Discover and read the best of Twitter Threads about #transmission

Most recents (24)

🌬️ Windy 🌬️

From our review of the literature, it is clear that enhancing the ventilation, whether through INCREASING the VENTILATION RATE or MODIFYING the AIRFLOW pattern is an effective way to REDUCE AIRBORNE VIRAL INFECTION risk.>
...enhancing ventilation across an entire building might not be feasible due to economic or HVAC system limitations...suggests PAYING CLOSE ATTENTION to SPACES where the OCCUPANTS are ENGAGED in HIGH EXPIRATORY ACTIVITIES such as singing, speaking loudly, or heavy exercising.>
If mechanical ventilation is not available or is insufficient, NATURAL VENTILATION through opening windows and doors should be utilized.
Harrichandra et al studied 12 nail salons in New York City and determined that the RISK WAS LOWEST in the nail salon with the HIGHEST>
Read 7 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.… 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
The #COVID19 #vaccines are designed to prevent disease—they are also incredibly effective at preventing #transmission! Here we discuss the immunological mechs that cause vaccines to tangibly and effectively reduce transmission! 🧵 1/n… @TheLancetInfDis
Humbled to have put together a review on the COVID19 vaccines’ ability to reduce transmission with my fellow med skool classmates from @SpikeSupport- @CarolineNValdez, @Larson_HaleighT, @ChaneyKalinich, and mentored by the amazing @VirusesImmunity 2/n
We note four stages by which vaccine-induced immunity can ⬇️ transmission: 1️⃣ infection, 2️⃣ viral replication, 3️⃣ threshold for host-to-host spread, and 4️⃣ degree of symptomaticity 3/n
Read 36 tweets
NEW REPORT w/ @cleanaircatf: To manage climate change, the U.S. must double or triple the size of its electric transmission system - and the current piecemeal approach isn’t going to cut it.

We’ve got 2 proposals to scale transmission rapidly:…
To make progress, the U.S. must address the tension between private and public interest. It will also need to find inclusive ways to plan and develop transmission in the national interest that gets buy-in by ensuring broad enough benefits as well as compensation for burdens.
#Transmission building today is a fragmented “3 P” system:


This is scattered over dozens of federal / state / local authorities. The result? A lengthy process subject to multiple vetoes.
Read 10 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…
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
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.⚠️
Read 31 tweets
How well are the current #Covid vaccines performing?

In all fairness, we can say they are offering high protection against severe disease & deaths; considerable protection against the symptomatic disease; but only modest protection ag. infections/transmission of the disease 1/
To put it another way, the vaccines are contributing little to our fight against the frequent surges of the #SARSCoV2 virus.

This leads to one pertinent question:

What ought to be the prime objective of the vaccination particularly amid an intense pandemic? 2/
To resist the ongoing outbreak or avoid hospitalizations and deaths?

A four-fold reduction in the hospitalisation & death rates is not much use if we just allow infections to reach four-fold the previous peak. 3/
Read 32 tweets
1/5 Which #TravelRestrictions were most effective to contain the spread of #COVID19?🌍New systematic review out now in the Journal of Infection (pre-proof):


@rki_de @CBcheraoui @Elie__Akl @SPARK_AUB @biainfection

2/5 In 2020, most countries switched from total to targeted #border closures followed by mandatory #quarantine and #screening of #travelers.
3/5 Evidence suggests: border closures may reduce the number of #COVID19 cases, disrupt disease spread across countries/between regions & slow #outbreak progression.

Early implementation, in combination with measures to reduce #transmission rates, likely enhances these effects.
Read 5 tweets
If millions fewer young people are doing twice-weekly #tests then obviously those numbers will go down.

And that children are no longer #mixing regularly will have significantly reduced #transmission amongst their own and other age groups, i.e. family members.

I'm not sure...
...this is 'news', though it's another failure of (public health) comms if folks are being left confused.

More concerning, however, is the implication the #models - which one assumes were those used to predict the effects of re-opening schools - either didn't or couldn't cope...
...with this entirely #predictable event, and that they will somehow not be able to handle winter #predictions even after young people go back to school in the autumn, and testing resumes 🤔

If 18 months into the pandemic, Government is still just 'driving by #dashboard' then...
Read 4 tweets
Here's the thing, a short 🧵: yes siting is hard but it gets done for RTO-planned or state-procured Tx. Merchant crossing various states are fought - and they can threaten incumbent gen / utility business revenue; a lot of $0 MW renewable may not be great for the existing 🏭 1/8
So let's separate out the types of Tx: planning process intra-regional reliability Tx (gets sited but might take 5-9 yrs), state policy RFP Tx (seems similar, but can fail for bad design and utility competitor opposition in court and PUCs and funding community groups even) 2/8
Interregional #planning process Tx: not really happening, leaving a vaccum for merchant interregional Tx (again opposed by $$ interests on top of difficult to fund). There's not much to run into state siting from RTOs or Non-RTO NERC Tx planning entities working together 3/8
Read 8 tweets
Work session at the @PUCTX on rolling outages, load shedding, and transmission starting momentarily. I'll tweet some of the major takeaways here.
You can watch here:…
Speaker slides here…
Agenda below
#txlege #txenergy #energytwitter Image
@AEPTexas said they had 11 critical load customers before the storm in Feb, 171 now. 160 facilities didn't fill out a 2 page form pre-Feb. Wow.

