Tracy Casavant Oh, BASc (Chml), MES @OhCasavant
Always do the right thing, even if it's the hard thing. #COVIDisAirborne. #SafeSchools. #CircularEconomy #BioEconomy - intersections where I can find them! Canada Joined May 2021-
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I wonder how many children the incompetence of our public health and infection control leaders has disabled in Canada? Insisting COVID isn't serious, doesn't spread in schools, spreading misinformation, ignorantly yet confidently denying the protection provided by respirators.
I wonder how many children the incompetence of our public health and infection control leaders has disabled in Canada? Insisting COVID isn't serious, doesn't spread in schools, spreading misinformation, ignorantly yet confidently denying the protection provided by respirators.
Ventilation/HEPA filtration is to prevent long range transmission of COVID, and extreme concentrations of infectious aerosol for the most part. You definitely need a properly fitted respirator at conversation distance… and personally I wear one whenever I am in a building that…
This is super interesting and useful inquiry! Not only does CO2 provide a measure of rebreathed fraction & a proxy for fresh air intake, it’s also a measure of air pH which directly impacts viral decay.
This is super interesting and useful inquiry! Not only does CO2 provide a measure of rebreathed fraction & a proxy for fresh air intake, it’s also a measure of air pH which directly impacts viral decay.
@TahirihWalsh Ideas: 🔸Sharon Roberts, Orlagh O’Kelly 🔹 robertsokelly.com 🔹Great work ->C^v1d issues❗️ 🔸Joel Rochon @RochonGenovaLLP -LTC class-action 🔸@jmcrookston @UbakaOgbogu 🔸May have recs: @drDavidKeegan @OhCasavant @DickZoutman @PPEtoheros @HallwayOrchard @PoPNB_kindness
Incredible research at intersection of environmental chem, #ClimateCrisis, #COVID19 #pandemic, #healthybuildings. Poor ventilation not only ⬆️[infectious aerosols] but it can keep them infectious longer! And ... increase in ambient CO2 from climate change does so as well 😲
Incredible research at intersection of environmental chem, #ClimateCrisis, #COVID19 #pandemic, #healthybuildings. Poor ventilation not only ⬆️[infectious aerosols] but it can keep them infectious longer! And ... increase in ambient CO2 from climate change does so as well 😲
The amazing @YaleSPH #COVID and the immune system education info from @VirusesImmunity is on LinkedIn! Share there if you can so we can expand awareness outside the Twitter bubble! #ViralPersistence #LongCOVID #Immunology #PublicHealth linkedin.com/posts/yalesph_…
@Comm_in_Care @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @OhCasavant @TheWHN @LaSeletzky This class action has now been certified to proceed. And the appeal to stop the class action against the a government of Ontario was lost. Both class actions are going ahead. cbc.ca/news/canada/to…
@AltenbergLee The head of the Canadian immunology society said even recently that since Omicron, infection immunity is the plan. x.com/OhCasavant/sta…
@AltenbergLee The head of the Canadian immunology society said even recently that since Omicron, infection immunity is the plan. x.com/OhCasavant/sta…
Chemicals also travel "through the air" And may be "inhaled" But they're not called "Chemical Respiratory Particles / Vapours" No one objects to calling them "airborne" 🤔 PS - this story is also a brutally sad story of preventable harm 👇 😢 globalnews.ca/news/10430626/…
@nb_covid_info @OhCasavant @RetractionWatch This sucks. There's so much more that needs our energies right now. But that's how the bad guys win. This time around, we can't afford to let up when we're ahead. It's time to clean house, and end tolerance for bullying and toxicity in medicine. Do that, and the rest will come.
@nb_covid_info @OhCasavant @RetractionWatch ...in a very real sense with COVID we're paying the price for letting medical culture get the way it is. Looking back to Campbell, and Krever and beyond we had the information, but we took our eyes off the ball, and let the bad guys keep on keeping on.
@nb_covid_info @OhCasavant @RetractionWatch ...and there's this idea that "doctors will be doctors", so we kind of abandon the people at the bottom of the heap, and let the bad ones run wild (because we know it'll be a fight, and we've got other things to worry about). The "Thin White Line" mentality doesn't help, but...
@nb_covid_info @OhCasavant @RetractionWatch So I don't think we can fix what's wrong with EBM inside EBM. It's going to take fixing a feudal medical culture that goes back to Semmelweis and before. That will take higher standards inside the profession (especially at the top), but probably also external oversight.
