Discover and read the best of Twitter Threads about #Aerosol

Most recents (24)

Wie sicher bin ich mit #Maske, wenn andere nach den anstehenden #Corona-Lockerungen keine mehr tragen? Ein Thread 1/9
Das Problem für alle, die sich schützen wollen: Masken sind nicht nur #Selbstschutz. Infizierte mit Maske verbreiten weniger Viren.
Das galt schon vor #Omikron (englisch): 2/9
journals.asm.org/doi/10.1128/ms…
Gegen Omikron schützen Masken sogar wohl noch besser als gegen frühere Corona-Varianten: 3/9
ds.mpg.de/3840722/220121…
Read 9 tweets
1/7 Relato sobre cómo se está manejando #Pandemia en estab educaciones #Escuela . Es norma definida x autoridad?, la respuesta es simple: SI. La norma es absurda? también. La norma tiene como principal fin la protección de NNA?: en mi opinión, NO. Esto recibimos esta mañana 👇 Image
2/7 Ayer entre alumnos ya se hablaba de un caso positivo, pero norma no obligaba a reporte inmediato del establecimiento. Esta mañana informan dos. Pasaron un par de horas y llega una segunda comunicación, ya son tres y se suspenden clases por una semana. #Pandemia #Escuela Image
3/7 cuál es sentido de no comunicar inmediata%? Q respaldo tiene establecer q ante 2 casos corresponde cuarentena para quienes se “sienten” a menos de 1m ?Recordemos q al ser principal forma de contagio #Aerosol en espacio cerrado se relativiza mucho distancia #Pandemia #Escuela
Read 7 tweets
#Wegfall der #Maskenpflicht am #Sitzplatz an #Schulen via @ChanasitJonas

Grundfalsch ! Das Virus wird über Aerosolpartilkel übertragen, zu MV: bit.ly/3s6CgP2

Aerosol FAQ bit.ly/34yR9km
AAF Stellungnahme bit.ly/3mHGy9En

#Covidisairborne (1/n) Image
Die Grafik kommt von Rechnungen von @KriegelMartin , aufbereitet vom ZDF = bit.ly/34yR9km (2/n)
Mehr "Aerosol" Stellungnahmen
@G_Ae_F : bit.ly/3uAJpq1 (3/n)
Read 8 tweets
I got home this morning after an overnight shift in the pediatric emergency department.

I rarely share personal reflections based on my clinical work as a #pediatrician via @twitter, but I'm allowing myself this exception.

#omicron #COVID19Qc #N95sForAll

A thread 🧵 1/21...
2/ I started my winter holiday stretch of shifts by working on #Christmas evening and finished it by ringing in the #NewYear last night while taking care of sick & injured children with a phenomenal (but overworked & somewhat demoralized team) at the children's hospital.
3/ Let me re-iterate at the outset that I've always been opposed to @francoislegault @coalitionavenir's imposition of the #curfew because of its harmful impacts on many of the most marginalized people in society.
cbc.ca/news/canada/mo…
Read 22 tweets
A 🧵 about my experience on aerosol research and airborne transmission of infectious diseases during my Ph.D. time, the academic struggles and challenges I faced pre-Covid and when it just emerged to proof that #COVIDisAirborne (1/13)
I started studying aerosols and infection control of aerosols at the Academic Center of Dentistry Amsterdam- ACTA (Dental Faculty of University of Amsterdam) in december 2015. Nobody back then cared about aerosols, but we did. (article in dutch) ntvt.nl/actueel/actuee…
In March 2019 I worked with @WCMQatar - team of Prof. Abu-Raddad- where we used the Wells-Riley equation adjusted by Rudnick & Milton with the aim to estimate transmission risk and effect of measures that apply to dental professionals. journals.sagepub.com/doi/full/10.11…
Read 14 tweets
1/ #SARSCoV2 leviää #Aerosol viruspartikkelien avulla joita uloshengittää tartunnansaanut. Haluat välttää näiden partikkeleiden sisäänhengitystä (🦠partikkelimäärä⬇️). #Vuosikymmenien_tutkimus kertoo seuraavien keinojen laskevan sisäänhengittämiesi aerosolpartikkeleiden määrää:
2/ #Maskit: mitä korkeampi laatu ja mitä parempi istuvuus kasvoilla, sitä vähemmän sisäänhengität itse aerosolpartikkeleita joita tartunnansaanut uloshengittää yhteiseen hengitysilmaanne. Tämä ei ole rakettitiedettä.