This adds new detail to this from @byjayroot @jblackmanChron @Dexinvestigates #txlege…
@TNMP had 2 gas facilities registered as critical infrastructure before the storm. Now has 177. This really is stunning. They're a small player but have a significant Permian footprint.
#txlege #txenergy #TexasBlackouts Image
Read 12 tweets
1/8 Das Hauptargument der #Impfzwang-Befürworter, eine #Covid_19-#Impfung schütze auch Andere, steht, da keine #sterileImmunität erzeugt wird, im krassen Konflikt zur Massnahmen-auslösenden These v.@C_Drosten, @CiesekSandra & Co., asymptom. Infizierte, wären das eigentl. Problem.
2/8 Mit der Behauptung, Asymptomatische /Präsymptomatische trügen entscheidend zum #Infektionsgeschehen bei, wurden #Maskenpflicht, #Massentests, #Kontaktnachverfolgung, und #Quarantäne für Kontaktpersonen u.a. begründet.
3/8 Geht man also von den Verlautbahrungen (#Geimpfte haben max. nur noch leichten Verläufe) und aktuellen Fakten (auch Geimpfte können sich infizieren) aus, so werden mit der #Impfung, zahlreiche zusätzliche Asymptomatische Fälle geschaffen.
Read 8 tweets
My take on @ivanlpenn's & @ckrausss's @nytimes:…
TL;DR: #transmission (trX) vs. rooftop #PV (rPV) dilemma = unfounded, poorly scoped article, misrepresented study, romanticized rPV, pessimistic trX, obsolete #energy policy references & more! -1/n
First of all, rPV & trX are largely UNRELATED. rPV increase energy #efficiency & (might) offer #energy #resilience . trX reduces energy costs, increases #reliability & expands access to electricity market for all. -2/n
An important aspect is that rPV comes mostly at personal high upfront costs, while trX investments are "socialized". I.e. rPV is not for everyone, while trX is driven by broader energy concerns of wide social impact. Here is the article's first miss!.. 👇 -3/n
Read 13 tweets
It's been a busy few days/weeks/months modelling steps 2, 3 and 4 of the #roadmap out of lockdown in England, with my #ateam @_nickdavies @markjit and John Edmunds. A 🧵 on our latest work looking at #step4 🪜👩‍💻 and a #photodump of some nice things I saw along the way A photograph of the West pier and Brighton beach with low ti
We project the dynamics of #SARSCoV2 transmission in England using an #agestructured #transmission #model which divides the population into vaccine states and disease states. The model has compartments for three #COVID19 variants (OG, #alpha and #delta) and 2 two-dose vaccines 💉 An illustration of the age-structured compartmental transmis
To capture changes in behaviour (➡️ the amount people mix in the model), we use historic #mobilitydata and make assumptions about what might happen to mobility when policies are implemented, e.g. #step4 🍀 We make low, medium and high assumptions to account for uncertainty... ⭐️ Figures showing google mobility data between January 2020 an
Read 11 tweets
@AnooseBallzy @NotAlexSheppard It was either face a Sam_son option that would've wiped us all out, or let those who choose, of their own free will become victims of the Cabal. No easy choices here. The M.I is trying to keep casualties down but we are all watching you all self destruct. 💔 Delicate chess moves
@AnooseBallzy @NotAlexSheppard There is an option that has not yet come out. Trump visited their factory 26 times. We are hoping against hope they have an actual solution for those who just damaged their bodies with these other jabs. Time will tell.
@AnooseBallzy @NotAlexSheppard Here comes our THEORY.. the human body doesn't have the switch needed for their weapon.. until we are injected with it
Read 25 tweets
Generally speaking #infrastructure is defined as the basic #physical systems of any #business, #region, or that of any #nation... including #transportation systems, #communication #networks, #sewage, #water supply & #electrical #grid systems. #BuildBackBetter #logistics #stimulus
Various types of #infrastructure #construction based projects typically drive the bulk of conversations amongst those of us vested in the arduous process of "progress" moving forward.
#Highway improvement, #street & #road maintenance & #bridge building commonly take center stage.
Mass #transit, #airport & #airways, #municipal #WaterSupply, #waste management along with waste #Water #management,
#power generation & #transmission, #HazardousWaste removal & #storage ALL must be considered while addressing basic underlying societal frameworks. #sustainability
Read 7 tweets
Infektionsgefahr in #Schulen über belastete #Aerosole
Professor #Kähler schließt sich der #AITAsk Bewertung an:
"#Lüften alleine reicht nicht. Die Schulen wurden ja lange zugemacht, weil es eben nicht reicht". #twlz #kmk #rki…
Schulen sind mittlerweile wieder geöffnet, weitere Jahrgänge sollen folgen, dabei steigen bundesweit die Infektionszahlen. Gleichzeitig breitet sich die Mutante #B117 weiter aus. #Schulen sollen "eher" keine Pandemie-Treiber und dank #AHA+L sicher sein, sagt das #RKI. Stimmt das?
Eine erste Warnung, was ein #Superspreader im #Klassenzimmer bewirken kann und warum #Schulen sehr schnell zu einem Pandemie-Treiber werden können, zeigte das Ergebnis der #AITask-#Modellierung bereits im August 2020: Superspreader Klassenzimmer #twlz #kmk
Read 135 tweets
1/ Q: Can I go back to my indoor #fitness classes? 🚴‍♀️

