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Engineer, indoor climate researcher. Putting 👥 before 🏢 | Publications:
Dame Chris🌟🇺🇦😷 #RejoinEU #FBPE #GTTO🔶️ Profile picture Aviva Gabriel Profile picture Mong How Ooi Profile picture Georgi Mitchew Profile picture 𝓥𝓪𝓵 #NoToGBD 🇪🇸 ⚖ ❝😷≤5⃣0⃣0⃣co②≥🆒aire≈🦠🆓❞ Profile picture 5 added to My Authors
Apr 19 29 tweets 12 min read

****Why the WHO took two years to say COVID is airborne****
In short: hubris, conservative thinking, group thinking, and the group defending its own. A 🧵 on the Nature article 1/ 2. WHO categorically tweeted in March 2020, “FACT: #COVID19 is NOT airborne,” - shouting out how sure they were about the statement
Apr 11 6 tweets 2 min read
The obsession with returning to "normal" has more to do with collective inertia than any love for "normalcy".
What was so special about the normal we want to return to? And in our fetish for a return, we missed so many opportunities of making things better. A dynamic thread 🧵1/ 2/ Flushing toilets is a significant aerosol generating process. The pandemic should have opened our eyes to this. Just put the lid down when flushing, even at your own home. Even if those are your germs, do you really want them all through the home?…
Jan 27 16 tweets 4 min read
One more attempt at making a visual engagement for emphasizing the importance of better masks. This effort was led and culminated by @Its_Airborne - I am too lazy otherwise.
What started with a thread, is now interactive: This is a schema intended for two purposes -
1) To give a visual depiction of how much better respirators can be than cloth or surgical masks due to their better fit and filtration.
Dec 26, 2021 5 tweets 1 min read
On reaerosolization of stuff from surface of FFPs/N95s
(Stuff being pathogens) in hopital settings
Short thread -…
For HCWs, the sampled masks did not show presence of SARS-CoV-2 (both inside and outside).
For infected patients, virus detected almost solely on the inside.
Dec 24, 2021 4 tweets 1 min read
Let me tell you how "excess deaths" sound in everyday life:
"You know that home around the corner with a name plate of 'XX'?"
"It was named after the lady 'XX'. She passed away last month."
"Not sure. She might have had Covid some time back" "You remember your father's colleague 'YY'?"
"Yep, very well. What happened now?"
"He passed away about a week back. Heart failure."
"Ooh, that's sad."
"Oh yes, he had Covid a couple months back, recovered from that but now had a cardiac arrest."
Oct 21, 2021 16 tweets 6 min read
#Covid_19 and #Karma
Let me describe to you the concept of #Karma, as per Hindu philosophy, using Covid - 🧵 1/ 2) Karma is not as simple as "as you sow, so you reap". Karma is a lot about causality, along with chaos. Most importantly, actions have consequences.
Sep 30, 2021 5 tweets 1 min read
This is a false dichotomy.
Once you accept the possibility of aerosolized transmission/transmission by inhalation, you must strive for the highest grade of respiratory protection 1/ How to achieve that is a valid question considering we had been leaving in a droplet dogma world for long and respiratory protection has not seen as much innovation as it should have. 2/
Sep 10, 2021 11 tweets 5 min read
A quiet inclusion that #Covid19 is #airborne and trying to move on is not enough. It is okay to admit you were wrong if you want people to trust you ever again. Not doing so leads to unfair situations 1/ I am focusing on one such situation here that I shall refer to as droplet masking vs aerosol masking 2/
Sep 9, 2021 6 tweets 4 min read
A short thread explaining #airborne precautions for a #layered approach of mitigation against #COVID19
Keep in mind that multiple layers is a key need. The more layers, the lower your risk 1/ 2) Source elimination is always the first step we think of when dealing with an #airborne problem - no risk without an actual source in the space.
Again, these steps need not be perfect, but they reduce the chances of an infectious person being in the room.
