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Dr. Lyne Filiatrault Profile picture
@DrFiliatrault
Sep 10, 2024 • 8 tweets • 3 min read • Read on X
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Today I listened to the presentation of this RECOVER Study published in JAMA:
Recording will be available in ~2 weeks:

A few slides stood out for me. jamanetwork.com/journals/jama/…
recovercovid.org/r3-seminar-ser…
Slide from recoverCOVID.org Characterizing Long COVID in Children and Adolescents: First Main Analysis of the RECOVER-Pediatrics Observational Cohort Study.
First off, we can debate the prevalence but one thing is clear even at the lower end, LC in children & adolescents is not a rare disease. Prevalence of Long COVID in children • Early reports suggest that 4 to 58% of infected children have persistent symptoms • More recent meta-analyses • High variability in terms of prevalence (2 to 70%) Pellegrino R. Eur J Pediatr. 2022 • Prevalence of Long COVID was 25.2% Lopez-Leon S et al. Sci Rep. 2022 • Prevalence of pediatric Long COVID at 90 days post infection to be 2% to 5%. Funk et al, JAMA Open Network, 2022 Even at the low end 2 to 10%: 1.4 million children in the United States • If 10% of 65 million with positive antibodies: >6 million A disease considered rare when it affects <...
As usual in medicine, kids are not small adults. Slide from recoverCOVID.org Most of what we know about Long COVID is from adults When it comes to Long COVID in children, there are more questions than answers. • Early misconception: children and adolescents don't get COVID-19 Current misconception: children and adolescents don't get Long COVID - or if they do, their symptoms are the same as adults >>>Under-recognition Image is that of a baby followed by a child, a young adolescent with a backpack to an adult women.
Note the brain is affected. And no, it's not from the "lockdowns" or the stress of the pandemic. They had a control group for both the School-Age Children and the Adolescents. Slide from recoverCOVID.org Image shows the most common symptoms of LC in children (6-11) vs adolescents (12 to 17). The image shows a child and an adolescents with in the middle the common symptoms to both. More common in children were symptoms of LC affecting feelings and behaviour, heart and lung and the skin, hair and nails. While for adolescents, more common symptoms were different feelings and behaviour and symptoms affecting ears, eyes, nose and throat.
Behind every number is a story of a child or adolescent and their family. Slide from recoverCOVID.org The Impact of Long COVID on Families "My daughter had COVID in December 2022, and months later she is really struggling. She has been out of school for 6 weeks with debilitating fatigue, pain, and brain fog, none of which show any sign of letting up... All in all, COVID has been a devastatingly difficult journey for my family, and it's not one I wish on anyone."
The patient and family advocate and RECOVER Representative, Megan Carmilani, Founder and President of @LongCovidFam was fabulous.
She clearly made the case for accommodations in schools and greater flexibility for teaching children with Long COVID, and other disabilities.
I always struggle with research that uncovers harms and yet, the next step is not taken.
A bit like logic: "If this then what?"
"This" is already looking bad, should we not take the next step beyond "Raising Awareness". recoverCOVID.org Next Steps in understanding Long COVID in children • Characterize Long COVID in young children (birth to 5 years) •Determine the underlying mechanism and pathophysiology behind symptoms and across ages • Identify targets for therapeutics/clinical trials in children Raise awareness that Long COVID in children is a public health crisis • Long COVID in children will have substantial impacts for decades to come
Worth a read.
jou.ufl.edu/insights/stop-…

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More from @DrFiliatrault

Dr. Lyne Filiatrault Profile picture
Feb 9
Most infectious disease specialists have no clue what they’re talking about when it comes to airborne transmission.
Instead listen to the aerosol scientists, occupational hygienist, engineers and HVAC specialists. #ASHRAE
@alandrummond2 @mtlgazette @KarlweissMD @Aaron_Derfel
No clue about aerosol transmission: «Probably most important (thing) is to have you & your child wash their hands … either with alcohol-based sanitizers that are installed on walls & around the WR & the (ER), or just soap & water» Dr. Rubin, peds Montreal Children’s Hospital
«Rubin added that staying far away from people who are coughing can also help, though isn’t always possible when a facility is busy.» Dr. Rubin, peds ID, Montreal Children’s

Shows no clue about airborne transmission. Distance isn’t enough if you spend hours in packed ER WR.
Read 8 tweets
Dr. Lyne Filiatrault Profile picture
Jan 16
A must read article! Keeping the pressure on WHO is essential.
Ty @TheWHN for writing this key letter.
«analogy offered by Prof. Finkel, that surgical masks are to respirators what typewriters are to computers, isn’t rhetorical excess. It’s an argument that continued use of outdated protective tech. in hi risk medical environments may soon be viewed as institutional malpractice.»
«Indeed, regulators rarely wait for randomised trials before mandating protective equipment. No such trials were required to compel seat belts, hard hats or asbestos removal.
If the WHO updates its guidelines, litigation will follow.»
Read 5 tweets
Dr. Lyne Filiatrault Profile picture
Jan 12
BC #influenza test positivity curve is at 24.7% for the week ending January 3, 2026. Next few weeks will show if it has peaked.
Canada's #influenza test positivity rate is at 27.1% for the same week. No province, no territory is spared.
health-infobase.canada.ca/respiratory-vi…Geographic trends for influenza in Canada with data for the week ending January 3, 2026. The entire country is dark blue for 20-29.9% test positivity rate for influenza. Quebec has the highest test positivity rate for flu with 31.4% The BC influenza test positivity rate seems to be turning down at 24.7%. Time will tell if this trend continues.
In BC, both Fraser Health and Vancouver Coastal regions have widespread #influenza activity.
health-infobase.canada.ca/respiratory-vi…Map of influenza/ILI activity by reporting region in Canada, week 53 (week ending January 3, 2026) Shows that Vancouver Coastal and Fraser regions of BC have widespread influenza activity, as do most of Alberta and the central-east region of Ontario. Several regions in Quebec also have widespread influenza such as the west and centre regions, Montreal and Laval as well as Quebec and Chaudieres-Appalaches region.
Unlike in NFL where masking returned on November 3 2025 as the number of infections from respiratory illnesses was rising & "masks work"- Dr. Bridger, ID specialist.
BC public health has still not brought back masking in healthcare and LTC facilities.