Aerosol voi ilmaleijailla tunteja.

pnas.org/content/118/4/…
3/ #Ilmastointi: Mitä tehokkaampi ilmastointi ja #Tuuletus, sitä vähemmän ilmassa on aerosolpartikkeleita joita tartunnansaanut/-neet hengittävät yhteiseen, jaettuun sisäilmaanne. Näin sisäänhengität viruspartikkeleita itse vähemmän. Tämä ei ole rakettitiedettä, vaan simppeliä.
Read 8 tweets
Super excited to participate, Scott. Just a few clarifying questions in the Tweets below, before we start:
1. Am I a person of color, descended from a subject in the Tuskegee Syphilis Study?
theatlantic.com/politics/archi…
2. Am I one of the largely black socialist union worker in Guadalupe striking to protest health-worker mandates because we're far-right, white supremacist, addled anti-vaxxers?
aljazeera.com/news/2021/11/2…
Read 8 tweets
@elivito @ANirospe @AurelianoStingi Premessa: #Long Covid è un problema molto grave (👉@LongCovidItalia),che interessa anche i bambini (👉 @LongCovidKids);in generale,le conoscenze accumulate su questo nuovo virus stanno facendo emerge un quadro inquietante rispetto ai danni che esso può arrecare a diversi organi->
@elivito @ANirospe @AurelianoStingi @LongCovidItalia @LongCovidKids compreso il cervello, con danni a lungo termine ancora ovviamente non chiari, ma con potenziali scenari che destano molta preoccupazione (cfr @stefaniaconti). Già questo è motivo più che sufficiente per vaccinarsi!

@elivito @ANirospe @AurelianoStingi @LongCovidItalia @LongCovidKids @stefaniaconti Però credo che il problema che qui si vuole evidenziare è un altro, e riguarda la comunicazione veicolata dai media mainstream durante la pandemia.
A me pare che essa rientri appieno nella categoria della "propaganda" più che dell'informazione
Read 13 tweets
I'm excited to share with you our recent @biorxivpreprint where we demonstrate that @vaxart mucosal Ad5 #SARSCoV2 vaccines not only protected against disease but also reduced transmission after post-#vaccination #SARSCoV2 infection in a hamster model. biorxiv.org/content/10.110… A🧵/
If you follow me, you are well aware of my obsession w/ #mucosalimmunity.😂Protection generated at mucosal surfaces is at the crux of one of the biggest questions we need to answer during this unique phase of the #pandemic - How do we decrease #SARSCoV2 #transmission to others.
Considering most of the world is unimmunized (including most kids <12), the possibility that a vaccinated individual with a post-vaccination infection (aka #breakthrough) can spread #SARSCoV2 is a public health risk. We need #transmissionblocking strategies.
Read 19 tweets
@prof_nch (1/?) Profs thinking it’s ok to exercise privilege & unmask to teach in indoor classroom of students who must attend or possibly fail class—either have COMPLETELY NO understanding that 1)#aerosol is main transmission route for #COVID19; 2) how aerosol transmission actually works;
@prof_nch (2/?) 3) #Delta is hypertransmissible with rate of 1 infecting on avg 5-7 more vs earlier strains 2-3 more; 4) most infected don’t know they’re infected when they are at their most infectious because symptoms only show after peak infectiousness—if ppl not asymptomatic; …
@prof_nch (3/?) most have no real functional understanding of indoor air quality in own classrooms & rely solely on air system filtration—don’t monitor it with CO2 meters, keep windows/doors open; 4) don’t think about minimal acceptable air quality vs ‘good/excellent’ by #ASHRAE standard;
Read 12 tweets
wow, auf @ORFImZentrum ein Schüler, der Klartext spricht (ans Bildungsministerium): "Sie können sich loben, so viel Sie wollen, aber die Massnahmen kommen bei uns nicht an. Die Verantwortung an uns ab schieben, weil wir die Infektionen von aussen in die Schulen tragen, ist
1/n
einem Bildungsministerium nach 1.5 Jahren Pandemie nicht würdig." Grosses Kino - mehr solcher Schüler auch in @srfnews
Nicht nur #ElternGeschichtenCH, sondern auch #GeschichtenAusDerSchuleCH (aka #SchülerInnenGeschichten)
2/n
Auch @rendiwagner :"Schülerinnen und Schüler, Lehrerinnen und Lehrer, Eltern - fühlen sich im Stich gelassen." In A 🇦🇹 haben 7500 Eltern haben ihre Kinder abgemeldet. Nur zu einem Schluss kommen: "Das ist Management by Chaos."
3/n
Read 37 tweets
[Thread] Workplaces & #Covid19

