts in the major DELPHI study led by @JVLazarus in @Nature :

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ Several implications of this mask study: - N95 well-fit should protect 99%. The lower 83% in the real world likely in part due to LEAKS and POOR FIT Shows room for improvement of fit (N95 w/ straps behind head better than ear loop ones like KN95). Make sure tight to face

Linsey Marr https://www.threads.net/@linseycmarr

@linseymarr

2 years

New study showing that always wearing a good mask (respirator: N95,KN95) in indoor public settings is associated with much lower odds of +Covid test. Real-world evidence confirms basic principles and lab studies. comments from @jljcolorado and me

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

This is the take (on N95 vs surgical masks) of a former @WHO senior pandemic influenza communications advisor. And I agree with it 101%

Jody Lanard MD

@EIDGeek

2 years

So: I'm not an expert on masks and respirators. But I am 99.999% certain that 1000 amateurs wearing N95s without fit-testing are more protected, and less danger to others, than 1000 amateurs wearing loose floppy gaping sagging surgical masks. And don't get me started on cloth.

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

I wonder how much time has been wasted on surface disinfecting, poorly fitting masks, plexiglass, and handwashing, when everyone could have been using that time to protect themselves from the real #airborne transmission and ending this pandemic? We can do this, if @WHO helps

Maria Van Kerkhove

@mvankerkhove

2 years

I wonder how much time has been wasted on discussing the new #COVID19 variant name Omicron, when everyone could have been using that time to be more focused on saving lives and ending this pandemic? Let’s keep our eye on the end game here. We can do this.

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Prof. Jose-Luis Jimenez

@jljcolorado

1 year

1/ Surveying indoor ventilation in the US as I travel to a conference I'll use Aranet4 CO2 meter (see next tweet for details) At the @RideRTD Bus to the airport ventilation is very poor, worse than what I measured previously (but similar to meas. by others such as @DougChem )

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ DIEZ RAZONES CIENTIFICAS QUE APOYAN LA TRANSMISION AEREA DE COVID-19 Artículo revisado por pares en @TheLancet Un honor haber colaborado en un equipo multidisciplinar liderado por @trishgreenhalgh , con @kprather88 @DFisman @zeynep @chipatucsd

Ten scientific reasons in support of airborne transmission of SARS-CoV-2

Heneghan and colleagues' systematic review, funded by WHO, published in March, 2021, as a preprint, states: “The lack of recoverable viral culture samples of SARS-CoV-2 prevents firm conclusions to...

www.thelancet.com

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Mi explicación lo mas sencilla posible de CÓMO FUNCIONA EL CONTAGIO de COVID: Dominantemente lo inhalamos en 2 situaciones: hablar cerca de alguien (se confundió con gotas pesadas), o compartir aire en habitación (): HT @la_resistensia_

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

1/ Carta en Science sobre transmisión aérea de COVID-19 Se acaba de publicar:

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Prof. Jose-Luis Jimenez

@jljcolorado

1 month

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

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

3/ However, major public health organizations such as @WHO and @CDCgov were in complete denial, saying that airborne transmission was MISINFORMATION! (Disgracefully, @WHO has not deleted this tweet or clearly stated that it was an ENORMOUS error)

World Health Organization (WHO)

@WHO

4 years

FACT: #COVID19 is NOT airborne. The #coronavirus is mainly transmitted through droplets generated when an infected person coughs, sneezes or speaks. To protect yourself: -keep 1m distance from others -disinfect surfaces frequently -wash/rub your 👐 -avoid touching your 👀👃👄

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

"Some parents and teachers have cited concerns that masks harm kids by impairing their ability to breathe, slowing their social and emotional development, and causing them anxiety. But experts say that the science doesn’t back up those worries"

Do masks really harm kids? Here's what the science says.

As more states drop mask mandates, experts explain why keeping them on in schools is still a smart move for families and teachers.

www.nationalgeographic.com

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Lo siento pero esto es buena idea. Al hablar emitimos 10 veces más aerosoles que al respirar. Al gritar o cantar 50 veces más. Hablar menos en sitios cerrados de aire compartido es útil, dentro de lo que sea posible. En Japón hace meses que les piden no hablar en trans. público

DATHOS Science

@DathosBD

4 years

CORONAVIRUS #COVID19 “Investigadores del CSIC recomienda mantener silencio en el metro para prevenir contagios de coronavirus” Si esto es lo mejor que se les ocurre, que se echen a un lado. La siguiente ocurrencia collares anti ladridos como a los perros. Lucecitas de nivel...

