Reposted by Devon McDonaldProf Cath Noakes @cathnoakes.bsky.social · 30/09/2025Great to see this review on IEQ, health, wellbeing and performance in schools from UKHSA and Eurovent www.mdpi.com/2076-3298/12...mdpi.com 083 0
Reposted by Devon McDonaldDr David Joffe MB BS(Hons), PhD, FRACP @davidjoffe64.bsky.social · 12/06/2025Unfortunately this is paywalled 😡 But the summary will give you the essence... Cövid is terrible for infants💔💔 www.nature.com/articles/s41...nature.comCord blood cytokines/chemokines linked to delays in toddlers exposed to SARS-CoV-2 prenatally - Pediatric ResearchPediatric Research - Cord blood cytokines/chemokines linked to delays in toddlers exposed to SARS-CoV-2 prenatally 37722 0
Devon McDonald @mcdevonmd.bsky.social · 11/06/2025@airspotrob.bsky.social @airspothealth.bsky.social My Airspot order was lost in transit by Sendle. I haven’t had any success reaching out for support via email or your online support form. Please help. 110 0
Reposted by Devon McDonaldT. Ryan Gregory 🇨🇦 @tryangregory.bsky.social · 27/05/2025Meet "Nimbus", aka SARS-CoV-2 variant NB.1.8.1. (Thread) 1/ 12398198 0
Reposted by Devon McDonald🇨🇦Joe Vipond🇨🇦 @jvipondmd.bsky.social · 02/05/2025Hey HCWs! Science continues to advance on AGMPs (non-existence of) "The results indicate that both CPAP and HFNC have no clinically meaningful impact on aerosol emission. their use does not cause greater concentrations of aerosols when compared to normal breathing in healthy participants."nature.comAerosol emission and exposure in non-invasive ventilation - Scientific ReportsScientific Reports - Aerosol emission and exposure in non-invasive ventilation 0195 0
Devon McDonald @mcdevonmd.bsky.social · 02/05/2025“CPAP and HFNC have no clinically meaningful impact on aerosol emission. Therefore, the use of CPAP or HFNC does not expose healthcare personnel to greater concentrations of aerosols when compared to normal breathing” www.nature.com/articles/s41...nature.comAerosol emission and exposure in non-invasive ventilation - Scientific ReportsScientific Reports - Aerosol emission and exposure in non-invasive ventilation 020 0
Reposted by Devon McDonaldRyan Hisner @ryanhisner.bsky.social · 02/05/2025Incredible how quickly Yunlong Cao & co provide us w/info on the latest emerging SARS-CoV-2 variants. Already, we have great data on BA.3.2 (the divergent saltation lineage detected in South Africa & the Netherlands & NB.1.8.1, an emerging contender for global dominance. 1/9 59631 0
Devon McDonald @mcdevonmd.bsky.social · 01/05/2025Risk of post-acute symptoms among adults: A comparison study of severe COVID-19, pneumonia, and influenza journals.plos.org/plosone/arti...journals.plos.orgRisk of post-acute symptoms among adults: A comparison study of severe COVID-19, pneumonia, and influenzaBackground A retrospective cohort study was undertaken to assess the relationship between initial disease severity of COVID-19 and the risk of post-acute symptoms. The COVID-19 cohort was compared aga... 030 0
Devon McDonald @mcdevonmd.bsky.social · 01/05/2025Long COVID has unique symptoms, persistence not seen in flu, pneumonia, research suggests www.cidrap.umn.edu/covid-19/lon...cidrap.umn.eduLong COVID has unique symptoms, persistence not seen in flu, pneumonia, research suggests 261 0
Devon McDonald @mcdevonmd.bsky.social · 30/04/2025Both this result and @cathnoakes.bsky.social CLASS-ACT study results have been presented at conferences with publications still pending as far as I can see. www.newscientist.com/article/2398...newscientist.comSchools cut covid-19 sick days by 20 per cent using HEPA air filtersPlacing HEPA air filters into classrooms in the Bradford area of the UK reduced the number of covid-19-related absences among students by more than 20 per cent 032 0
Devon McDonald @mcdevonmd.bsky.social · 30/04/2025Air filters in classrooms reduce sick days by more than 10 per cent www.newscientist.com/article/2478...newscientist.comAir filters in classrooms reduce sick days by more than 10 per centPutting air filters in classrooms seems to boost student attendance, which may be due to them reducing levels of air pollution, pollen, pathogens or all three 174 0
Reposted by Devon McDonaldLong Covid Advocacy @longcovidadvoc.com · 30/04/2025🙌 Great news in New Scientist. An experimental study shows that air filters in classrooms: Reduced absence by: 👩🏫 12.5% or 1.3 days per pupil Reduced PM2.5 by: 🚸 32% Air filtration is a simple way to improve life for everyone. So what's stopping the government?! 619781 0
