Ryan Tennant
@ryantennant.ca
He/Him • PhD Candidate - Systems Design Engineering • BASc - Biomedical Engineering • Opinions own
Email: ryan.tennant@uwaterloo.ca
Website: ryantennant.ca
Email: ryan.tennant@uwaterloo.ca
Website: ryantennant.ca
Pinned
Ryan Tennant
@ryantennant.ca
· Feb 28
Wrote this piece around this time last year for the Waterloo Region Record. I think it’s still a good message in the current state of the world.
Reposted by Ryan Tennant
A new @ca.theconversation.com article, co-authored by @juliamwright.bsky.social (FRSC), explores how updated CSA standards for respirator use can better protect health-care workers and patients — and why adopting evidence-based safety measures is vital for all Canadians. #RSCVoices
The CSA’s revised standard on respirators should help us all breathe easier
The CSA Group — a not-for-profit standards organization — released for review a new draft standard on the “Selection, Use, and Care of Respirators” (CSA Z94.4:25) for workplaces, specifically includin...
rsc-src.ca
November 10, 2025 at 5:13 PM
A new @ca.theconversation.com article, co-authored by @juliamwright.bsky.social (FRSC), explores how updated CSA standards for respirator use can better protect health-care workers and patients — and why adopting evidence-based safety measures is vital for all Canadians. #RSCVoices
Reposted by Ryan Tennant
Reposted by Ryan Tennant
#Ontario #wastewater graph updated with October 26 data
- Kingston, Peel, Toronto updated: wwater.ca/Ontario
- Also updated: AB, BC, MB, NB, NL, NS, PEI, QC, SK, YT
wwater.ca
Source: health-infobase.canada.ca/wastewater/
- Kingston, Peel, Toronto updated: wwater.ca/Ontario
- Also updated: AB, BC, MB, NB, NL, NS, PEI, QC, SK, YT
wwater.ca
Source: health-infobase.canada.ca/wastewater/
November 4, 2025 at 8:20 PM
#Ontario #wastewater graph updated with October 26 data
- Kingston, Peel, Toronto updated: wwater.ca/Ontario
- Also updated: AB, BC, MB, NB, NL, NS, PEI, QC, SK, YT
wwater.ca
Source: health-infobase.canada.ca/wastewater/
- Kingston, Peel, Toronto updated: wwater.ca/Ontario
- Also updated: AB, BC, MB, NB, NL, NS, PEI, QC, SK, YT
wwater.ca
Source: health-infobase.canada.ca/wastewater/
New data from The Lancet on sepsis (a life-threatening dysregulated host immune response to infection leading to organ dysfunction) shows that in 2021 alone, 166 million sepsis cases and 21.4 million deaths were estimated globally.
That's nearly 1/3 of all global deaths for the year.
🧵1/4
That's nearly 1/3 of all global deaths for the year.
🧵1/4
Global, regional, and national sepsis incidence and mortality, 1990–2021: a systematic analysis
The global burden of sepsis increased in 2020 and 2021, reversing progress from 1990.
Sepsis incidence and mortality increased in people aged 15 years and older, especially
those aged 70 years and old...
www.thelancet.com
November 5, 2025 at 4:44 PM
New data from The Lancet on sepsis (a life-threatening dysregulated host immune response to infection leading to organ dysfunction) shows that in 2021 alone, 166 million sepsis cases and 21.4 million deaths were estimated globally.
That's nearly 1/3 of all global deaths for the year.
🧵1/4
That's nearly 1/3 of all global deaths for the year.
🧵1/4
Reposted by Ryan Tennant
Considering the vast amount of evidence that Covid can cause serious long-term health problems, mitigating risk of infection is absolutely logical. This should be utterly uncontroversial. But alas, politics, tribalism, and a desire to conform trump logic for most people. Not me.
November 4, 2025 at 11:35 AM
Considering the vast amount of evidence that Covid can cause serious long-term health problems, mitigating risk of infection is absolutely logical. This should be utterly uncontroversial. But alas, politics, tribalism, and a desire to conform trump logic for most people. Not me.
Canada is leading in safety with the new draft of the CSA standard on respirators.
@dickzoutman.bsky.social, @juliamwright.bsky.social, @mark-ungrin.bsky.social, and I explain key updates that bring protections up to date with the evidence on respirator use against airborne disease transmission.
@dickzoutman.bsky.social, @juliamwright.bsky.social, @mark-ungrin.bsky.social, and I explain key updates that bring protections up to date with the evidence on respirator use against airborne disease transmission.
The CSA’s revised standard on respirators should help us all breathe easier
New draft standards for respirator use recognize the importance of protecting workers and patients in health-care settings, where there is a higher risk of pathogen exposure
theconversation.com
November 3, 2025 at 8:37 PM
Canada is leading in safety with the new draft of the CSA standard on respirators.
