Discover and read the best of Twitter Threads about #hepa

Most recents (24)

Ever wonder, how did we get to this place where clinicians and scientists discourage people from taking basic health precautions, like wearing #N95 masks or running #HEPA filters to deal with wildfire smoke?

Look no further than the tobacco industry's historical playbook.

1/6 Journal article: "The ...
By the 1950s, the data were in. Smoking causes lung cancer. The facts were overwhelming.

The tobacco industry responded by launching its own junk science funding program and propping up experts who would question established findings.

Great review:…

2/6 Am J Public Health. 2012 Ja...
The Tobacco Industry Research Committee (TIRC) funded & propped up scientists who used favorable messages.
🔹There are no RCTs, only observational data. Lung cancer could be caused by alcohol or genetics.
🔹Seeding doubt
🔹Promoting fatalism
🔹"Don't be afraid"
Read 6 tweets
In JAMA Oncology today, the "debate" continues.

Should hospitals do MORE or less to help people with #cancer avoid severe outcomes from COV1D?

I'll take you through each article! 🔁

1/… Graphic of 4 articles in JA...
Dr. @drlennardlee and colleagues found that people with #cancer had diminished vaccine antibody response, leading to breakthrough infections and hospitalizations.

2/… Selected graphs. Diminished...
Dr. Lee's study was one of the best I've read in a long time, so we wrote an Editorial building on it.

We offered 10 tips for hospitals to provide people with #cancer with more comprehensive supports.


Read 14 tweets
Bird 'flu

Public awareness of the risks posed by bird 'flu is seriously lacking it is not sensible to travel whilst infected.

"Pandemic fatigue" had significantly impacted people's attitudes to Covid, and likely to any new pandemic 'flu.

"Learning to live with Covid" by undermining mask use and downplaying Covid's severity will have serious consequences.

If bird flu were to develop human-to-human transmission, it could have devastating consequences due to its high mortality rate.

50% mortality for H5N1 is huge.

Who dies in flu pandemics?

In 1918, mortality was highest in;
👶 u5 yrs
🤵 20-40 yrs
👵 65 yrs+

Obviously, the Clinically Vulnerable (those offered annual 'flu vaccines) have higher risks, too.
4/ Viral factors Seasonal infl...
Read 8 tweets
'𝗩𝗲𝗻𝘁𝗶𝗹𝗮𝘁𝗶𝗼𝗻* is an important line of defence for infection control in the healthcare environment.' @NHSEngland
✍️1,077,993 people currently predicted to have symptomatic COVID in the UK: report @Join_ZOE 9 May 2023.
Healthcare settings to note:… Image
✍️Important notice for healthcare settings:
'Application of #HEPA filter devices for air cleaning in healthcare spaces: guidance and standards.'
✍️Ventilation* is an important line of defence for infection control in the healthcare environment. @NHSEngland… Image
The current focus on #𝗩𝗲𝗻𝘁𝗶𝗹𝗮𝘁𝗶𝗼𝗻 highlighted areas of 𝗵𝗶𝗴𝗵 𝗿𝗶𝘀𝗸 due to 𝗽𝗼𝗼𝗿𝗹𝘆 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗶𝗻𝗴 and 𝗶𝗻𝗮𝗱𝗲𝗾𝘂𝗮𝘁𝗲 𝘃𝗲𝗻𝘁𝗶𝗹𝗮𝘁𝗶𝗼𝗻 in 𝗵𝗼𝘀𝗽𝗶𝘁𝗮𝗹𝘀 and other 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝘀𝗲𝘁𝘁𝗶𝗻𝗴𝘀. @NHSEngland… Image
Read 19 tweets
Following @michaelgove's ridiculous suggestion to remove child benefits from families absent from school - rather than tackling the cause - @BBCPolitics discussed the topic.

@CamillaTominey might be interested to know that the government *do* know where the missing kids are.
Clinically Vulnerable Families and @LongCovidKids have serious unaddressed concerns.

The majority of children not in schools from Clinically Vulnerable Families are in housesholds denied safe learning environments. Off-rolled in the interests of the school, not the child.

2/ Ghost Children 56% of Clinically Vulnerable Families have be
How do we know the government knew?

We told them. We phoned, we emailed, we attended an APPG on Coronavirus.

@LaylaMoran spoke to @GavinWilliamson in parliament and then met with @NickGibbUK where she outlined the issues we were facing... the issues that we *still face*.