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Extraordinario EDITORIAL de @Nature , revista científica más prestigiosa del mundo Diciéndoles a OMS @WHO y @CDCgov q dejen de marear la perdiz y digan claramente: - El virus se transmite sobretodo por el aire - Es difícil contagiarse por superficies

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

“Si uno va al supermercado, el peligro no está en las bolsas que trae, el peligro está en el aire que uno respira allí. Y lo que uno necesita es estar el menor tiempo posible en el supermercado, mejor ventilado, y con una mascarilla muy bien puesta.”

Uno de los científicos españoles más prestigiosos señala dónde está el mayor peligro de contagio en...

Acaba con uno de los grandes mitos.

www.huffingtonpost.es

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Lamentable q esta sea la realidad de las medidas en España mientras estalla el virus con la propagación más rápida conocida por la humanidad

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

How transmission can happen OUTDOORS when UNMASKED in CLOSE PROXIMITY [One person breathing the exhaled air of the other, with little dilution] HT @zeynep

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Escuelas y COVID-19 Hay mucha desinformación sobre este tema, en muchos casos por intereses politicos (se ocultan brotes o no se investigan etc.). La evidencia esta clara: hay bastante transmisión en las escuelas.

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

2/ Recognize that this is an INDOOR PANDEMIC 20 times more likely to get infected indoors than outdoors (can only be explained by airborne transmission) DO EVERYTHING YOU CAN OUTDOORS (family and work meetings, schools etc.)

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Vacunen a sus hijos en cuanto puedan. Nosotros vacunamos a nuestro hijo de 7 años en cuanto pudimos Y no escuchen las mentiras de q la COVID no afecta a niños (algunos casos graves y muertos, y mucha COVID larga). Y contagian a mayores (millones de niños han perdido padres)

Gorka Orive

@gorka_orive

2 years

Última hora!! España aprueba la vacunación contra la COVID19 para menores de 5 a 11 años. La Comisión de Salud Pública acaba de dar el visto bueno al inicio de la inoculación a este segmento de edad. Una vacuna eficaz y segura, según los pediatras.

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

Canada competing for the MOST IDIOTIC COVID-19 policy award!! Telling a top airborne transmission scientist that she needs to remove her better mask and put on a crappy one, before sharing the air in a bus! As the highly transmissible AIRBORNE Omicron grows exponentially

Linsey Marr https://www.threads.net/@linseycmarr

@linseymarr

2 years

Outrageous! I'm getting on a bus in Canada and was told I need to remove my N95 and put on a loose surgical/medical mask instead. @GovCanHealth needs to fix this. @DFisman

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Un video muy claro de la higienista australiana @kate_cole_ , explicando la diferencia entre las gotas de la OMS que caen al suelo, y los aerosoles que realmente nos contagian. Con subtítulos en español (por @Alejandro_Ibago )

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Berlin invierte 1 millón de euros en medidores de CO2 para las escuelas Esto se debería hacer en todos los locales públicos. Que la medida de CO2 visible desde todo el local. #NiUnaEscuelaSinMedirCO2

Lara

@Iamgoingtosleep

4 years

Berlin investiert eine Million Euro in CO₂-Messgeräte für Schulen

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

Spain's Ministry of Science: aerosol transmission may be dominant, and droplet transmission may have been overestimated.

Ministerio de Ciencia, Innovación y Universidades

@CienciaGob

3 years

Un informe científico español ha concluido que hay evidencia significativa sobre la transmisión del virus SARS-CoV-2 por aerosoles. El informe aconseja actividades en exteriores y ventilar para reducir la transmisión por aerosoles. ➡️

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

The filter in our son's mask is quite dirty after a week at school. Clearly it is working to remove aerosols from the air. Not just respiratory ones (which may contain viruses) but also dust, soot, wildfire smoke, allergens, mold...

