Discover and read the best of Twitter Threads about #contacttracing

Most recents (24)

In December @LuciaMullen17, @selenasd, Dr. Shada Rouhani, and I surveyed state/territorial health departments to update our understanding of #COVID19 contact tracing. From that survey, @selenasd wrote a great article highlighting 6 key takeaways. (1/5)…
Now, the #contacttracing survey results are also posted with interactive visuals at the JHU coronavirus resource center @JHSPH_CHS (2/5):…
In addition to the key takeaways from @selenasd, you can now explore the contact tracing data for yourself, including viewing in real time how the contact tracing workforce stacks up against the current #COVID19 incidence rate in each state/territory. (3/5)
Read 5 tweets
Many research papers as well as #RKI, Germany assert average start of symptoms for #COVID19 around 5th-6th day of infection and peak of infectiousness between 2 days before to 1 day after onset of symptoms.. 🧵1/. #2ndlevel #contacttracing #coronavirus
As thumbrule it takes 10-12 days for #lockdown to impact the spread of #COVID19, so duration between infection till confirmation is on avg. 10 days. This is reasonable as people would wait 1-2 days with symptoms, book a test appointment and get the results so 6+2+1+1=10 days 🧵2/
So if Person A gets infected with #COVID19 today, he will be reported as a confirmed case after 10 days. But he might have infected person B after 4 days. Person B might have infected person C after 4+4 = 8 days from today, or 2 days before person A is reported. 🧵3/
Read 17 tweets
1) Now learning about #GESARA and #NESARA. Starting to look like #Trump might have actually prepared the way for their implementation. A crucial step is getting nation off debt based system controlled by central banks and reclaiming control with gold-backed currency.
2) That's why I'm looking at ScoMo's much derided use of phrase "#goldstandard" in a new light. Remember that he made this comment about #NSWpol's handling of #COVID19AU back in September, saying "that is where we have to get everybody to":
3) ScoMo used phrase several times. In clip below (Dec): "NSW Govt's testing and tracing capabilities are #goldstandard not just in this country but anywhere around the world." So, local and global reference. #NESARA is USA, #GESARA is global.
Read 13 tweets
#OneYearAgo a "coronavirus #genome from a case of a respiratory disease from the #Wuhan outbreak" was published on #GenBank... 🧐#SARSCoV2
#OneYearAgo "The cluster of infections had raised fears of a potential epidemic after China said last week that the virus causing it was a previously unknown type but came from the same family of viruses that caused the #SARS and #MERS epidemics".🧐…
#OneYearAgo It was suddenly clear that the virus was travelling fast... any bell ringing?🧐#covid19…
Read 75 tweets
#Defenders @SFLCin
“One of the most notable orders included #KarnatakaHC passing an order that no service/benefit can be denied to anyone by state instrumentalities for not installing @SetuAarogya”. Here’s @AnnoyedSingh, sharing her experience on Defending #DigitalRights in 2020. Image
SFLC.IN has been representing its advisory board member @anivar in the Karnataka HC. @anivar's PIL challenges the constitutionality of @SetuAarogya and its de-facto imposition.…
#aarogyasetu #COVID19 #COVID19India
The #PIL challenges the voluntary-mandatory imposition of @SetuAarogya and the invasion of privacy rights in the absence of specific legislation governing data collection and processing by it.
#ContactTracing #app #aarogyasetu
Read 11 tweets
Our analysis reveals that the #SourceCode that has been released as the “backend code” is grossly incomplete. Though any effort at transparency needs to be lauded, much of how the @SetuAarogya operates is still opaque…
@NICMeity @GoI_MeitY
The code released on 20th November does contain code that corresponds to the #frontend of the website and the code released also contains code that lets the website interact with the application through the #webview.
#COVID19 #ContactTracing
However, some of the libraries/modules that the code depends on have not been released and very little of the released code is meant to run on the #backend.
#coders #aarogyasetu #COVID19 #FOSS
Read 8 tweets
New important thread.