@nb_covid_info @OhCasavant @RetractionWatch It's that intersection between overconfidence and lack of understanding that's the problem. TBH most of science is realizing you don't understand things as well as you thought you did. Look at the Great WHO Airborne Debacle - basically just overconfidence + ignorance. If only.
20/ Responses to some comments below this point: For COVID-19 is dominantly airborne Direct deposition not demonstrated for any disease. I think unimportant, only if someone coughs in your face Surface was long exaggerated, due to not understanding air x.com/prasadkasibhat…
20/ Responses to some comments below this point: For COVID-19 is dominantly airborne Direct deposition not demonstrated for any disease. I think unimportant, only if someone coughs in your face Surface was long exaggerated, due to not understanding air x.com/prasadkasibhat…
@carlzimmer @nytimes @WHO 14/ Now, the more important decision is WHAT DO WE DO WITH THIS? WHEN should we use protections for airborne inhalation, such as N95/FFP2 respirators, enhanced ventilation / filtration, CO2 meters etc? The @WHO report explicitly says that they do NOT take a position on that
@carlzimmer @nytimes 12/ A pearl on that article: a medical expert complaining that the old terminology was nice because it was simple to apply EVEN IF IT WAS WRONG [Even it people in hospitals got sick and died because of the wrong protections -- OMG!] Not that uncommon... nytimes.com/2024/04/18/hea…
@WHO 5/ The old terminology had arisen in a period (~1920-2020) of extreme skepticism about the importance of airborne transmission. We explained that in our peer-reviewed paper in the history, summarized in my pinned Twitter thread: x.com/jljcolorado/st…
@WHO 5/ The old terminology had arisen in a period (~1920-2020) of extreme skepticism about the importance of airborne transmission. We explained that in our peer-reviewed paper in the history, summarized in my pinned Twitter thread: x.com/jljcolorado/st…
Amanda Hu @amandalhu
29K Followers 2K Following An artist who likes talking about clean air. Not a doctor/engineer/scientist. She/her. Profile pic: @stwatson2 Banner: @calgaryhester𝙹𝚘𝚎 𝚅𝚒.. @jvipondmd
53K Followers 2K Following 𝙼𝙳 𝚝𝚛𝚢𝚒𝚗𝚐 𝚍𝚎𝚜𝚙𝚎𝚛𝚊𝚝𝚎𝚕𝚢 𝚝𝚘 𝚜𝚊𝚟𝚎 𝚑𝚒𝚜 𝚌𝚑𝚒𝚕𝚍𝚛𝚎𝚗'𝚜 𝚏𝚞𝚝𝚞𝚛𝚎. @𝙲𝙰𝙿𝙴_𝙳𝚘𝚌𝚝𝚘𝚛𝚜 @𝙲𝚕𝚒𝚖𝚊𝚝𝚎𝙷𝚞𝚋𝚈YCBill Comeau 🇨🇦 @Billius27
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0 Followers 159 FollowingMasks4Wpg @masks4wpg
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466 Followers 3K Following_____________________.. @BaszkoM
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685 Followers 218 Following Engineer, Researcher @CERN. Passionate for fundamental science. Advocate for science-driven policies. Views my own 🇨🇦🇵🇹LET'S AIR / NOUS AÉR.. @nousaerons
5K Followers 452 Following A group and an initiative advocating for effective ventilation. Our infographics in English : https://t.co/mNuTF6nlD8 Also on Mastodon, BlueSky.Nikkole @nhughesoly
2K Followers 2K Following MPA. Energy policy specialist. Dog mom x3. Disabled by #MECFS. Former #waleg nonpartisan staff. She/her. Views are my own. I block ableists. 🇵🇸🪬🏳️🌈Extra Adventure @ExtraAdventure
384 Followers 726 Following #Photography, #travel stories, travel hacking tips, tricks and #flightdeals so you can do like I do...Long Covid Advocacy I.. @LCAIreland
2K Followers 3K Following The voice for Long Covid in Ireland. An advocacy group comprised of Long Covid patients fighting for awareness of LC & adequate services in Ire for all patientsC. @Christi69966963
59 Followers 2K Following Twitter gave me this handle in ‘17 when I came to lurk; then COVID happened & guess I live here now. student of public health. parent. ND. radical love.Phi @phi_psd
5K Followers 930 Following Australian/Greek/Cypriot nerdy visual designer, living in Berlin. 🇨🇾🇬🇷🇩🇪 end #prescribedharm #longcovid & #mecfs @berlinbuyersDr Karen Pinder 🔬 @DrKarenPinder
4K Followers 3K Following Professor of Teaching, #histology director, #pathology enthusiast & #MEDD411 (Fdn's of Med Practice) course director @ the UBC medical school | Vancouver 🇨🇦.Stone Cold Pillar @StoneColdPillar