cbc.ca/player/play/vi…
Read 11 tweets
Dr. Lyne Filiatrault Profile picture
Jan 8
14 🇨🇦 pediatric hospitals participate in viral surveillance program. Incl. tests done as part of routine care for children in ED, on inpatient units & in ICU. In other words, not all children presenting to ED or admitted at pediatric hospital are tested.
dashboard.sprint-kids.caThe Surveillance Program for the Rapid Identification and Tracking of Infectious Diseases in Kids tracks real-time trends in respiratory viruses among children seeking hospital care across Canada. The SPRINT-KIDS network includes 14 Canadian pediatric tertiary-care hospitals from coast-to-coast with sites in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia & Newfoundland. Data from respiratory virus testing performed as part of routine care is also contributed to the Public Health Agency of Canada (PHAC), and published as the Canadian Respiratory Virus Surveil...
Test positivity for #influenza A hit 50% and now down to 41%. However schools & childcare centres have reopened...
So we'll see, what the next few weeks of data show.

dashboard.sprint-kids.caTable 1. Highlights Changes over the past 2 weeks This table reflects the data collected over the past 2 weeks. As noted above, which pathogens tested for is based on clinical care; as such the number of tests performed for each pathogen varies. The column entitled ‘change’ reflects the difference in the percent positive between the most recent week and the preceding week, with red indicating an increase in the percent positive, green indicating a decrease and blue indicative of no change. For the week of Dec 28 to January 3 2026, Influenza A test positivity has dropped from a peak of 50% t...
#RSV test positivity is only now starting to rise vs by this time last year, it had already peeked.
dashboard.sprint-kids.caGraph of trends over time in test positivity rate for influenza A, SARS-CoC-2 and RSV in the 0-18 years old tested at the 14 Canadian pediatric hospitals participating in the viral surveillance program. Last influenza A season's peak positivity was 33% while this season flu A has come early and seemed to have already peaked at 50%. For the week ending on January 3 2026, influenza A test positivity rate has declined to 41%. At this time last year RSV positivity rate had already peaked at 40% and was declining, this season data for the week ending on January 3 2026, shows it is only now at 14...
Read 6 tweets
Dr. Lyne Filiatrault Profile picture
Jan 3
It is the season of #influenza outbreaks in BC's LTC homes & in a few hospitals.
So glad our award winning BC PHO has reinstated masks (#N95) in healthcare & LTC!
What, she hasn't! What is she waiting for?
#bcpoli Image
Did you know that the motto for @Fraserhealth is Better health. Best in health care.
Not sure about this, but @Fraserhealth does get high marks for transparent reporting of outbreaks. Image
Unlike with #Covid, @VCHhealthcare does report #influenza outbreaks.
Its own motto is, We Care for everyone, We are always Learning, We pay attention to Results.
Hmm, not so sure about that? Image
Read 12 tweets
Dr. Lyne Filiatrault Profile picture
Dec 30, 2025
Memo sent to @Fraserhealth medical staff & affiliated healthcare providers on November 20, 2025. Clearly states the importance of #influenza vaccination to minimize impact on health & on the healthcare system.
CMHO fails to reinstate masking in healthcare.
No #CleanAir Message from the Chief Medical Health Officer of Fraser Health on November 20, 2025. Dear colleagues, Respiratory viruses are starting to circulate in our communities. Now is the time to get your flu shots & encourage your loved ones, patients, clients and residents to do so. Protect what matters: yourself, those you care for, & the health system In my message on October 9, I shared how the flu season predictably increases strain on our health care system, increases wait times in emergency rooms (ERs), keeps people home from work & school, and is directly responsible for hospitalizations an...
As of November 16 2025, 17% of the @Fraserhealth region population was vaxxed against flu, with 29% of children & 39% of those 65+
As for healthcare providers in @Fraserhealth 34% had been. The target is 80%. We have some ways to go • As of November 16, 2025, 17 per cent of our population in the Fraser Health region have been vaccinated against influenza, including 29 per cent of children and 39 per cent of the population over 65 years old. • Throughout the region, 34% of self-identified health care workers have been vaccinated against influenza. This includes Fraser Health staff and medical staff, as well as community-based physicians, paramedics, allied health and others. Within Fraser Health, on-site clinics and peer immunization reached 3,426 staff. The vaccine remains effective •You may hav...
This was the #influenza vaccine uptake on November 30, 2025 by HAs. @Fraserhealth & @Northern_Health were tied for lowest % healthcare workers vaccinated against #influenza, at 38%.
The target level for BC healthcare workers vaccinated against #influenza is 80% Image
Read 13 tweets

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