@dickzoutman.bsky.social, @juliamwright.bsky.social, @mark-ungrin.bsky.social, and I explain key updates that bring protections up to date with the evidence on respirator use against airborne disease transmission.
@dickzoutman.bsky.social, @juliamwright.bsky.social, @mark-ungrin.bsky.social, and I explain key updates that bring protections up to date with the evidence on respirator use against airborne disease transmission.
Here's a recording of my 10-minute presentation about addressing shared indoor air as an accessibility barrier in our learning environments.
Feel free to share!
youtu.be/HD0wVoN7Pr8
Feel free to share!
youtu.be/HD0wVoN7Pr8
October 31, 2025 at 12:08 AM
Here's a recording of my 10-minute presentation about addressing shared indoor air as an accessibility barrier in our learning environments.
Feel free to share!
youtu.be/HD0wVoN7Pr8
Feel free to share!
youtu.be/HD0wVoN7Pr8
Reposted by Ryan Tennant
"Can we disconnect not caring about a pandemic from a rise in fascist politics, war crimes and genocide in Palestine, and a cost of living and housing crisis amid record private sector profits?" #covid #longcovid
www.thespec.com/opinion/cont...
www.thespec.com/opinion/cont...
Minimizing COVID-19 is maximizing social harm
Governments, in the interest of maintaining the status quo, seem to be misleading people and hoping for the best.
www.thespec.com
October 30, 2025 at 1:32 PM
"Can we disconnect not caring about a pandemic from a rise in fascist politics, war crimes and genocide in Palestine, and a cost of living and housing crisis amid record private sector profits?" #covid #longcovid
www.thespec.com/opinion/cont...
www.thespec.com/opinion/cont...
“Democratic governments and equitable public health must protect everyday people more than they protect private sector profits and declining public health standards, or they risk promoting fascist and eugenicist logic.”
www.thespec.com/opinion/cont...
www.thespec.com/opinion/cont...
Minimizing COVID-19 is maximizing social harm
Governments, in the interest of maintaining the status quo, seem to be misleading people and hoping for the best.
www.thespec.com
October 30, 2025 at 2:15 PM
“Democratic governments and equitable public health must protect everyday people more than they protect private sector profits and declining public health standards, or they risk promoting fascist and eugenicist logic.”
www.thespec.com/opinion/cont...
www.thespec.com/opinion/cont...
Reposted by Ryan Tennant
TVO: "What does (losing elimination status) mean?"
Dr. Bowdish: "It means we're on a list of countries that are torn apart by war & that don't have good public health -- & none of our G7 contemporaries are on that list. It shows that there are multiple systems that broke down to have this happen."
Dr. Bowdish: "It means we're on a list of countries that are torn apart by war & that don't have good public health -- & none of our G7 contemporaries are on that list. It shows that there are multiple systems that broke down to have this happen."
The family doctor crisis, underfunding of public health, misinformation, liberal exemption policies, lack of access to vaccine hesitancy clinics have all led to the resurgence of measles. Was very happy to be invited to join @jeyantvo.bsky.social at @tvotoday.bsky.social to discuss.
From Elimination to Outbreak: Measles and the Fight for Public Trust | The Rundown
YouTube video by TVO Today
youtu.be
October 29, 2025 at 1:14 PM
TVO: "What does (losing elimination status) mean?"
Dr. Bowdish: "It means we're on a list of countries that are torn apart by war & that don't have good public health -- & none of our G7 contemporaries are on that list. It shows that there are multiple systems that broke down to have this happen."
Dr. Bowdish: "It means we're on a list of countries that are torn apart by war & that don't have good public health -- & none of our G7 contemporaries are on that list. It shows that there are multiple systems that broke down to have this happen."
Reposted by Ryan Tennant
I try to be professional on this platform but there are times, like now, when it hits me hard on a visceral level that we are in the midst of a catastrophic global public health crisis and it seems, as a species, we've somehow decided that ignoring it is the best plan we've got.
October 28, 2025 at 12:42 AM
I try to be professional on this platform but there are times, like now, when it hits me hard on a visceral level that we are in the midst of a catastrophic global public health crisis and it seems, as a species, we've somehow decided that ignoring it is the best plan we've got.
It's Accessible Education Day at #UWaterloo!
This afternoon, I'm looking forward to joining the panel "What are instructors doing to integrate accessibility in their courses?"
My talk will focus on how shared indoor air quality is a fundamental barrier to accessibility and what we can do about it.
This afternoon, I'm looking forward to joining the panel "What are instructors doing to integrate accessibility in their courses?"
My talk will focus on how shared indoor air quality is a fundamental barrier to accessibility and what we can do about it.
October 15, 2025 at 1:35 PM
It's Accessible Education Day at #UWaterloo!
This afternoon, I'm looking forward to joining the panel "What are instructors doing to integrate accessibility in their courses?"
