Discover and read the best of Twitter Threads about #hepa

Most recents (24)

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

pubs.acs.org/doi/10.1021/ac…

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
Enough.

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.

1/7
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.

2/7
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)

3/7
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.”"

eurekalert.org/news-releases/…
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 🧵
jamanetwork.com/journals/jamao… 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.

@TheBMA
@HCSANews
@DoctorsInUnite
@LCNMUK
@longcovidwork
@EveryDoctorUK
@TheDA_UK
@DAUK_GP
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.
ABER ES GIBT KEINE IMMUNSCHULD ODER NACHZUHOLENDE INFEKTE. 1/3
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
#CleanAirClassroom

📢
Have a look at the comparison charts for
The improved
UK DIY #CorsiRosenthalBox
Uses a quiet VentAxia BoxFan
Vs
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

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

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, ...
#SaubereRaumluft
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, ...»
tagblatt.gr.be.ch/shareparl?agen…
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).

abc.net.au/news/2022-11-2…
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:
ACCIÓN
•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 = bit.ly/3EMNQWs
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...
3
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.
sueddeutsche.de/muenchen/oktob…
3) There is a definitely a new #COVID wave hitting Western Europe. pandem-ic.com/covid-waves-eu…
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.
2/16
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.
3/16
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. academic.oup.com/jid/article/22…
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
1/ Just another reminder that his global pandemic is far from over. Reduce inhalation dose significantly to significantly reduce chance of infection. Fully vaccinate to reduce chance of severe outcome if infected.
2/ The fool proof way to reduce inhalation dose of virus-laden respiratory aerosol particles is to not put yourself in a position to be in the presence of those infected. This is not possible for most people, and so the next best approach (by far) is to ...
3/ Wear a high-quality mask (e.g., N95) in shared indoor spaces or in a home where someone is infected and isolating. After that, increase ventilation where you have control to do so or request/demand of others where possible and ...
Read 10 tweets
NICHTS wurde getan, um die Kinder in der #Schule vor #SARSCoV2 zu schützen.
Keine #HEPA Luftfilter.
Keine Konzepte für Tests und #Maskenpflicht.
Keine Impfkampagne.
Stattdessen sollen mancherorts infizierte Lehrer und Schüler am Unterricht teilnehmen. 1/3
#SchuetztdieKinder #BA5
Die Kinder sind nicht unverwundbar, auch wenn das einige Kinderärzte stur behaupten.
#LongCovidKids ist in zahlreichen Studien belegt, die Zahlen aus der #GBD-Hochburg UK sind erschreckend.
Langzeitfolgen für Gefäss-, Nerven-, Immun- und endokrines System sind wahrscheinlich. 2/3
Auch die Eltern haben kaum eine Chance, sich vor einer #SARSCoV2 Infektion über die Kinder zu schützen.
Und so beginnt diese gut dokumentierte Infektionskette mit dem neuen Schuljahr.
Gefördert durch das Komplettversagen der Behörden.
#SchwereSchuld #ProtectTheKids 3/3
Read 4 tweets
1/ Another reminder that this global pandemic is far from over. Vaccinate fully to lower chance of severe outcome if infected AND significantly lower chance of infection by significantly reducing inhalation dose of virus-laden respiratory aerosol particles.
2/ Wear a high quality mask/respiratory, e.g., N95, while indoors in public/work spaces or crowded outdoor spaces in close contact, increase ventilation where possible, have meeetings outdoors. Not rocket science.
3/ Employ particle filtration, including proven #HEPA air cleaners and #CorsiRosenthalBox es., & employ when feasible upper-room UV to inactivate viruses in respiratory aerosol particles. Not rocket science.
Read 4 tweets
Top 10 tips everyone should know about wearing #N95 & #elastomeric masks.

What did I miss?

THREAD! Image
Tip #1: Masks buy time. Context matters too: Ventilation (HVAC/outdoor air), filtration (HEPA), & ⬇️ people buy more time.

The longer you’ll be someplace or the worse the context, the better the mask you’ll need.

In a “typical” setting, you might expect this (per @akm5376): Image
Tip #2: If you’re going to be someplace a long time (home, office, hospital, wedding), open windows, add #HEPA, turn HVAC from ‘auto’ to ‘on' & do testing.

BOOM, you just improved your mask. Better context = less work for the mask.

Read 12 tweets
Kids <2 yrs old can’t mask.
Kids <6 months can’t vax.

Many parents are using strollers w/rain covers to try to get some protection during essential activities.

Does adding a #PAPR or #HEPA device help?

I tried 6 models: engrxiv.org/preprint/view/…

#PAPRbuggy #HEPAbuggy
1/10 Image
First off, thanks @RealSexyCyborg for the original design. Thanks to @ccwake1, @gjmf, @drgregkelly for ideas too. Happy to acknowledge!

My goal was to test 6 models & help relate them to non-engineers.

2/10

The PAPR & HEPA buggies I tested had an estimated 57-951 air changes per hour (ACH) in these TINY spaces. The worst design had about 3x the air cleaning of an OR.

You can make a #PAPRbuggy that’s super discrete for about $110 more than an existing stroller & rain cover.

3/10 Image
Read 10 tweets
For them to admit Covid is now airborne would be to admit past mistakes and liability. Instead they would rather perpetuate the lie, condemning healthcare workers and patients to avoidable death and ill-health. @WHO @TheBMA @H_S_E @DHSCgovuk @ProfEmer @SafeDavid3 @davidnabarro
Government must start to invest in clean air. To allow the mitigated spread of Covid is unsustainable.
Airborne transmission of SARS-CoV-2 is an important route of infection. Respiratory protective equipment needed. FRSM is NOT RPE. smw.ch/article/doi/sm…
Read 4 tweets

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