2/ Layla Moran > (Oxford West and Abingdon) (LD) [V] Share May Gavin Williamson Share I very much agree that that sort of l
Read 10 tweets
1/8 "#Ultraviolet #germicidal #irradiation (#UVGI) is known to #inactivate various #viruses and #bacteria, including #SARSCoV2, and is widely applied especially in #medical facilities."

#COVID19 #CovidIsNotOver #COVIDisAirborne…

An abstract thread 🧵...
2/8 "This #inactivation results from the #high #photon #energies causing #molecular #bonds to break, but when #nonpathogen #molecules are affected, #unwanted #effects may occur."
3/8 "Here, we explored the effect of a commercial high-intensity (∼2 kW) #UVC #disinfection device on the #composition and #concentration of #gases and particles in #indoor #air."
Read 8 tweets

We have a deadly and disabling airborne disease just being allowed to circulate.

I now have a fever, cough, etc. I am sick. I care for patients. I am getting PCR testing, but we have to cancel/reschedule my patients booked for tomorrow and likely next week.

We have to stop pretending covid isn't serious.

We have to stop pretending covid isn't directly and massively contributing to our current health care crises.

We have to stop pretending individual protections are enough. They aren't.

Covid is serious, it's wrecking our health system, and we need society-level measures to stop its damage.

@JasonCoppingAB @GoAHealth we need:
1. N95 masks + mandates
2. Indoor air quality measures (ventilation, filtration (#crboxes #hepa), and air sterilization (far UVC)

Read 8 tweets
Ich trage immer noch eine #Maske.
In der Arbeit.
Im ÖV.
Beim Einkaufen.
Bei gesellschaftlichen Anlässen ausser in gut belüfteten hohen Räumen mit wenig Leuten.
Für mich ist das Risiko ohne zu hoch, weil ich #SARSCoV2 immer noch als sehr gefährlich einschätze. #Maskebleibtauf 1/6
Das Risiko, trotz 1x #BA2-Infektion und bivalentem #Booster einen schwereren Verlauf zu haben.
Das Risiko für #LongCovid.
Das Risiko von Langzeitfolgen für Gefässe, Gehirn und Immunsystem.
#Politik und die meisten Medien haben mit der #Pandemie abgeschlossen.
#SchwereSchuld 2/6
#SARSCoV2 ist aber mit uns noch lange nicht fertig.
#XBB15 ist Paradebeispiel für dessen rasante Evolution.
Die Übersterblichkeit, der schlechte Gesundheitszustand der Bevölkerung und die rezenten Infektionswellen der #Kinder sollten Warnung genug sein.
#CovidIsNotOver 3/6
Read 6 tweets
1/4 "Researchers from the University of Colorado Boulder found in a 2019 study that the average house is prone to “#indoor #air quality levels on par with a polluted major city.”"…
2/4 "Preliminary results from the study show that #air #quality levels were so poor at the end of the study, the researchers had to recalibrate their #sensitive instruments almost immediately."

#indoor #air #quality
3/4 "So, breathe easy by investing in a high quality #air #purifier. If you’re looking for the best air purifier on the market, we did the research for you by scanning 12 #expert #reviews."
Read 4 tweets
In an Invited Editorial in @JAMAOnc today, my colleagues & I call for health systems to develop “Comprehensive #Pandemic Support Programs” for their most vulnerable patients.

These are our Top 10 Tips!

THREAD 🧵… JAMA Oncology article, "Variability in COVID-19 Vaccine
Tip #1: Health systems should explain to all patients that #COVIDisAirborne and is best avoided through multi-layered mitigation. Swiss Cheese model of COVID mitigation
Tip #2: Health systems should prioritize getting the most vulnerable patients vaccinated & boosted.

Offer #vaccines on-site w/the SAFEST options.

Vulnerable patients want highly-ventilated or outdoor options & high-quality (e.g., N95) masks for safety. Make it happen. Vaccination given while clinician wears an N95 outdoors
Read 15 tweets
We are excited to announce the launch of

Long Covid Doctors for Action
💥 @LCD4A 💥

a UK doctor advocacy and campaign group who are committed to..🧵
1a. To campaign and advocate for doctors with #LongCovid to remain in employment and to continue to have an income.