My talk will focus on how shared indoor air quality is a fundamental barrier to accessibility and what we can do about it.
This afternoon, I'm looking forward to joining the panel "What are instructors doing to integrate accessibility in their courses?"
My talk will focus on how shared indoor air quality is a fundamental barrier to accessibility and what we can do about it.
Reposted by Ryan Tennant
Clinics are the one place patients should be SAFE
Colds, flus & coughs are the #1 reason why Canadians see a doctor
…so where did masking in healthcare go?
It’s political.
Colds, flus & coughs are the #1 reason why Canadians see a doctor
…so where did masking in healthcare go?
It’s political.
How politics is putting patients and health care workers at risk www.thestar.com/opinion/cont... @drgorfinkel.bsky.social @thestar.com
𝗠𝗼𝗿𝗲 𝗻𝗲𝘄𝘀 ⇢ CanadaHealthwatch.ca 🍁
𝗠𝗼𝗿𝗲 𝗻𝗲𝘄𝘀 ⇢ CanadaHealthwatch.ca 🍁
October 10, 2025 at 10:54 PM
Clinics are the one place patients should be SAFE
Colds, flus & coughs are the #1 reason why Canadians see a doctor
…so where did masking in healthcare go?
It’s political.
Colds, flus & coughs are the #1 reason why Canadians see a doctor
…so where did masking in healthcare go?
It’s political.
Last week, I was invited to be a panel respondent to a Keynote presentation by Dr. Maurita T. Harris at the Ethical Tech for a Global Future Symposium at #UWaterloo. Dr. Harris's talk was titled, "Human Factors, Ethics, and the Future of Responsible Innovation."
🧵1/4
🧵1/4
October 9, 2025 at 8:40 PM
Last week, I was invited to be a panel respondent to a Keynote presentation by Dr. Maurita T. Harris at the Ethical Tech for a Global Future Symposium at #UWaterloo. Dr. Harris's talk was titled, "Human Factors, Ethics, and the Future of Responsible Innovation."
🧵1/4
🧵1/4
Reposted by Ryan Tennant
NEW: Vehicles registered to Doug Ford's cabinet ministers have been caught by automated speed cameras more than 20 times.
In one case, they were driving 70 in a 40 zone. On average, they were 17 over the limit. #OnPoli
globalnews.ca/news/1146373...
In one case, they were driving 70 in a 40 zone. On average, they were 17 over the limit. #OnPoli
globalnews.ca/news/1146373...
Vehicles registered to Ford cabinet ministers caught by speed cameras more than 20 times | Globalnews.ca
Documents obtained by Global News reveal that, over three years, vehicles registered to Ford’s cabinet minister received more than $3,300 in fines for speeding.
globalnews.ca
October 6, 2025 at 11:34 AM
NEW: Vehicles registered to Doug Ford's cabinet ministers have been caught by automated speed cameras more than 20 times.
In one case, they were driving 70 in a 40 zone. On average, they were 17 over the limit. #OnPoli
globalnews.ca/news/1146373...
In one case, they were driving 70 in a 40 zone. On average, they were 17 over the limit. #OnPoli
globalnews.ca/news/1146373...
At UWaterloo, TAs, RAs, and sessions are simply asking for a fair first contract, including fair wages and safer working conditions.
Use this link to send a message to UW admin and show your support for the university’s academic workers in @cupe5524.bsky.social.
cupe.ca/WeAreUW?sour...
Use this link to send a message to UW admin and show your support for the university’s academic workers in @cupe5524.bsky.social.
cupe.ca/WeAreUW?sour...
Respect, Quality Education and Liveable Wages
The University of Waterloo is very proud to be one of the top-ranked universities in the world, particularly when it comes to research. And proud of the $259 million they raised in research funding. W...
cupe.ca
September 5, 2025 at 12:10 PM
At UWaterloo, TAs, RAs, and sessions are simply asking for a fair first contract, including fair wages and safer working conditions.
Use this link to send a message to UW admin and show your support for the university’s academic workers in @cupe5524.bsky.social.
cupe.ca/WeAreUW?sour...
Use this link to send a message to UW admin and show your support for the university’s academic workers in @cupe5524.bsky.social.
cupe.ca/WeAreUW?sour...
Reposted by Ryan Tennant
Had a fantastic time talking to you, the other instructors and the students for this piece! Thanks for letting me cover this and thanks to Teaching Innovation Incubator for featuring it on the site!
Great piece on our course in @uwimprint.bsky.social @ #UWaterloo
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
No rest for the wicked (problems): TII holds Accessibility Symposium
Instructors, students and UW community members gathered in the Black and Gold room in SLC for the Wicked Problem of Accessibility Symposium on July 24, wrapping up the latest “Wicked Problems” course ...
uwimprint.ca
August 22, 2025 at 1:00 PM
Had a fantastic time talking to you, the other instructors and the students for this piece! Thanks for letting me cover this and thanks to Teaching Innovation Incubator for featuring it on the site!
