Dr. Jen Irwin
@drjenirwin.bsky.social
Professor, Health Promotion, views are my own. Evidence-informed decision-making is important. Integrity matters. N95 wearer. Dog mom. (She/her) 🇨🇦
Long COVID is global, fast growing, with new cases daily.
“An endemic disease is one that is consistently present throughout a specific region or population.
A pandemic occurs when a disease spreads across countries or continents at a fast rate with new cases appearing every day.”
[PHO, 2022]
“An endemic disease is one that is consistently present throughout a specific region or population.
A pandemic occurs when a disease spreads across countries or continents at a fast rate with new cases appearing every day.”
[PHO, 2022]
January 6, 2026 at 4:02 PM
Long COVID is global, fast growing, with new cases daily.
“An endemic disease is one that is consistently present throughout a specific region or population.
A pandemic occurs when a disease spreads across countries or continents at a fast rate with new cases appearing every day.”
[PHO, 2022]
“An endemic disease is one that is consistently present throughout a specific region or population.
A pandemic occurs when a disease spreads across countries or continents at a fast rate with new cases appearing every day.”
[PHO, 2022]
Reposted by Dr. Jen Irwin
If I were paid to do this job, I'd be in the media and on social media every day.
I'd say:
1)get vaccinated for covid and the flu.
2) wear a respirator (N95) mask in crowded indoor spaces like public transit.
3) keep your holiday get-togethers safe by keeping things well ventilated and filtered.
I'd say:
1)get vaccinated for covid and the flu.
2) wear a respirator (N95) mask in crowded indoor spaces like public transit.
3) keep your holiday get-togethers safe by keeping things well ventilated and filtered.
December 27, 2025 at 6:24 PM
If I were paid to do this job, I'd be in the media and on social media every day.
I'd say:
1)get vaccinated for covid and the flu.
2) wear a respirator (N95) mask in crowded indoor spaces like public transit.
3) keep your holiday get-togethers safe by keeping things well ventilated and filtered.
I'd say:
1)get vaccinated for covid and the flu.
2) wear a respirator (N95) mask in crowded indoor spaces like public transit.
3) keep your holiday get-togethers safe by keeping things well ventilated and filtered.
Reposted by Dr. Jen Irwin
🚨🧵by Dr. @harryspoelstra.bsky.social on XTwitter:
"Astrocyte-Mediated Hippocampal Damage in the Pathogenesis of Dysexecutive Syndrome Following COVID-19: A Narrative Review.
Another interesting review study from Italy: Hippocampal dysfunction post C19..."
Full 🧵
threadreaderapp.com/thread/20081...
"Astrocyte-Mediated Hippocampal Damage in the Pathogenesis of Dysexecutive Syndrome Following COVID-19: A Narrative Review.
Another interesting review study from Italy: Hippocampal dysfunction post C19..."
Full 🧵
threadreaderapp.com/thread/20081...
January 5, 2026 at 6:56 PM
🚨🧵by Dr. @harryspoelstra.bsky.social on XTwitter:
"Astrocyte-Mediated Hippocampal Damage in the Pathogenesis of Dysexecutive Syndrome Following COVID-19: A Narrative Review.
Another interesting review study from Italy: Hippocampal dysfunction post C19..."
Full 🧵
threadreaderapp.com/thread/20081...
"Astrocyte-Mediated Hippocampal Damage in the Pathogenesis of Dysexecutive Syndrome Following COVID-19: A Narrative Review.
Another interesting review study from Italy: Hippocampal dysfunction post C19..."
Full 🧵
threadreaderapp.com/thread/20081...
~ 500,000 journal articles later, there’s about a half a million reasons to adapt to living with COVID by implementing logical and evidence-based protections against this novel virus, and there… 1/4
January 4, 2026 at 11:41 PM
~ 500,000 journal articles later, there’s about a half a million reasons to adapt to living with COVID by implementing logical and evidence-based protections against this novel virus, and there… 1/4
Reposted by Dr. Jen Irwin
Have we learned nothing?
Hitler’s annexation of countries was initially met with appeasement, encouraging more annexation; after WW 2 the United Nations was created to prevent WW 3 by outlawing annexation.