Explored: Rockefeller communique on #contacttracing, Verified (UN) guide on #vaccine #communications, insights via #Vaccine Confidence Project, & a Behavioral Insights report. Today> special report from Oct 15 2020 meeting, #WHO, Technical Advisory Group.
"On 15 Oct 2020, the WHO Technical Advisory Group (TAG) on Behavioural Insights & Sciences for Health held a special meeting w/ the WHO Department of Immunization, Vaccines & Biologicals to discuss behavioural considerations in relation to COVID-19 #vaccine #acceptance & uptake."
The report was developed by members of the WHO Technical Advisory Group on Behav. Insights & Sciences for Health, chaired by Cass Sunstein, largely credited w/ developing/popularizing notion of "nudges" as policy tools.

Technical Advisory Group members:…
Read 36 tweets
We recently explored: A Rockefeller communication manual on #contacttracing, the [Share] Verified (UN/Purpose) guide on vaccine #communications, & insights from The #Vaccine Confidence Project.
Here is another from The Behavioral Insights Team - "at the heart of the #UK gov't".
Spun from the "heart of the UK gov't", The Behavioral Insights Team expanded to a global consulting firm "w/ offices around the world... Our work spanned 31 countries in the last year alone...Our growing portfolio of #BI #Ventures makes #behaviouralscience-backed tools..."
The strategic & coordinated campaigns for global vaccine roll-outs & uptake, must be understood as #advertising/ marketing. The more subtle, the more effective. Billions $$$ have been invested for one simple reason: huge returns. What we see today - has been years in the making.
Read 38 tweets
Daily Bookmarks to GAVNet 11/24/2020…
California Exodus: An online industry seizes COVID-19 to sell the Red State Dream…

#california #COVID19 #emigration
The Comparative Impact of Cash Transfers and a Psychotherapy Program on Psychological and Economic Well-being

#EconomicWellBeing #QualityOfLife #CashTransfers #psychotherapy
Read 8 tweets
Timely #ContactTracing does matter fighting #COVID19. In a new paper (➡️ we study a bizarre #Excel error in England that caused 16k cases to NOT be contact traced. We econometrically can link this blunder to ~ 120k new cases & 1.5k deaths...🧵⬇️1/N
Studying non-pharmaceutical interventions to fight #COVID19 is HARD because we hardly ever isolate specific individual policies as often many measures are taken together (lockdowns, school closures, masks,...). For #ContractTracing we also have mostly correlational evidence...2/N
Enter the English Test&Trace system hastily built on, what appears to be a set of XLS spreadsheets giving us a consequential natural experiment. On Oct 4, PHE announced that ~ 16k #COVID19 cases were not correctly reported resulting in a large jump in reported cases.. 3/N
Read 15 tweets
A note from abroad: Realizing now that I've been 5 days out of US that many folks back home don't realize how other countries might be living with the 'Rona. Here is what it was like to come to Taiwan. I think we could maybe learn a coupla things... /1 #COVID
Upon our plane touching down in TPE, we were immediately placed in two lines: one for folks with a working intl cell phone, one for the rest of us (to buy a very affordable local SIM card.) The government is then able to track us while we are in the country /2 #ContactTracing
Once through immigration and baggage, we are required to take govt-approved covid-safe cars to our quarantine hotels. (If you are a local, you can self-isolate at home.) No leaving your room (or home) for 15 days. Not for walks- nothing. /3
Read 11 tweets
Crisanti ieri è stato interpellato alla Commissione Affari e ha risposto ad alcune domande sulla seconda ondata, su come prevenire una terza ondata e sul vaccino

Qui il link completo, a seguire nel thread vi elenco i punti salienti

Perché il #ContactTracing non funziona e cosa è il #NetworkTracing

"Ognuno di noi ha un perimetro, che sono le relazioni che intrattiene.
Se una persona sta male, la persona che ha passato il virus va cercata in quel perimetro"
Con il #NetworkTracing c'è anche il vantaggio di individuare gli #asintomatici

Gli asintomatici sono circa il 50%, quindi per ogni persona malata troveremo 1 o 2 asintomatici

Dobbiamo usare la persona malata come sentinella ⚠️
Read 6 tweets
1/ Debating whether to dignify this ... but here goes

I think most of us endangered docs/nurses/respiratory therapists/social workers/hospital chaplains are also frustrated re clarity of the campaign &publicly voiced narrative re this administration’s &our nation’s response ->