A: The #NerdyGirls LOVE your efforts to stay fit 💪, but best to hang on to those online or outdoor workouts a bit longer.

TL;DR: Heavy breathing, no masks, and indoors is the perfect recipe for #SARSCoV2 #transmission.
2/ A recent U.S. @CDCgov report described an #outbreak linked to an unnamed fitness facility in #Chicago in which *55 out of 81* attendees of an indoor high-intensity fitness class in Chicago were infected over the course of a week in August 2020.
3/ ❓What precautions were being taken?

➡️ The classes were at <25% capacity, with masks 😷, temperature & symptom checks required at entry. 🤒 Exercise mats were spaced 6 feet/2 meters apart. ↔️
Read 13 tweets
Reducing #COVID19 #Airborne #Transmission Risks on #PublicTransportation Buses
Wearing of #facemasks reduced the overall particle count released into the bus by an average of 50%, the dispersion distance by several feet and #aerosol particles by 84.36%. Image
🔝#SARSCoV2 Infects Human Engineered Heart Tissues and Models COVID-19 Myocarditis
#COVID19 can kill heart muscle cells, interfere with contraction. Details of how #coronavirus infects #heart: models of tissue damage may help develop potential therapies. Image
High-content screening of coronavirus genes for innate immune suppression reveals enhanced potency of SARS-CoV-2 proteins
196 protein products of seven coronaviruses: the genes encoded by #SARSCoV2 are generally more potent immune suppressors than others Image
Read 236 tweets
⚠️#Ocular #MRI Findings in Patients with Severe #COVID19: A Retrospective Multicenter Observational Study
All patients had nodules in the macular region, 8/9 (89%) had bilateral nodules, 2/9 (22%) had nodules outside the macular region. Screening needed. Image
⚠️🔝New-Onset #IgG #Autoantibodies in Hospitalized Patients with #COVID19
An international team of researchers studying COVID-19 has made a startling and pivotal discovery: The virus appears to cause the body to make weapons to attack its own tissues. Image
⚠️🔝Patterns of myocardial injury in recovered troponin-positive COVID-19 patients assessed by cardiovascular magnetic resonance
Damage to the heart found in more than half of #COVID19 patients discharged from hospital who show raised levels of troponin. Image
Read 235 tweets
How #Covid19 #vaccination rollout will change #TestAndTrace, and worsen inequalities in #transmission and outcomes? Let's act now.
New blog… @BSMSMedSchool Coronavirus - a three year old artist's impression
I talked about it here at the @bmj_latest #covidunknowns webinar - again using #Swale as example
Read 3 tweets
Bilancio di un anno su Twitter, reso possibile grazie a Paolo Barnard. Abbiamo contribuito a sollevare ragionevoli dubbi, nel bene e nel male, facendo chiarezza su:

✔️Wuhan WIV…
✔️Vaccini… Image
In Italia non ci dicono se è possibile o meno contrarre il CoV2 dal semplice respiro di un portatore sano CHE RIMANE a galleggiare nell'aria ANCHE DOPO il suo passaggio, e persino viaggia a distanza. Fatti per POTER PREVENIRE.
Il New York Times ha pubblicato, 7 giorni dopo il mio video sugli #aerosol infettivi, una conferma di ciò che dissi perché ora lo dice anche il CDC del governo americano. No panico, MA PRENDERE LE PRECAUZIONI.
Read 51 tweets

Tony's STILL banging on about #IDcards, nearly 20yrs later - 'cos make no mistake, that's what #VaccinePassports will become.

Just as WWII's [left 👇] became @10DowningStreet/@ukhomeoffice's [right 👇] with a centralised #biometric #NationalIdentityRegister behind it... ImageImage will #YellowCards [left 👇] morph into 'just an #app on your #phone' [right 👇] - claimed to be 'not #mandatory', of course (unless you want to live your life, work or travel...) and with the centralised #biometric #registration Government has wanted all along. ImageImage
So here's a few questions the #HealthPassport headbangers must answer:

1a) When Heathrow re-opens, given (current) #vaccines don't prevent #transmission, aren't people still going to have to be #tested?

1b) If people have to be tested anyway, what's the point of the 'passport'?
Read 6 tweets

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