Winston Churchill: “An appeaser is one who feeds a crocodile, hoping it will eat him last”
Hitler’s annexation of countries was initially met with appeasement, encouraging more annexation; after WW 2 the United Nations was created to prevent WW 3 by outlawing annexation.
Winston Churchill: “An appeaser is one who feeds a crocodile, hoping it will eat him last”
"Mexico strongly condemns and rejects the military actions carried out unilaterally ... by armed forces of the United States of America against targets in the territory of the Bolivarian Republic of Venezuela, in clear violation of Article 2 of the [UN] Charter"
www.gob.mx/sre/prensa/m...
www.gob.mx/sre/prensa/m...
January 4, 2026 at 10:59 AM
Have we learned nothing?
Hitler’s annexation of countries was initially met with appeasement, encouraging more annexation; after WW 2 the United Nations was created to prevent WW 3 by outlawing annexation.
Winston Churchill: “An appeaser is one who feeds a crocodile, hoping it will eat him last”
Hitler’s annexation of countries was initially met with appeasement, encouraging more annexation; after WW 2 the United Nations was created to prevent WW 3 by outlawing annexation.
Winston Churchill: “An appeaser is one who feeds a crocodile, hoping it will eat him last”
Reposted by Dr. Jen Irwin
Anyway, if you are just doing your best to try and exist, don’t forget that just doing your best to try and exist can still be enough to inspire others and still be enough to make the world a better place ❤️✊🐘
January 3, 2026 at 10:09 PM
Anyway, if you are just doing your best to try and exist, don’t forget that just doing your best to try and exist can still be enough to inspire others and still be enough to make the world a better place ❤️✊🐘
Yikes! Ontario wastewater posted today (Jan 2) with data up to Dec 21st…be careful out there folks. Layered protections work, are equity-supportive, and are simply logical:
wwater.ca/Ontario
wwater.ca/Ontario
Ontario - Wastewater 🇨🇦
At-a-glance graphs of COVID-19, RSV, and flu levels in Ontario, Canada.
wwater.ca
January 2, 2026 at 8:36 PM
Yikes! Ontario wastewater posted today (Jan 2) with data up to Dec 21st…be careful out there folks. Layered protections work, are equity-supportive, and are simply logical:
wwater.ca/Ontario
wwater.ca/Ontario
Reposted by Dr. Jen Irwin
Make masks FIT and FREE! As we experience a record breaking flu surge and the ongoing effects of COVID, now would be a great time to ramp up efforts to make high quality N95 masks free and widely available. Really wish free mask distribution was a regular feature of progressive events for example.
January 2, 2026 at 7:12 PM
Make masks FIT and FREE! As we experience a record breaking flu surge and the ongoing effects of COVID, now would be a great time to ramp up efforts to make high quality N95 masks free and widely available. Really wish free mask distribution was a regular feature of progressive events for example.
Reposted by Dr. Jen Irwin
“A bunch of well-off men who are not very affected by politics making fun of people who very much are is the short story of how we got here.”
Glad to see multiple outlets covering this Jon Stewart moment
www.jezebel.com/jon-stewart-...
Glad to see multiple outlets covering this Jon Stewart moment
www.jezebel.com/jon-stewart-...
Splinter: Jon Stewart Is a Symbol of America's Crumbling Democracy
Since 2007, Jezebel has been the Internet's most treasured source for everything celebrities, sex, and politics...with teeth.
www.jezebel.com
January 2, 2026 at 2:00 AM
“A bunch of well-off men who are not very affected by politics making fun of people who very much are is the short story of how we got here.”
Glad to see multiple outlets covering this Jon Stewart moment
www.jezebel.com/jon-stewart-...
Glad to see multiple outlets covering this Jon Stewart moment
www.jezebel.com/jon-stewart-...
May the year ahead include integrity, kindness, and logic that includes society valuing clean air and protecting one another from airborne viruses.
January 1, 2026 at 10:18 PM
May the year ahead include integrity, kindness, and logic that includes society valuing clean air and protecting one another from airborne viruses.
