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Tracy Casavant Oh, BASc (Chml), MES Profile picture
@OhCasavant
Jan 24, 2023 • 4 tweets • 3 min read • Read on X
As of today, @WorkSafeBC has allowed 15,027 #LongCovid claims. FIFTEEN THOUSAND.

This excludes more than 2,000 disallowed claims, and, of course, thousands of Long COVID cases, including in children, not linkable to workplace infection.

#bced #bcpoli Image
The Healthcare & Social Services and Education sectors are by far responsible for most of the claims.

Guess what? There is no way in hell workers are getting infected in healthcare & education workplaces, but the public- inc babies & kids, seniors, immunocompromised - are not 🤬 Image
Building eng'g controls, integrated w/ source control & PPE (i.e., masks!), would make workplaces more safe & reduce worker exposure to an airborne, RG3 biopathogen. Yet, despite being reg'd as Engineering Firm, no PEng worked on Worksafe COVID safety!

Image descriptions:

Tweet 1: Bar chart monthly Long COVID claims

Tweet 2: Screenshot of first few rows of table, claims per industry, showing healthcare & education as top 2.

Source: worksafebc.com/en/covid-19/cl…

Tweet 3: Screenshot of Worksafe letter confirming no PEng involved

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More from @OhCasavant

Tracy Casavant Oh, BASc (Chml), MES Profile picture
Apr 5
1/ So, I got curious about hybrid immunity, which seems to have been discovered only for SARS-CoV-2 (COVID).

I asked a bunch of experts - can we acquire measles hybrid immunity? If so, is that then a good public health goal?

🧵
2/ Text of my inquiry (1)

I understand that two doses of the measles vaccine are very effective; in fact, even one dose seems fairly protective. Nonetheless, the US CDC indicates about “3 out of 100 people with two doses of MMR vaccine will get measles if exposed to the virus”,
3/ Text of my inquiry (2)

...so non-zero odds ()cdc.gov/vaccines/vpd/m…
Read 10 tweets
Tracy Casavant Oh, BASc (Chml), MES Profile picture
Mar 12
1/ NEW from an excellent team inc @DavidElfstrom!

COVID-19 outbreak at a residential apartment building in Northern Ontario, Canada

#COVIDisAirborne

cambridge.org/core/journals/…
2/ "A professional engineer assessed the building’s HVAC systems. Whole genome sequencing and an in-depth genomic analysis were performed. Forty-five outbreak confirmed cases were identified."
cambridge.org/core/services/…
3/ "...being on the upper floors...or within three adjacent vertical lines...were both significantly associated with being a case of COVID-19...A single genomic cluster was identified...Findings are suggestive of aerosol transmission ➡️between⬅️ units."
cambridge.org/core/services/…
Read 5 tweets
Tracy Casavant Oh, BASc (Chml), MES Profile picture
Jan 27, 2023
So, if VSB doesn't ref the Ventilation Guidance developed by Min of Ed Ventilation Technical Advisory Panel, what does it reference?

This thread will provide a quick overview of the, um, ecosystem of references shown below: image showing which how doc...
VSB Ventilation Page
vsb.bc.ca/page/5017/vent…

Refers to
“MERV-13 as recommended by Min of Ed”
VCH: FAQ on Ventilation and Portable Air Cleaners - Jan 12, 2022
COVID-19 Updates page (which refs VSB Communicable Disease Plan) Header from ventilation page
VSB Communicable Disease Plan
sbvsbstorage.blob.core.windows.net/docs/b5e893b8-… Communicable Disease Prevention Plan V10.pdf Image of cover of Communica...
Read 18 tweets
Tracy Casavant Oh, BASc (Chml), MES Profile picture
Jan 27, 2023
1/ I submitted an FOI request to BC Ministry of Education for documents related to the Ventilation Technical Advisory Panel (VTAP) From 9/1/2021 To 8/31/2022.

Response is 333 pp! I will slowly post results & thread the threads here. We are all volunteers wading through this... Image
2/ The FOI package included a scanned black & white version of the Min of Ed HVAC Guidance (the Aug 8 version. The version below was updated Dec 13, 2022 🧐

www2.gov.bc.ca/assets/gov/edu…
3/ "This document is intended to provide some considerations to school districts with regards to improving HVAC system performance given the recent pandemic situation.
Note that this document is not intended to supersede any requirements from ASHRAE or other regulatory bodies."
Read 8 tweets
Tracy Casavant Oh, BASc (Chml), MES Profile picture
Dec 21, 2022
1/ Since medical establishment won't come & collect its grifters, I'm wondering it there is a consumer fraud angle we can leverage?

It should be illegal to claim that medical masks provide the same protection as respirators?

@PPEtoheros @BarryHunt008 @CSA_Group @GovCanHealth
2/ Here's @GovCanHealth on med masks:

🚨🚨🚨
Unlike FFRs, medical masks are looser in fit...
➡️do not provide same level of particulate filtration.⬅️

canada.ca/en/health-cana… Image
3/ Here's @GovCanHealth on particulate filtering facepiece respirators (FFRs) for medical use:

"...provide 95% protection around the nose and mouth against exposure to respiratory viruses and bacteria when fit appropriately to the user's face" ImageImage
Read 13 tweets
Tracy Casavant Oh, BASc (Chml), MES Profile picture
Dec 6, 2022
URGENT CALL FOR BC HUMAN RIGHTS INQUIRY

I'm submitting a letter today calling on @humanrights4BC Commissioner @KasariGovender to launch an immediate inquiry into the widespread discrimination of British Columbians.

Join the call by signing petition:

chng.it/QTMwZ4hdCJ
We, the undersigned residents of the Prov of British Columbia, respectfully request that BC Human Rights Commissioner launch an immediate inquiry into discrimination in accommodation, service & facility against many BCians due to their physical or mental disability or age.
It is well established that SARS-CoV-2 is an airborne, federally-designated Risk Group 3 biopathogen. SARS-CoV-2 is in wide circulation and has been designated a Health Hazard by the Provincial Health Officer.
Read 18 tweets

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