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Prof. Jose-Luis Jimenez Profile picture
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Jan 10 • 10 tweets • 10 min read
117S/MÉXICO🇲🇽: stronger denial of dominant AIRBORNE transmission, still emphasizing surfaces by @lopezobrador_ & @HLGatell

Spraying ppl w/ disinfectants, disinfect under shoes... despite 0 proven cases of surface transmission (cdc.gov/coronavirus/20…)

ImageImage
118S/MÉXICO🇲🇽:(Sinaloa @sinaloagobmx): spraying disinfectants into the air in empty conference rooms.

Absurd waste of resources and disinfection theater, disinfectants can be toxic to people entering rooms later. Unclear what goal is?

#COVIDHallofShame

119S/ PHILIPPINES🇵🇭: strange barriers in motorcycles to avoid transmission among riders. But limited trans. outdoors (pubmed.ncbi.nlm.nih.gov/33249484/), mostly talking face-toface, nearly impossible when moving, esp. mask & helmet

[I am told this is still in use]

newsinfo.inquirer.net/1318095/ano-st… Image
120S/CANADA🇨🇦(BC School Board Trustee)

Spreading misinformation about usefulness of filtering in classrooms. Mechanical Vent + MERV13 is useful, but almost always not enough. HEPA or #corsirosenthalbox would help A LOT, esp. w/ omicron

#COVIDHallofShame

121S/ NETHERLANDS🇳🇱 (Government @Rijksoverheid):

Absurd advice on schools:
- importance of ventilation unclear (AIRBORNE virus who.int/news-room/ques…)
- Handwashing & disinfection MORE important (0 proven cases surface trans. cdc.gov/coronavirus/20…)

rijksoverheid.nl/onderwerpen/co… Image
122/CANADA🇨🇦: (Dr. Deena Hinshaw @CMOH_Alberta):

States that there is "no conclusive evidence" that N95 masks are better than surgical masks. For the fastest transmitting AIRBORNE virus (who.int/news-room/ques…) ever! Ignores science.

#COVIDHallofShame

Image
123/ MEXICO🇲🇽(@GobiernoMX): ABSURD ad about COVID transmission:

- virus infects people outdoors, far away from others
- Only recommendation is to eat healthy foods
- from govt. that continues to DENY airborne transmission

#COVIDHallofShame

124S/ SPAIN🇪🇸(by Swedish🇸🇪@IKEA):

2 years into an AIRBORNE (who.int/news-room/ques…) pandemic, they still say handwashing is BEST defense against COVID!!

They say they "are monitoring the situation"... every 3 years??

#COVIDHallofShame

@IKEA 125S/ CANADA🇨🇦: Vancouver Coastal Health (@VCHhealthcare)

FULL DENIAL OF SCIENCE in their advice. Keep repeating totally outdated #DropletDogma. Even @WHO admits #COVIDisAirborne (who.int/news-room/ques…). AGPs generate less aerosols than talking or coughing

#COVIDHallofShame Image
126S/MÉXICO🇲🇽 (Alcaldía Gustavo Madero @TuAlcaldiaGAM): spraying a disinfectant on people outdoors.

But #COVIDisAirborne and barely goes thru surfaces (0 demonstrated cases). Spray may be toxic. Wasting $$, distribute N95 instead

#COVIDHallofShame

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More from @jljcolorado

Prof. Jose-Luis Jimenez Profile picture
Apr 7
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 Image
2/ Waiting at the security line @DENAirport

Ok, not bad given the number of people Image
3/ Departure Gate at @DENAirport. Not bad, despite lots of people.

#covidCO2 Image
Read 31 tweets
Prof. Jose-Luis Jimenez Profile picture
Mar 29
1/ "Our Early Confusion About Airborne COVID-19 Transmission Still Haunts Us"

Op-Ed in @TIME by @linseymarr and yours truly

I quote a few key items in this thread.

time.com/6162065/covid-…
2/ "2 yrs after the pandemic began, we finally have a good understanding of how COVID-19 is transmitted: some infected people exhale virus in small, invisible particles (aerosols). These do not fall quickly to the ground, but move in the air like cigarette smoke."
3/ "Other people can get infected when breathing in those aerosols, either in close proximity, in shared room air, or less frequently, at a distance."