Aug 17, 2021 16 tweets 5 min read
Dose makes the risk - more the inhaled dose, more the risk of infection. These are screenshots of a slide deck made with pointers from @CorsIAQ and @ayushumd
A 🧵 1/ 2) Risk of infection can be related to the inhaled dose. This helps to understand mitigation measures at a very simple and basic level. The slides were intended for high school students
Aug 10, 2021 12 tweets 4 min read
A few days back, I posted this graphic that created quite some interest and confusion too. So, trying to put it together in more than 240 characters now - 🧵 1/ Image 2) The original idea came from ACGIH, trying to stress the point that essential worker, beyond healthcare, also need better masks, better respiratory protection.… Image
Jun 30, 2021 4 tweets 1 min read
Oh, thank you for disillusioning us. I thought modern medicine already had solved the problem of immortality and all of us were just too smug to consider it 1/
The problem with statements like this is they want to reduce medicine into disease care and forget about health care. 2/
Jun 30, 2021 12 tweets 3 min read
Few days back, came across the thought that future generations will be surprised that we could manage a vaccine for a pandemic so quickly and yet could not manage equitable distribution for the vaccine. A 🧵 on potentially what else about the pandemic would surprise 1/ 2) That it took so long for public health bodies to accept the fact that a respiratory tract infection, that can be exhaled by infected individuals, can also be inhaled by vulnerable individuals.
May 23, 2021 5 tweets 1 min read
The word Swaraj is a sacred word, a Vedic word, meaning self-rule and self-restraint, and not freedom from all restraint... - M K Gandhi
"Freedom" should mean freedom to wear a mask to protect the society you are part of "Freedom" should mean the self-restraint to stay indoors if you do not need to go out
May 23, 2021 16 tweets 3 min read
I will tell you the story of an open #window which did not work, from personal experience. Short 🧵on prescriptive vs performance based guidance 1/ 2) Over the past 8-10 months, I have force-fed family members and close friends my opinion on how #COVID19 is #Airborne and so irrespective of govt. or public health bodies guidance, they are more or less aware of preventive measures that could work.
May 21, 2021 26 tweets 9 min read
The Principal Scientific Adviser, Govt. of India
@PrinSciAdvGoI came out with guidelines on mitigation yesterday. A short 🧵delving further into them 1/

2) This is not the first mention of ventilation related guidance from Govt. of India… Image
Apr 16, 2021 16 tweets 5 min read
A quick 🧵 highlighting some points from the brilliant @TheLancet article authored by @trishgreenhalgh @jljcolorado @kprather88 @zeynep @DFisman @chipatucsd 1/ 2) This will be biased since I admire and respect the authors - so that is my admission.
Apr 10, 2021 23 tweets 7 min read
Situational #Airborne is not a real thing if the so-called situations are the norm! A 🧵 of these situations, likely to contain many places or situations you too frequent 1/ 2) In a long bus journey - quite normal for many people commuting between home and work places…
Apr 8, 2021 19 tweets 4 min read
#COVID19 and a tale of two gyms in a 🧵
Gyms are high risk situations since you are exerting and breathing in a lot more than you would usually do. Everything else remaining same, a gym could be 5 times more risky than a classroom 1/ 2) Outbreak in a gym, leads to >400 cases…
Apr 2, 2021 47 tweets 17 min read
What do we mean by #UseAirbornePrecautions? There are clear guidelines in health care settings, but what do we mean by it for the public? A 🧵 of 🧵(met-thread) on this. Strap in, this will be long 1/ 2) First, this is not the first #airborne problem we have faced, and it won't be the last. And not all of them are exotic pathogens. Some could be as mundane as dust, smoke, pollens, volatile/semi-volatile organic compounds. They are all around our living space
Mar 3, 2021 37 tweets 13 min read
Twice in as many days, again a 🧵 examining a specific document. This time, I am not very impressed with the document. The document being -
"Should all healthcare workers caring for patients with COVID-19 wear FFP3?"…
2) Conflicts/Bias - I do not know the author of the document, and I am seriously biased against messy reviews of selective evidence.