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

1/ Must read from Dr. Raina MacIntyre: Key quotes: "As for denial of the risk in children, the majority of vaccine-preventable diseases that we vaccinate children against are mild in most children. Only a small percentage suffer serious complications"

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

7/ To this day, 0 proven cases of surface transmission And droplet transmission has NEVER been demonstrated, not just for COVID-19... but for ANY disease in the history of medicine! [Paper from Prof. Yuguo Li, member of @WHO IPC Committee]

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

3/ If you have to go indoors, there is NO SILVER BULLET. You need to do multiple things to reduce risk. I.e. the "SWISS CHEESE" model of @MackayIM #CleanAirHolidays

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Un experto mundial desmiente a Fernando Simón: "Lo siento, doctor Simón"

Un experto mundial desmiente a Fernando Simón: 'Lo siento, doctor Simón'

José Luis Jiménez, científico de la universidad de Colorado, ha respondido a las palabras de este jueves del responsable sanitario.

www.huffingtonpost.es

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

5/ This major error (IMHO one of most important errors in the entire history of Public Health) has had major consequences: - In early pandemic we focused on surfaces, which are minor or negligible - we ignored air, which was the dominant mode => lack of controlling transmission

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

"World’s slow recognition of airborne transmission of COVID was ‘most egregious public health error in modern history'"

World’s slow recognition of airborne transmission of COVID was ‘most egregious public health error...

Resistance to recognizing that COVID-19 is spread by airborne transmission resulted in “the most egregious public health error in modern history,” Dr. Joe Vipond told delegates to United Nurses of...

www.una.ca

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Prof. Jose-Luis Jimenez

@jljcolorado

8 months

A news piece in @Nature about the article about exposures to COVID in prisons that showed - vaccines protect from infection if exposure is low to moderate - do NOT protect from infection if HIGH exposure Thus reinforces reducing exposures: outdoors, ventilation, filt., N95 etc.

anil oza

@AnilOza16

8 months

what seemed like an intuitive truth throughout the pandemic — that longer exposure to people w/ COVID is riskier than shorter exposures — now has real world data behind it and it holds true for those that have prior immunity (study by @MaggieLind2 )

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Escuela Horizons en Boulder, Colorado: todas las clases afuera todo el invierno. Y aquí hace más frío que en Zaragoza!

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Prof. Jose-Luis Jimenez

@jljcolorado

1 year

. @WHO chief Scientist: "We were not forcefully saying: “This is an airborne virus.” I regret that we didn't do this much, much earlier."

Kimberly Prather, Ph.D.

@kprather88

1 year

WHO’s departing chief scientist regrets errors in debate over whether SARS-CoV-2 spreads through air

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Prof. Jose-Luis Jimenez

@jljcolorado

9 months

Sudden DECREASE IN AIR POLLUTION improves HEALTH immediately & over 3 yrs Pittsburgh: a highly polluting coke plant is suddenly closed - Emergency visits for cardiovascular disease decreased 42% immediately, continued over 3 yrs - No change in control

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Prof. Jose-Luis Jimenez

@jljcolorado

3 years

1/ Schools & COVID-19 A lot of misinformation on this. Best evidence: there is considerable transmission in schools. So schools should be opened only w/ low community transmission, and w/ mitigation measures: high-quality & well-fitted masks, less density, ventilation, CO2...

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Prof. Jose-Luis Jimenez

@jljcolorado

2 years

2/ Soon after COVID-19 pandemic started, it was clear to many scientists (inc. those who understand aerosols) that AIRBORNE trans. was an important contributor E.g. as soon as we talked to the Skagit choir, it was obvious that was airborne-dominated:

Transmission of SARS‐CoV‐2 by inhalation of respiratory aerosol in the Skagit Valley Chorale...

During the 2020 COVID-19 pandemic, an outbreak occurred following attendance of a symptomatic index case at a weekly rehearsal on 10 March of the Skagit Valley Chorale (SVC). After that rehearsal,...

onlinelibrary.wiley.com

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Prof. Jose-Luis Jimenez

@jljcolorado

8 months

"The @CDCgov received considerable pushback. Particularly concerning were stories that patients were afraid to go to appointments because they risked becoming infected while seeking care due to healthcare workers refusing to mask"

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Prof. Jose-Luis Jimenez

@jljcolorado

4 years

Escribí al CCAES el 4-Sep, a @fernandosimon_ el 6-Sep, ninguna respuesta. Estamos hablando directamente con gente de muy alto nivel dentro de @CDCgov y la OMS ( @WHO ). Y me contactan de ministerios de otros países. Pero de @sanidadgob nada... #FernandoSimonLeeTuCorreo

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