1b. To campaign for a contingency plan for UK doctors with #LongCovid who cannot remain in employment or lose their jobs, including:

👉🏽 routes to personal injury payments;

👉🏽 occupational injury compensation;

👉🏽 ill health retirement
Read 15 tweets
Die #RSV-Welle befeuert die #Immunschuld-Debatte.
Die Ursachen sind sicher komplex und es ist durchaus plausibel, dass die in der Bevölkerung nun vollends geschwundene Vorsicht die Infektionswellen begünstigt.
Es wird hier bewusst ein Narrativ geschaffen, das von #SARSCoV2 als möglichen Cofaktor ablenkt und die Massnahmen als negativ anprangert.
Letztendlich führt dies zu grosser Verunsicherung bei den Eltern und der fehlgeleiteten Ansicht, dass eine Exposition für Kinder gut ist. 2/3
Dabei ist der Punkt, dass gerade JETZT Massnahmen wie #HEPA-Filter etc. zum Schutz der Kinder vor ALLEN respiratorischen Viren wichtig wären.
Das #Immunsystem muss nicht trainiert werden.
Im Gegenteil, zu häufige Infekte schwächen es.
Ganz besonders gilt das für #COVID19. 3/3
Read 3 tweets
Every Child Deserves A

Have a look at the comparison charts for
The improved
UK DIY #CorsiRosenthalBox
Uses a quiet VentAxia BoxFan
Domestic & Commercial #HEPA brands
In a typical classrm 150m3
To supplement air from windows
5-6 ACH of clean air recommended can be provided by #AirFilterUnits

1 number
DIY #CorsiRosenthalBox
Is required circa £180
& £50 for protective IKEA enclosure
Download instructions here: 3d diagram of UK DIY Corsi Rosenthal box arrangement and pho
Compare to the

Approved supplier models
That schools can choose to buy

A typical classroom volume needs
- 3 x Camfil City M @ circa £5310 noise of unit <45db ( DfE Guide cost)

- 6 x Dyson TP09
@circa £2554 but at a high noise levels (DfE guide cost)
Read 13 tweets
1/ 🧵 «Luftqualität in Schulräumen effektiv verbessern» angenommen als Postulat!
Sarah Gabi überzeugt den #grbe von der Notwendigkeit und Dringlichkeit, dass der Regierungsrat unter Berücksichtigung der wissenschaftlichen Erkenntnisse Massnahmen ergreift, ...
2/ Der Regierungsrat wird somit u. a. beauftragt, Massnahmen zu ergreifen, welche für eine ausreichende Ventilation und Filtration sorgen.
Im Video kann das Votum von @sarah_gabi_ nachgehört werden. Einige Highlights:

«Liebe Kolleginnen und Kollegen, ...»…
3/ «CO2-Messgeräte sind schon mal ein Anfang und sie sind wichtig, auch in der Volksschule, denn wir können ja die schlechte Luftqualität nicht sehen. Und wenn wir sie riechen oder wenn wir Kopfweh bekommen, dann haben wir schon eine zünftige Ladung verbrauchter Atemluft intus.»
Read 11 tweets
1/ Ocean-Going COVID Vessel.

Another reminder this pandemic is far from over. Significantly reduce inhalation dose of virus-laden respiratory aerosol particles to significantly reduce chance of infection (+ spread to family, friends, & colleagues).…
2/ Vaccinate to lower chance of severe outcome if infected. How do you lower inhalation dose for yourself and others (if you are infected)?
3/ Test before spending time with others or others spend time together for family gatherings, etc., and isolate if +. Meet outdoors if possible. Avoid being in crowded indoor environments - especially around those you do not know (oh, I don't know ... maybe cruise ships).
Read 5 tweets
🔥🔥Buena noticia.
Una actualización sobre #medidoresCO2 y #filtros de aire para colegios financiados por el estado.
LCK espera que esto se haga rápido y que la orientación sobre el uso sea adecuada.
Los filtros en todas las escuelas se ha vuelto esencial.
24 de noviembre: actualización de todos los entornos y proveedores de educación y cuidado infantil de UK correo electrónico:
•una actualización sobre los monitores de CO2 y las unidades de purificación de aire para entornos educativos financiados por el estado
DfE proporcionará #medidoresCO2 para el 50% de escuelas públicas que no recibieron el año pasado. Y ofrece otra oferta para los #HEPA, pero solo para las escuelas que pueden muestren salas > 1500 ppmCO2, lo que indica una mala ventilación, y no > 800 ppm como recomiendan expertos
Read 9 tweets
Also, fangen wir mal hinten an, Ich werde jetzt nach und nach #Literatur zu den #Luftreinigern twittern, um die Diskussion zu substantivieren.