Reposted by Dr. Jen Irwin
Atlanta: DeKalb County issues alert as flu-related 911 calls spike 60%
Emory Healthcare is requiring all clinical staff members to wear masks in both inpatient and outpatient settings.
www.ajc.com/wellness/202...
Emory Healthcare is requiring all clinical staff members to wear masks in both inpatient and outpatient settings.
www.ajc.com/wellness/202...
DeKalb County issues alert as flu-related 911 calls spike 60%
The 2025-2026 flu season is likely going to get worse, officials say.
www.ajc.com
January 1, 2026 at 7:52 PM
Atlanta: DeKalb County issues alert as flu-related 911 calls spike 60%
Emory Healthcare is requiring all clinical staff members to wear masks in both inpatient and outpatient settings.
www.ajc.com/wellness/202...
Emory Healthcare is requiring all clinical staff members to wear masks in both inpatient and outpatient settings.
www.ajc.com/wellness/202...
Reposted by Dr. Jen Irwin
Ontario wastewater released Dec 30th: wwater.ca/Ontario
Ontario - Wastewater 🇨🇦
At-a-glance graphs of COVID-19, RSV, and flu levels in Ontario, Canada.
wwater.ca
December 31, 2025 at 1:50 PM
Ontario wastewater released Dec 30th: wwater.ca/Ontario
Reposted by Dr. Jen Irwin
"Prof. Siegel said multiple studies have shown that improved air quality in classrooms results in better student performance on standardized tests, reduced absenteeism and less spread of infectious disease."
Schools must improve air quality to slow spread of respiratory illness, advocates say
Proper air filtration could help mitigate the rapid spread of flu and other illnesses, say experts and parents
www.theglobeandmail.com
December 27, 2025 at 5:52 AM
"Prof. Siegel said multiple studies have shown that improved air quality in classrooms results in better student performance on standardized tests, reduced absenteeism and less spread of infectious disease."
Reposted by Dr. Jen Irwin
“With New Year's celebrations in the coming days, Aoki recommends that residents who are feeling sick stay home. If staying home is not an option, he said, people should wear a mask and make sure to wash their hands as much as possible.”
New flu strain hits Waterloo Region, breaking records for hospitalizations
The new influenza virus is more intense and can’t be stopped by a standard flu shot.
www.therecord.com
December 30, 2025 at 3:24 AM
“With New Year's celebrations in the coming days, Aoki recommends that residents who are feeling sick stay home. If staying home is not an option, he said, people should wear a mask and make sure to wash their hands as much as possible.”
Reposted by Dr. Jen Irwin
Wrote about how disappointing it is that Jon Stewart punched down on people masking at @motherjones.com, when people should mind their own business and leave mask wearers be. www.motherjones.com/politics/202...
Hey Jon Stewart, jokes about wearing masks aren't funny
Critics of the Daily Show host say he's a hypocrite.
www.motherjones.com
December 29, 2025 at 6:54 PM
Wrote about how disappointing it is that Jon Stewart punched down on people masking at @motherjones.com, when people should mind their own business and leave mask wearers be. www.motherjones.com/politics/202...
Reposted by Dr. Jen Irwin
Dear Jon Stewart,
No one randomly owes you information about their health, their loved one’s health, or, understandably, just wanting to avoid Covid, which is the only way to prevent Long Covid.
No one randomly owes you information about their health, their loved one’s health, or, understandably, just wanting to avoid Covid, which is the only way to prevent Long Covid.
Hey Jon Stewart, jokes about wearing masks aren't funny
Critics of the Daily Show host say he's a hypocrite.
www.motherjones.com
December 29, 2025 at 6:59 PM
Dear Jon Stewart,
No one randomly owes you information about their health, their loved one’s health, or, understandably, just wanting to avoid Covid, which is the only way to prevent Long Covid.
No one randomly owes you information about their health, their loved one’s health, or, understandably, just wanting to avoid Covid, which is the only way to prevent Long Covid.
Reposted by Dr. Jen Irwin
🎯 The World Is Sleeping on Bird Flu, Expert Warns (Dec 29, 2025)
www.sciencealert.com/the-world-is...
www.sciencealert.com/the-world-is...