😷 Many people WFH are concerned about risks in offices, schools, colleges & other buildings

🏢Workplace safety is regulated in EU (& other places). Virus is a biological agent & that requires precautions @EU_OSHA 1/
osha.europa.eu/en/themes/covi…
‘identification & assessment of risks is starting point for managing occupational safety & health.. Employers are obliged to revise risk assessment when there is change, to consider all risks, including affecting mental health..& to make an action plan’ 2/ oshwiki.eu/wiki/COVID-19:…
In Ireland, workplace safety is the responsibility of the Health & Safety Authority @TheHSA hsa.ie/eng/

#Covid19 resources here: hsa.ie/eng/topics/cov… 3/
Read 17 tweets
Live: International dream team of air quality experts talking about how we're not doing enough to prevent #delta transmission in schools
Worst-case scenario: Children's hospitals overloaded with 1/3th the beds needed, and 1/5th the PICU beds needed
Delta primarily spreads through #aerosol inhalation. The 6-ft rule is insufficient. The 15-min rule is insufficient. If someone must eat indoors, they should not talk. The infectious person does not have to be in the room at the same time as you
Read 24 tweets
This interview with @mtosterholm is 🔥. One of the clearest & most succinctly accurate 6-min summaries of where we are with Delta/COVID mitigation, masks, & vax (best part starts at 1:30).

#VaxUp #BetterMasks #N95 #MasksInSchools
A few quotes below. h/t @PPEtoheros, @citlanx
"This virus is an #aerosol. It’s transmitted in the air, just like we see with cigarette smoke. If you’re in a room and you have a covering on your face and you can smell* the smoke, then you know you’re also getting virus in there if in fact you had an infected person in there."
* (Editorial comment on the smoke smell comment. Aerosols in smoke come out as a concentrated plume, waft through the air, & build-up indoors. But the smell is from the gases & can go through masks, whereas aerosols are blocked. Good visual analogy, but it breaks down at smell).
Read 7 tweets
1/ Our paper is now published in final peer-reviewed form in CID! In this study, we recruited 22 #COVID19 patients at NCID and collected breath samples using a G-II machine while they were talking, breathing, and singing.
@IDSAInfo @drkristenkc @Don_Milton
doi.org/10.1093/cid/ci…
2/ 13 (59%) of patients had detectable #SARSCoV2 RNA by PCR in exhaled breath samples, with 85% comprising fine aerosols <5um. There was significant variation between patients, with 2 patients accounting for 52% of the total viral load - may explain so-called "super-emitters".
3/ Detectable RNA in aerosol was associated with earlier day of illness: median 3d (IQR 2-5) for those with detectable RNA vs 5d (4-7) for those without. It is clear that patients are most infectious at illness onset, emphasising need for early case detection and isolation.
Read 7 tweets
Why it is important to equip day-care centres and #schools with mobile #air #filters: #Aerosol researchers launch position paper!