Great piece on our course in @uwimprint.bsky.social @ #UWaterloo
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
No rest for the wicked (problems): TII holds Accessibility Symposium
Instructors, students and UW community members gathered in the Black and Gold room in SLC for the Wicked Problem of Accessibility Symposium on July 24, wrapping up the latest “Wicked Problems” course ...
uwimprint.ca
August 21, 2025 at 4:48 PM
Great piece on our course in @uwimprint.bsky.social @ #UWaterloo
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
“Having the skill to see things from different lenses helps them see how different accessibility issues may manifest, whether that’s indoor air quality or something else. Solving those types of problems can help everyone.“
Reposted by Ryan Tennant
Reposting for visibility. Please feel free to share widely! 👇
Are you a Radiologist in Canada?
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
August 13, 2025 at 12:29 PM
Reposting for visibility. Please feel free to share widely! 👇
Reposting for visibility. Please feel free to share widely! 👇
Are you a Radiologist in Canada?
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
August 13, 2025 at 12:29 PM
Reposting for visibility. Please feel free to share widely! 👇
Are you a Radiologist in Canada?
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
August 12, 2025 at 10:46 PM
Are you a Radiologist in Canada?
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
Your expertise is needed for a new AI research study at #UWaterloo!
Topic: AI Safety in Radiology
Task: Evaluate X-rays with an AI co-pilot
Format: Anonymous online survey
Time: ~90 minutes
To learn more and participate email: ryan.tennant@uwaterloo.ca
Just finished Risk Assessment training. The example for "hazard elimination"?
"When the University closed during the COVID-19 pandemic and people were required to work from home."
But... SARS-CoV-2 is still here, and we're back on campus.
Did I just identify a hazard through the training module?
"When the University closed during the COVID-19 pandemic and people were required to work from home."
But... SARS-CoV-2 is still here, and we're back on campus.
Did I just identify a hazard through the training module?
August 11, 2025 at 1:16 PM
Just finished Risk Assessment training. The example for "hazard elimination"?
"When the University closed during the COVID-19 pandemic and people were required to work from home."
But... SARS-CoV-2 is still here, and we're back on campus.
Did I just identify a hazard through the training module?
"When the University closed during the COVID-19 pandemic and people were required to work from home."
But... SARS-CoV-2 is still here, and we're back on campus.
Did I just identify a hazard through the training module?
Reposted by Ryan Tennant
'Another consideration, when it comes to building immunity, is the growing body of research suggesting that for several months after a Covid infection, people become more vulnerable to other infections...'
www.theguardian.com/world/2025/a...
www.theguardian.com/world/2025/a...
What do we know about the Covid-19 virus five years on?
As the virus continues to evolve, experts assess its latest variants, seasonal prevalence and levels of vaccine uptake
www.theguardian.com
August 8, 2025 at 9:00 AM
'Another consideration, when it comes to building immunity, is the growing body of research suggesting that for several months after a Covid infection, people become more vulnerable to other infections...'
www.theguardian.com/world/2025/a...
www.theguardian.com/world/2025/a...
“The use of in-home HEPA air purifiers resulted in clinically important reductions in SBP for people with elevated SBP in environments with relatively low PM2.5 concentrations.”
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Effect of HEPA Filtration Air Purifiers on Blood Pressure: A Pragmatic Randomized Crossover Trial
Particulate matter (PM) pollution is a leading cause of cardiovascular risk and illness, including elevated blood pressure (BP).The purpose of this st…
www.sciencedirect.com
August 6, 2025 at 10:50 PM
“The use of in-home HEPA air purifiers resulted in clinically important reductions in SBP for people with elevated SBP in environments with relatively low PM2.5 concentrations.”
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Ryan Tennant
There's a more fulsome instruction guide on how to comment on the proposed standard at donoharmbc.ca/national-sta...
Again, note that no other sector covered by the Z94.4 standard is attempting to undermine it in the way that IPAC managers are doing for healthcare. /6
Again, note that no other sector covered by the Z94.4 standard is attempting to undermine it in the way that IPAC managers are doing for healthcare. /6
Support a National Standard for N95s (and other respirators) in Healthcare
The Canadian Standards Association is looking for public feedback on an update of a national standard for N95s (and other respirators).
donoharmbc.ca
July 31, 2025 at 8:30 PM
There's a more fulsome instruction guide on how to comment on the proposed standard at donoharmbc.ca/national-sta...
Again, note that no other sector covered by the Z94.4 standard is attempting to undermine it in the way that IPAC managers are doing for healthcare. /6
Again, note that no other sector covered by the Z94.4 standard is attempting to undermine it in the way that IPAC managers are doing for healthcare. /6