Not only aerosol scientists say this. The @WhiteHouse also states this with very similar words: whitehouse.gov/ostp/news-upda…
Read 9 tweets
Prof. Jose-Luis Jimenez Profile picture
Mar 24
1/ El Gobierno de EEUU (La Casa Blanca, @WHOSTP45) por fin admite claramente que la COVID-19 se transmite sobretodo por aerosoles, por el aire ("airborne" = transmision aerea)

#COVIDisAirborne #SonLosAerosoles

whitehouse.gov/ostp/news-upda…
2/ "La forma más común de transmisión de COVID-19 es por pequeñas partículas que flotan en al aire [=aerosoles] minutos o horas después de que una persona infectada las haya exhalado"

"Hay varias estrategias para evitar respirarlas [..] y es importante limpiar el aire interior" Image
3/ La Administración Biden-Harris ha identificado la calidad del aire interior como una herramienta importante para luchas contra la transmisión de enfermedades de transmisión aérea en el Plan Nacional de COVID-19 (whitehouse.gov/covidplan/)" Image
Read 13 tweets
Prof. Jose-Luis Jimenez Profile picture
Feb 12
1/ Un buen artículo en @el_pais sobre los TIPOS DE MASCARILLAS y por qué las FFP2/3 o N95 son necesarias para COVID-19 en interiores

elpais.com/sociedad/2022-…
2/ ?Por qué funcionan las mascarillas? Porque el COVID se transmite sobre todo por inhalación de aerosoles que contienen virus. Hasta la OMS lo ha dicho!

Por eso es PANDEMIA DE INTERIORES (pubmed.ncbi.nlm.nih.gov/33249484/). Y en interiores en cuando las mascarillas son más importantes
3/ Los aerosoles se pueden inhalar en proximidad, al hablar con alguien (muchos contagios).

Y se acumulan en interiores. Paredes y techo son una caja q atrapa el aire

Todos los casos de superpropagación son por aire compartido en un local cerrado:
Read 12 tweets
Prof. Jose-Luis Jimenez Profile picture
Feb 11
1/ ¿CUANDO podremos volver a NORMALIDAD DE ANTES DE LA PANDEMIA?

Traduzco y adapto hilo de @chrischirp, investigadora médica de @UCL, miembro de @IndependentSage en Reino Unido

"El mundo de antes del 2020 ya no existe -- aunque nos pese"

2/ Hubo graves errores, en particular:

- la pobre actuación de las autoridades de Wuhan, que permitió al virus expandirse mientras decían q "aquí no pasa nada"

- la negación de q el virus se transmite por el aire por la OMS @WHO, @CDC, y casi toda la Salud Pública mundial
3/ - La mala gestión al final del la primera ola, cuando todavía era factible eliminar al virus, pero donde se bajó la guardia demasiado deprisa

La realidad es que hemos añadido una nueva enfermedad a la población, más infecciosa y más severa que la gripe
Read 22 tweets
Prof. Jose-Luis Jimenez Profile picture
Feb 5
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
2/ Also likely impact of fake KN95 that don't filter well.

Don't buy KN95 on Amazon, full of fakes. Buy from reputable safety suppliers

Korean KF94 better, few fakes

[Of course there could also be a few % of transmission thru eyes or other minor pathways + "experiment noise"]
3/ IMPORTANT that the reports are the 1-way protection in same indoor environments.

If everyone wears similar masks, the we get (approx.) the effect SQUARED

17% of virus escape infected (100-83). And 17% of virus in air is inhaled. So prob. Of infection 0.17^2 = 3% vs. no mask
Read 10 tweets

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