The scandal about the still insufficient equipment of day-care centres and #schools with #mobile #air #filters suggests that…
@realBertBlocken
1/x
decision-makers in the ministries and administrations have still not understood how infections with the #coronavirus occur. The Deutsche Forschungsgemeinschaft (#DFG, German Research Foundation) is now countering this
2/x
with an information paper that explains the correlations in simple terms.
It clearly states that it is ⚠️#negligent to rely solely on window ventilation in educational institutions.⚠️
3/x
Read 31 tweets
A metal ion orients SARS-CoV-2 mRNA to ensure accurate 2′-O methylation of its first nucleotide
» doi.org/10.1038/s41467…
The #SARSCoV2 #coronavirus is able to utilize the changes in metal ion concentrations to disguise itself in the human host body thus evading immune responses. Image
Efficacy of #clarithromycin on #COVID19 pneumonia without oxygen administration; protocol for multicenter, open-label, randomized-controlled, 3-armed parallel group comparison, exploratory trial #CAMECOVID
» doi.org/10.1101/2021.0…
Japan Registry of Clinical Trials jRCTs071210011 Image
The influence of #HLA genotype on the severity of #COVID19 infection
» doi.org/10.1111/tan.14…
A genetic link has been discovered explaining why some people catch #Covid but don't get sick. The gene is found three times as often in people who are #asymptomatic. Image
Read 199 tweets
Logik: Die indische Mutante #Delta (#B16172) breitet sich massiv in #England aus und da sollte man erwarten, dass das #RKI sofort die unzureichende #Einreisequarantäne verbessert - aber nein - das RKI stuft die #COVID-Gefahrenlage für Deutschland herunter
Hallo Dr. #KaiSchulze, ist für das @rki_de der Ausbruch der indischen Mutante #B16172 in #England isoliert? Kann #Delta nicht durch die löchrige #Einreisequarantäne nach DE eingeschleppt werden? Wie kann man jetzt die COVID-#Risikobewertung herabstufen?
Strategie #Herdenimmunität
Todesfälle wurden offenbar einkalkuliert. #Brasilien sollte durch natürliche Infektionen zur Herdenimmunität geführt werde. Das bedeutet mit 1% IFR, 70% Herdenschwelle >1,4 Millionen einkalkulierte Todesfälle #Bolsonaro #COVIDZID nytimes.com/2021/05/27/opi…
Read 31 tweets
#BC ought to be grateful for work of @PennyDaflos asking hard questions & keeping officials accountable to truth & science during #COVID19 👉👉bc.ctvnews.ca/international-…
#DrBHenry gaslit #BC that she would ‘follow the science’: “Responses from British Columbia officials are part of a damning analysis on the reluctance by public health to acknowledge the airborne transmission of #COVID19 despite scientific consensus on the matter.”
#DrBHenry @adriandix & #BC #PHO ongoing refusal to recognize the primary transmission route of #COVID19 by #aerosol mechanism surely hobbled #BC response—to what extent & cost —ultimately in lives lost, #longCOVID, trauma, suicides, etc. have yet to be determined
Read 5 tweets
🔝5 Concerns about #SARSCoV2 #Biology: A Call to Pause, Deliberate, and Revise Policy─This review is intended both as a basic resource and to initiate an open and critical dialog about SARS-CoV-2 biology for an independent and public call to action. jjcouey.medium.com/5-concerns-abo…
Structural basis of ribosomal #frameshifting during translation of the #SARSCoV2 #RNA #genome
» doi.org/10.1126/scienc…
A unique feature of the SARS-CoV-2 genome controls protein synthesis and presents an "Achilles heel" of the virus. Image
Brainstem neuropathology in two cases of #COVID19: #SARSCoV2 trafficking between #brain and #lung
» doi.org/10.1007/s00415…
Neuropathologic evidence strongly suggests that the pathophysiology of COVID-19 related respiratory failure includes a neurogenic component. Image
Read 213 tweets
ICYMI: Resource page on COVID transmission & prevention (focus on airborne aerosol spread) is up to:
☑️580+ media articles
☑️285+ science articles
☑️tons of videos; infographics; webinars; tweet threads; reports & tools
☑️scientists to follow
☑️more (1/x)
bit.ly/3fzmB16
(2/) If you are looking to learn about #COVID transmission & prevention, this curated page is a long & growing set of educ. resources, w/ focus on inhalable #aerosol, #airborne spread.

Lots on aerosol basics, new science, #masks, #ventilation, #COVIDCO2+
docs.google.com/spreadsheets/d…
(3/) The COVID page is not meant to be 100% comprehensive (one-person effort; be gracious), but a broad & freely available source for practical & important info.

As always - feel free to send any important articles I've omitted or other suggestions. 🙏
docs.google.com/spreadsheets/d…
Read 3 tweets
Dovremmo pensare ai sistemi di #trasporti. Sono gli assembramenti che diffondono il #SARSCoV2 e anche gli asintomatici con un'alta carica virale trasmettono via #aerosol in condizione di super diffusione.

N.B. Al 1° picco venivano testati solo sintomatici
Read 4 tweets
Partial good news out of @CDCgov today. cdc.gov/coronavirus/20…
Recognition that fomites are a minor route, and stop the #hygienetheatre . Also good, and pathbreaking that they cite #QMRA studies in support. 1/N
Interesting that they use a 1/10,000 from a surface contact as being indicative of low risk from fomites (many of us have seen that number before). But, still some problems in this updated science brief. 2/N
Opening sentence: "The principal mode by which people are infected with SARS-CoV-2 (the virus that causes COVID-19) is through exposure to respiratory droplets carrying infectious virus." While they don't use the word #aerosol in the body 3/N
Read 5 tweets

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