Devon McDonald @mcdevonmd.bsky.social · 30/04/2025“These results support the concept that viral bioaerosols generated from patients remain infectious over long-distance transport through a building ventilation system.” In a facility purpose-built to study TB transmission. academic.oup.com/ofid/article...academic.oup.comHuman Source Severe Acute Respiratory Syndrome Coronavirus 2 Aerosol Transmission to Remote Sentinel HamstersWe tested human-generated bioaerosol transmission of SARS-CoV-2 via building ventilation by directing ward-extract air to caged hamsters. Over 58% of anima 152 0
Reposted by Devon McDonaldJoe Allen @joeallenjoe.bsky.social · 29/04/2025Firefighters, first responders, nurses, and doctors rely on *NIOSH-approved* respirators. (During the pandemic we saw *many* counterfeit respirators going to hospitals.) The program that certifies respirators was eliminated. 36738 0
Reposted by Devon McDonaldMichelle Keep @jmkeep.bsky.social · 26/04/2025This is so Canadian. Body Break doing a special elbows up get out to vote segment. 271073432 0
Reposted by Devon McDonaldDavid Fisman. @dfisman.bsky.social · 25/04/2025For what it’s worth, here’s the editorial I sent the Globe and Mail April 5. The Globe took a pass. Balancing Individual Rights and Community Health Requires Knowledge of History 21390169 0
Reposted by Devon McDonaldBlake Murdoch @blakemurdoch.bsky.social · 24/04/2025COVID infection tripled the risk of inflammatory heart diseases and was associated with 68% increased risk of any cardiovascular symptoms in kids with normal hearts. Study period March 2020 to September 2023. Minimum 6 month followup. www.nature.com/articles/s41... 8279144 0
Reposted by Devon McDonaldLinsey Marr @linseymarr.bsky.social · 24/04/2025I just heard the disappointing news that a @nationalacademies.org study on far UV to reduce transmission of respiratory infections was canceled. www.nationalacademies.org/our-work/cli... /1nationalacademies.org 512547 0
Devon McDonald @mcdevonmd.bsky.social · 24/04/2025Studies detail high rates of long COVID among healthcare, dental workers www.cidrap.umn.edu/covid-19/stu...cidrap.umn.eduStudies detail high rates of long COVID among healthcare, dental workers 012 0
Devon McDonald @mcdevonmd.bsky.social · 20/04/2025RSV tied to higher risk of death in adults; severe RSV linked to prematurity in kids www.cidrap.umn.edu/respiratory-...cidrap.umn.eduRSV tied to higher risk of death in adults; severe RSV linked to prematurity in kids 020 0
Devon McDonald @mcdevonmd.bsky.social · 18/04/2025This is the way healthydebate.ca/2025/04/topi...healthydebate.caThe simple metal box that could change the world - Healthy DebateThis quiet, repairable metal air cleaner is an inexpensive long-term disease prevention tool for public spaces. 1159 0
Reposted by Devon McDonaldDavid Fisman. @dfisman.bsky.social · 18/04/2025So @mark-ungrin.bsky.social nails it We have a significant cultural problem in academic medicine in Canada, and it ties a lot of the dysfunction and pseudo-science together. canadahealthwatch.ca/2025/04/18/t...canadahealthwatch.caTrump’s cronies aren’t what broke public healthThe structural blind spots that undermine medical progress and how to fix them. 38946 0
Reposted by Devon McDonaldMark Ungrin @mark-ungrin.bsky.social · 18/04/2025canadahealthwatch.ca/2025/04/18/t...canadahealthwatch.caTrump’s cronies aren’t what broke public healthThe structural blind spots that undermine medical progress and how to fix them. 0167 0
Reposted by Devon McDonaldCIDRAP @cidrap.bsky.social · 15/04/2025Research links #COVID to poor kidney outcomes in US youth Children and adolescents were at higher risk for new-onset mild and moderate chronic kidney disease from 2020 to 2023. www.cidrap.umn.edu/c... 15832 0
Reposted by Devon McDonaldJacob T. Levy @jacobtlevy.bsky.social · 14/04/2025I had been doubtful that we were going to have a "this is the crisis moment" with Trump, as opposed to "everything about this is a destructive catastrophe." But the Abrego Garcia case is the crisis moment. 1/ 9865822190 0
Reposted by Devon McDonaldJacob T. Levy @jacobtlevy.bsky.social · 14/04/2025The slope isn't slippery; the frog isn't gradually getting boiled. Within its first hundred days the Trump administration has openly asserted the right/ power to seize and imprison anyone— including political dissidents, including citizens— and deprive them of any legal recourse at all. 5/ 2647841623 0
Reposted by Devon McDonaldDavid Fisman. @dfisman.bsky.social · 13/04/2025canadahealthwatch.ca/2025/04/13/w...canadahealthwatch.caWhat makes a good public health leader?Canada is searching for a new Chief Public Health Officer. Leadership matters, especially in a crisis. 1613967 0