14K Followers 15K Following Vote like your life depends on it. At the very least, the future of the planet does.🌎 Democracy. Climate Change. COVID. SAME on Masto and Bsky @StoneColdPillarNick Tsergas @nicktsergas
16K Followers 6K Following Health News Editor at @CanHealthwatch. Registered Nurse. Tweets are representative of my opinions only, but maybe yours too.Moriah (Galores Flyin.. @GaloresCircus
3K Followers 1K Following Covid. Info literacy. Research. Healthcare/Repro. Social science. Swearing/Irreverence She/her Vax+mask+clean air! 😷 ☁️GaloresCircus at Blue SkyRaj Thamotheram @RajThamotheram
4K Followers 5K Following “Civilizations die from suicide, not by murder.” ― Arnold ToynbeeDr. Sean Mullen @drseanmullen
23K Followers 6K Following Research Director @EtcLab studying #Exercise #Technology #Cognition #Neuroscience | Husband | Dad | #MartialArtist | #PTRTennisProDr Fiona James @LangevinEqn
2K Followers 2K Following Veterinary neurologist. Neuroscientist. Professor. Mum. Wife. Home cook. Cis. She/her. Same handle across platforms.Living Cities @Living_Cities
62K Followers 3K Following A collaborative of foundations & financial institutions working to close racial gaps, so people in U.S. cities are economically secure & building wealth.Congress for the New .. @NewUrbanism
96K Followers 2K Following The Congress for the New Urbanism helps create vibrant and walkable cities, towns, and neighborhoods.Planetizen @planetizen
74K Followers 2K Following A community of planning intelligence. News, views, jobs, education, and more. Planetizen Courses: @plnzcoursesBloomberg CityLab @CityLab
242K Followers 819 Following All things urban. Read for free: https://t.co/xNhsFT17ek. Subscribe to our new newsletter on architecture and design. Link in bio ⬇️Smart Cities Dive @smartcitiesdive
136K Followers 1K Following We provide business journalism and in-depth insight into the most impactful news and trends shaping smart cities. Sign up here: https://t.co/rr6l7784w8ICCCAD @ICCCAD
22K Followers 3K Following International Center for Climate Change and Development. Tackling #ClimateChange through research, capacity building and collaboration.Nigel Topping @topnigel
27K Followers 2K Following The High-Level Climate Champion (@hlcchampions) for #COP26, born Glasgow ppm 320, views my own. Part of @COP26. #RaceToZero #RaceToResilience #GFANZGreen Climate Fund @theGCF
95K Followers 221 Following GCF is the world's largest climate fund dedicated to helping developing countries take #climateaction.High-Level Climate Ch.. @hlcchampions
8K Followers 732 Following H.E. Razan Al Mubarak and @ArpadaraiNigar are the High-Level Champions for #COP28 and @COP29_AZ and lead the #RaceToZero #RaceToResilienceMichelle Gamage @Michelle_Gamage
2K Followers 939 Following Health reporter at @TheTyee. mgamage (at) thetyee (dot) ca Bsky: @michellegamage.bsky.socialThe gala class will wear a ribbon for breast cancer, but not wear a #mask to stop the #breastcancer patient from dying of #flu #covid #RSV
@NjbBari3 It is intentional. I'm out of options now. The health charities are mostly (not all, I know) PR and networking opportunities for the gala class, who look good while avoiding paying the taxes that would render the charities redundant. x.com/OhCasavant/sta…
I wonder how many children the incompetence of our public health and infection control leaders has disabled in Canada? Insisting COVID isn't serious, doesn't spread in schools, spreading misinformation, ignorantly yet confidently denying the protection provided by respirators.
@bphillipsonMP @wesstreeting @GwynneMP @PreetKGillMP This is NOT ok
Covid is the only disease I know of that is so risky for people in these groups and is so solidly ignored. They pretend that they are trying to make Covid and every day disease, not exceptional but everything they do regarding Covid is exceptional.
It absolutely makes no sense to me… how charities that are meant to be for patients either strokes, diabetes, heart problems, cancers… do not do any health promotional work on the topic of C19. Some of them are actively promoting spreading it. The world is upside down.