The ‘it didn’t have to be this way’ - must remind the public, the on the fence voter, of the following:

Pandemic preparedness structures were pared down &not present 2help initial strategy

‘Leadership’ must b holistic/humble - it sits back &listens deeply to expertise ->
3/ if ‘leadership’ respected lifelong career pandemic preparedness experts, we would have:

accepted WHO tests for #COVID19 to apply at the outset

commissioned efforts 2create a new test 2multiple entities 4redundancy as an insurance policy, ie .... ->
Read 11 tweets
Sehr guter Hinweis (cc @corinnamilborn und @neuwirthe). (Bewusste?) Falschmeldung(en) verstellen den Blick auf die Lage bei #covid19a. Der neue #Coronavirus verlangt Medien und Öffentlichkeit einiges ab. Deshalb ein kleiner Faden aus Anlass dieses Posts. 1/n
Maßzahlen helfen uns ein Phänomen mess- und vergleichbar zu machen. Im 500 g Joghurt sind 16 g Fett, die 250 g Butter hat 217,5 g Fett. Der Hausverstand sagt: die Butter hat mehr Fett als Joghurt. Die Mathematik ist Hausverstand mit mehr Zahlen 2/n
Daher werden die Werte *standardisiert*. Einigen wir uns auf einen höheren Wert, 1 kg, und weisen wir die Fettwerte dafür aus. Das ist einfacher Dreisatz. (Statistik beruht auf einfacher Arithmetik und Algebra) Ergebnis: 1 kg Joghurt hat 32 g, 1 kg Butter 870g Fett.
Read 16 tweets
In #Berlin gibt das erste Gesundheitsamt auf: Kein systematisches #ContactTracing mehr. Das Virus ist von der Leine. Der staatliche #Kontrollverlust ist amtlich. Keine Panik, aber Grund zur Sorge und Vorsicht. #Thread
1. Die #CoronaApp wird jetzt wichtiger. Du bekommst kein Anruf mehr vom Gesundheitsamt, wenn du Kontakt zu einem Infizierten hattest. Er kann und will dich vielleicht auch nicht anrufen. Aber die App könnte dich warnen und dich und deine Lieben schützen.…
2. Viele werden aber nicht wissen, dass sie positiv sind, vielleicht auch du. AHAL-Regel ist in allen geschlossenen Räumen mit mehreren Menschen notwendig zum Schutz für dich und andere: Alltagsmaske, Händedesinfektion, Abstand, Lüften.
Read 10 tweets
Ich starte hier mal eine Überlegung zu den Schulen. Es sei hier betont, weil das geschiet hier viel zu wenig: Wir wissen noch nicht genau welche Rolle Kinder spielen. Die Forschungslage ist unklar. Ich hab keine Evidenz für meine Überlegungen,aber es is ernst
#COVID19at #Schulen
1.) Es gibt keine gesicherte Evidenz. Bedeutet, dass das wir in Bezug auf Schule einfach so tun können als spieltwn sie keine Roöle angesichts der Zahlen? Wir schicken positive Volksschüler weiter in die Klasse. Sie seien nicht infektiös. Etc. Wir tun so als wüssten wir.
Wir treffen Annahmen, und auf diesen weitreichende Entscheidungen. Wir nehmen an,dass Schüler wenig ansteckend seien, obwohl es wenig Daten dazu gibt. Wir teste nunter 10 Jährige kaum und veschlimmern diesen Zustand. Die Viruslast dürfte aber ähnlich sein.…
Read 29 tweets
A key issue to keep our eye on: CONTACT TRACING.

Half of those who test + for #COVID19 are not contacted by a health dept official.…
This defeats half the point of testing - which is meant to BOTH isolate those who are positive, AND stop chains of transmission.