The World Is Sleeping on Bird Flu, Expert Warns
There's an unwritten rule in publishing, or so I've been told: Don't write about COVID.
www.sciencealert.com
December 28, 2025 at 11:19 PM
🎯 The World Is Sleeping on Bird Flu, Expert Warns (Dec 29, 2025)
www.sciencealert.com/the-world-is...
www.sciencealert.com/the-world-is...
COVID is bad. Influenza is bad.
Layered protections are good.
Saying ‘no’ to high risk invites is logical.
Holidays can be hard when living in reality.
You matter, your health matters, your boundaries matter.
Wishing you comfort, peace, love, and joy during the holidays and always.
Layered protections are good.
Saying ‘no’ to high risk invites is logical.
Holidays can be hard when living in reality.
You matter, your health matters, your boundaries matter.
Wishing you comfort, peace, love, and joy during the holidays and always.
December 23, 2025 at 10:02 PM
COVID is bad. Influenza is bad.
Layered protections are good.
Saying ‘no’ to high risk invites is logical.
Holidays can be hard when living in reality.
You matter, your health matters, your boundaries matter.
Wishing you comfort, peace, love, and joy during the holidays and always.
Layered protections are good.
Saying ‘no’ to high risk invites is logical.
Holidays can be hard when living in reality.
You matter, your health matters, your boundaries matter.
Wishing you comfort, peace, love, and joy during the holidays and always.
Reposted by Dr. Jen Irwin
Masking helps protect you and others! Wear masks in addition to taking other steps like vaccination and good indoor ventilation in order to avoid the spread of viruses. (Part 2/2)
December 23, 2025 at 6:27 PM
Masking helps protect you and others! Wear masks in addition to taking other steps like vaccination and good indoor ventilation in order to avoid the spread of viruses. (Part 2/2)
Reposted by Dr. Jen Irwin
You may have seen masks mentioned a lot lately, especially as the spread of multiple viruses is currently high, so it’s important to know the facts in order to protect yourself and others. Learn more and stay safe this respiratory virus season and beyond! (Part 1/2)
December 23, 2025 at 6:27 PM
You may have seen masks mentioned a lot lately, especially as the spread of multiple viruses is currently high, so it’s important to know the facts in order to protect yourself and others. Learn more and stay safe this respiratory virus season and beyond! (Part 1/2)
Reposted by Dr. Jen Irwin
From the infect 'em and study 'em files
Children who started K in 2025 in BC were born in Jan to Dec 2020.
I'm guessing min 5 COVID infections each?
Sure, lack of 1° care and assessment waits don't help.
But ...
#bced #bcpoli
news.ubc.ca/2025/11/decl...
Children who started K in 2025 in BC were born in Jan to Dec 2020.
I'm guessing min 5 COVID infections each?
Sure, lack of 1° care and assessment waits don't help.
But ...
#bced #bcpoli
news.ubc.ca/2025/11/decl...
New research reveals decline in B.C. kindergarteners developmental health after pandemic - UBC News
Data shows record-high vulnerability rates among young learners, raising concerns about long-term impacts.
news.ubc.ca
December 23, 2025 at 5:48 PM
From the infect 'em and study 'em files
Children who started K in 2025 in BC were born in Jan to Dec 2020.
I'm guessing min 5 COVID infections each?
Sure, lack of 1° care and assessment waits don't help.
But ...
#bced #bcpoli
news.ubc.ca/2025/11/decl...
Children who started K in 2025 in BC were born in Jan to Dec 2020.
I'm guessing min 5 COVID infections each?
Sure, lack of 1° care and assessment waits don't help.
But ...
#bced #bcpoli
news.ubc.ca/2025/11/decl...
Reposted by Dr. Jen Irwin
Thanks GlobalTV Canada! 🇨🇦
BREAKING: WATCH the full 60 Minutes CECOT segment here. This was sent to me anonymously. It appears to be the segment CBS' Bari Weiss killed. www.muellershewrote.com/p/watch-the-...
WATCH: The 60 Minutes CECOT Segment
I was sent the CECOT segment anonymously in a group chat.
www.muellershewrote.com
December 23, 2025 at 9:18 AM
Thanks GlobalTV Canada! 🇨🇦