Ventilation/HEPA filtration is to prevent long range transmission of COVID, and extreme concentrations of infectious aerosol for the most part. You definitely need a properly fitted respirator at conversation distance… and personally I wear one whenever I am in a building that…
This is super interesting and useful inquiry! Not only does CO2 provide a measure of rebreathed fraction & a proxy for fresh air intake, it’s also a measure of air pH which directly impacts viral decay.
I’m excited to discuss our latest research on how ambient CO2 affects how long #SARSCoV2 remains infectious in air. We report that even subtle increases in CO2 affects both how long #COVIDisAirborne and transmission risk. Here’s a🧵going over the findings nature.com/articles/s4146…
Top respirator is the one I was most recently using in the subway. Bottom one is brand new, for my next subway trips. Subway air is dirty. Doesn’t matter how much officials deflect / deny or transit union ignores it. cbc.ca/amp/1.5415993
Immunity cartoon on my #bced whiteboard depicting B cells turning into plasma cells which release antibodies for the primary immune response . B memory cells always remember the antigen " Je me souviens! "
Oh. My. God.
This study mechanistically connects the predicted rise in ambient levels of CO2 with an increased likelihood of respiratory disease transmission. As the global CO2 concentration continues to increase, the length of time respiratory viruses remain infectious in the air as well.
It looks like Highly Pathogenic Avian Flu is another "AA" disease "Airborne & Asymptomatic"
Transmission "...AMONG cows not showing symptoms." That means no lesions on teats. No soupy milk. And they still have transmission. Asymptomatic transmission. The question to ask the CDC, @Alexander_Tin @HelenBranswell in the next meeting? When asymptomatic transmission was
💚Brilliant 30-sec 🎥 fr @JohnSnowProject❗️ 💚”Don’t let #Covid break your heart”💔 💚Pls share👇 #CovidIsAirborne Prevent infection❗️@PeoplesCDC @1goodtern @kprather88 @DrJudyStone @luckytran @Protect_BC #MedEd @SMpwrgr @scott_squires @catladyactivist @keetmuise #Dysautonomia
See 30-sec🎥👆 💔”Don’t let #Covid break your heart”💔 🔺Prevent infection #N95 #FFP2 @bees_oz @joaquinlife @cv_cev @Nat_E_Pearson @calirunnerdoc @DoNoHarmBC @B_Dogs4 @MamaLawyer3 @PhillyPhile215 @DavidJoffe64 @OhCasavant @ONSchoolSafety @WangCandice @Saffiya_Khan1 @ELHopkins
@DickZoutman @RougeMatisse @Comm_in_Care @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @OhCasavant @TheWHN @LaSeletzky Gonna be hard to wiggle out of that with both OHRS and the RAI-MDS. Also interested to see when Ontario Health as funder and roadblock gets looped in.
@OhCasavant @DickZoutman @gomindshine1 @Comm_in_Care @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @TheWHN @LaSeletzky Yes, I wholeheartedly agree 👍
@DickZoutman @gomindshine1 @Comm_in_Care @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @OhCasavant @TheWHN @LaSeletzky 👍 good. Accountability matters, it forces change
@Comm_in_Care @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @OhCasavant @TheWHN @LaSeletzky This class action has now been certified to proceed. And the appeal to stop the class action against the a government of Ontario was lost. Both class actions are going ahead. cbc.ca/news/canada/to…
@DickZoutman @pjavidan @DrJudyStone @juliairzyk @jeffgilchrist @mryoung151 @PhillyPhile215 @MamaLawyer3 @kprather88 @irina_manta @OhCasavant @TheWHN @LaSeletzky In Quebec🇨🇦 🔺Judge approved class-action #lawsuit 🔺Failure to protect #LTC centers & causing avoidable suffering/death to 1000s of residents #LawTwitter #MedTwitter #NurseTwitter @jmcrookston @keetmuise @dupuisj @PPEtoheros @RevivalCare @yaneerbaryam montreal.ctvnews.ca/class-action-l…
@AltenbergLee The head of the Canadian immunology society said even recently that since Omicron, infection immunity is the plan. x.com/OhCasavant/sta…
e. Measles & COVID hybrid immunity "So, this [Omicron] was a blessing in disguise (in my opinion) and helped with hybrid immunity and in reducing the impact of the pandemic." President of 🇨🇦 Society for Immunology, speaking in personal capacity via personal comm. Mar 2024