I'll do that mainly in English, at times in German.

Let's start. (AC-1) Nature News, October 2021.
1 Image
Of course, this is only a #News article in @Nature. The paper, at that time only a preprint, now appeared here:

AC-2 =
2 Image
In this work, authos state "Here we present
the first data providing evidence for the removal of SARS-CoV-2 and microbial bioaerosols from the air using portable air filters with UV sterilization on a COVID-19 ward."

I think this is true, in the paper actually particles...
Read 128 tweets
Pediatric hospitalizations are surging. Cases of all respiratory viruses surging. #COVID is rising again too. It’s time we #BringBackMasks and use that hashtag #️⃣ going forward.

#COVIDisAirborne #CovidIsNotOver
2) Not just in US, but after the start of Oktoberfest, #Covid infections in Munich have increased significantly, per 🇩🇪 RKI.

Case numbers rose 77% vs the previous week, compared to 43% in Bavaria & 29% in Germany.

Covid hospitalizations are also up.…
3) There is a definitely a new #COVID wave hitting Western Europe.…
Read 17 tweets
Know someone having a baby soon? CONGRATULATIONS! 🍼🍼🍼

As hospitals drop universal COVID protections, these are my top 7 tips for protecting unmaskable un-vaxable newborns from #nosocomial (hospital-acquired) COVID.

What did I miss?

THREAD of Top 7 Tips 🧵
Tip #1 – Determine your #mask rules. Some parents require staff to #N95. Compliance would vary by region/hospital. Prep for what you’ll say if staff don’t comply.

With our newborn twins, we supplied medical staff w/free N95s & tests. Nobody wanted N95s; 1 took a #RAT. 🤣
Tip #2 – U.S. hospitals SHOULD have excellent ventilation (air cleaning) by reg. But HVAC repair doesn’t have a CPT code. Many of my best & worst air quality readings are from hospitals.

Consider buying a #CO2monitor, read on that hashtag, & follow @joeyfox85 for basic tips.
Read 9 tweets
Soy #psicólogo clínica de la salud, #investigador médico y #estratega.
Si me seguiste el año pasado, probablemente estuvo relacionado con nuestro #COVID #mitigation trabajo. ¡Estas son algunas de mis publicaciones que pueden resultarle más útiles! 1/16
Mike Hoerger, PhD MSCR MBA
En primer lugar, #COVIDisAirborne . Ninguna estrategia de mitigación tendrá éxito sin reconocer esa verdad.
Necesitamos rastrear COVID. Con los sitios de prueba federales de EE. UU. cerrados, el mejor rastreador de positividad de los últimos 6 meses ha sido Walgreens.
Read 16 tweets
1/2 "Researchers at #Case_Western_Reserve_University found wide #genetic #variation in #SARSCoV2 #viruses among 360 patients whose #viral infections were genetically sequenced, showing that all individual #infections include multiple #variants of the #virus."
2/2 We are in a pandemic of unmitigated community transmission, a pandemic of denialism. We must suppress transmission.

#COVID19 #CovidIsNotOver #SARSCoV2 is #airborne #SafeIndoorAir #ventilation #HEPA #filtration #indoor #air #sanitation #rear #test #trace #isolate #Quarantine

H/T @LisaForKansas

We must complement vaccine induced protection, hybrid immunity and natural immunity with non-pharmaceutical interventions to suppress community transmission. We must!
Read 4 tweets
📍N95 MASKS WORK—"We found combination of a #N95 mask that passed a quantitative fit-test & portable #HEPA filter **provided near complete protection** against high viral aerosol loads at close range for prolonged periods of time"—while surgical did not.…
2) Damning—“Critically, surgical masks provided inadequate protection against skin and upper airway contamination, even when combined with HEPA filtration and at distances of 2.70 m."

Lesson—use #N95 masks, not just flimsy surgical masks. @projectn95
3) Please remember that #COVIDisAirborne — very much so. Which means faceshields and plexiglass are minimal benefit — and hence any health leader who still tells you to use them or tells you to not get N95 or KN95 or KF94– needs to get dismissed.
Read 6 tweets

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