If the friends, family, & close contacts of a + case aren't talked to -- they will not get tested; they will not quarantine; the disease will spread.
--Why are we failing?--

Two reasons.
Read 12 tweets
As @JPSoucy points out in this excellent 🧵, we have a experienced a considerable drop in testing. The question we don't know is: how many should we be testing? @skepticalIDdoc and other super-smart people suggest keeping our eye on %+. I am going to try to reframe the problem.
I will start off by saying this:
"cases" are numerator
"tests performed" are denominator
"% positivity" are cases/tests performed

If you do 20 surveillance tests (i.e. in asymptomatics) in a school, or 200, the % positivity will remain the same, but the "cases" will increase.
Cases matter.
They theoretically matter to the case (so they can receive treatment if they need it).
They should matter to public health to identify contacts (who may be infected) #ContactTracing
They should matter to everyone if we are treating them as surveillance.
Read 9 tweets
People are talking about *forward* and *backward* #ContactTracing #COVID19

What do they mean?

I made a case study for the @GOARN @WHO contact tracing group

A fictional contact tracer’s tale

My slides are here:…

Short thread (1/7) Forward and backward contact tracing for COVID-19, slideshow
Most #ContactTracing seeks contacts from 2 days before the infected person developed symptoms

#SARSCoV2 can be transmitted before symptoms emerge.
That is looking *forwards*

Who might the index case have infected?

Contacts in quarantine soon enough won’t infect others

Forward contact tracing can break onward transmission chains.

But it doesn’t find the source who infected the index case

To find the source, we need to go *backwards*

Index cases are more likely to have been infected by a source, who also infected others in a cluster

Read 7 tweets
DHSC's privacy notice for COVID testing has been updated to make it clear your result could be shared with police.… #covid19uk

Also PHE's #contacttracing privacy notice.…

Recent regs.…
HSJ says DHSC has agreed an MOU with police but I think that just tightens procedural compliance. #covid19uk #dataprotection

Sch 21 of the Coronavirus Act anticipated some sharing of results, even before new regs on self-isolation.…
Apparently NHS Digital is the "national data guardian" now. Has anybody told the actual National Data Guardian? #covid19uk #NHSdata #datasharing
Read 4 tweets
Enjoying listening to @latrobelaw's Tarryn Phillips & @DALupton talking about "The politics of preparing for a pandemic" - and the sociology of it, obviously. 😄
TarrynPhillips notes that alongside the literal viral contagion of #COVID19, we saw "social contagion" right back in March, exemplified in the Toilet Paper Panic Buying. TP took on a symbolic weight, representing comfort, normalcy, dignity (&, presumably hygiene!).
But there were also more significant shortages than toilet paper, too: food, medications, hand sanitiser, masks (PPE for healthcare workers).

Last week our pharmacy told us their suppliers literally had NO sterile gloves +some other basic wound care supplies available!
Read 28 tweets
Even if local areas can only focus on identifying symptomatic cases & isolate & care for them; trace & quarantine close contacts; you can eventually catch up on finding mild & asymptomatic cases because they will already be in quarantine.

This is how #ContactTracing works...
2/ This will break chains of transmission.

I described this at the @WHO Live Q&A this past Wednesday - see around min 57…
3/ Remember cases have highest viral loads (appear to be most infectious) -2 days before & up to 5-7 days after symptom onset for mild/moderate patients.

Severe/critical patients (who should be cared for in hospital) can be infectious for up to three weeks & possibly longer.
Read 5 tweets
Es ist betrüblich zu sehen, dass die Zahlen der #Covid_19 -Infektionen so ansteigen. Das müssten sie nicht! Wir könnten viel besser sein!! Thread
1)Die Eigenschaften des Virus würden eine #Extinktion möglich machen! Die Überdispersion bedeutet nämlich, dass man vor allem die Superspreader Ereignisse eindämmen muss, um das Infektionsgeschehen insgesamt einzudämmen. Das ist einfacher, als wäre κ größer, wie bei der Influenza
2)Wir wissen sehr genau, in welchen Kontexten das Virus übertragen wird! Wir müssen wegkommen von den starren Distanzregeln, da 1 Meter Abstand in vielen Situationen nicht ausreichend ist!
Read 9 tweets
🦠Why would any family attend an event to honor their loved one after @realDonaldTrump called them Losers and Suckers⁉️#SuperSpreaderEvent
🦠@FPWellman has an excellent thread on the #GoldStarFamilies event that was also a #SuperSpreaderEvent. Admiral Ray has tested positive for #COVID19. Trump blamed Hope Hicks for infecting the military...
Read 4 tweets

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