Reposted by Devon McDonaldDr Satoshi Akima, FRACP @toshiakima.bsky.social · 13/04/2025I repeat: there’s no such thing as “just a cold”. The flu is even worse. Then there’s COVID. sambadenglish.com/miscellany/h...sambadenglish.comCommon respiratory illness may triple death risk in adults within a year, shows studyAdults with respiratory syncytial virus-associated acute respiratory infection (RSV-ARI) are likely to be at a 2.7-fold higher risk of death within one year, warned a study HEALTH & WELLNESS 317052 0
Reposted by Devon McDonaldDavid Fisman. @dfisman.bsky.social · 12/04/2025Not sure why there’s so much pushback to the idea that Covid and flu are immune suppressive I’m sitting in a wonderful talk at @escmid.bsky.social about „VAPA“ (virus associated pulmonary aspergillosis). Opportunistic infection that occurs after Covid and flu due to immune injury 925681 0
Reposted by Devon McDonaldMichelle Cohen @docmcohen.medsky.social · 12/04/2025Reminder as we watch measles rates climb in Canada that *this* is Poilievre's attitude towards vaccination during a public health emergency. MMR vaccination has long been mandated for health care workers. Would a Poilievre govt ban the MMR mandate in health care during a huge measles outbreak? 69907617 0
Reposted by Devon McDonaldMaxwell Smith, PhD @maxwellsmith.bsky.social · 12/04/2025We also have an MMR vaccination requirement in schools in Ontario. Imagine what the state of our measles outbreak might look like right now without it. Suggesting we are more free when we put our kids and the broader public at greater risk of preventable disease is a naïve view of freedom. 65923 0
Reposted by Devon McDonaldMaxwell Smith, PhD @maxwellsmith.bsky.social · 12/04/2025Remember those who opposed vaccine mandates, saying they'd lead to people losing their jobs and "shortages" in the health system? Well, they're in charge now, and they've just indiscriminately fired >25,000 people at the NIH, FDA, CDC, and CMS. apnews.com/article/trum...apnews.comHere's where jobs and programs are being cut at the nation's top health agenciesThousands of people at the nation’s top health agencies were laid off Tuesday. The moves will shrink the Department of Health and Human Services to 62,000 positions, lopping off nearly a quarter of it... 1229 0
Reposted by Devon McDonaldProf Brendan Crabb AC @brendancrabb.bsky.social · 12/04/2025Yet more data showing that COVID is far from a nothing-burger for kids although it is widely perceived to be, as this, & the next linked paper, shows. We can & should be doing more, esp. on the vaccination & clean indoor air at school/public transport/home fronts. 1/ www.nature.com/articles/s41...nature.comCardiovascular post-acute sequelae of SARS-CoV-2 in children and adolescents: cohort study using electronic health records - Nature CommunicationsPost-acute sequelae of SARS-CoV-2 infection affecting the cardiovascular system have been reported, but evidence in young people is limited. Here, the authors quantify the incidence of a range of outc... 616255 0
Reposted by Devon McDonaldno brain, only alison @alisonborealis.bsky.social · 12/04/2025Canadians! I have an assignment for you this weekend. What is THE MOST CANADIAN thing you own? It can be anything. A book, a garment, a food item, a tool, a decorative object, a cd, anything. #CanCon #Canada 12459786 0
Reposted by Devon McDonaldSean Mullen, Ph.D. @drseanmullen.bsky.social · 12/04/2025Increased ventilation leads to better cognitive performance among university students. Imagine that. 9285106 0
Devon McDonald @mcdevonmd.bsky.social · 11/04/2025“children and adolescents with prior SARS-CoV-2 infection are at a statistically significant increased risk of various cardiovascular outcomes…compared to uninfected controls.” www.nature.com/articles/s41...nature.comCardiovascular post-acute sequelae of SARS-CoV-2 in children and adolescents: cohort study using electronic health records - Nature CommunicationsPost-acute sequelae of SARS-CoV-2 infection affecting the cardiovascular system have been reported, but evidence in young people is limited. Here, the authors quantify the incidence of a range of outc... 010 0
Devon McDonald @mcdevonmd.bsky.social · 10/04/2025Some mutations more common in BAL sample sequences. So interesting. 000 0
Reposted by Devon McDonaldRyan Hisner @ryanhisner.bsky.social · 10/04/2025A fascinating SARS-CoV-2 sequence was recently uploaded—collected from a dog in Kazakhstan in July 2022. Usher puts the sequence one nuc mutation from the Wuhan reference (C21846T, S:T95I)—i.e. pre-D614G. Could this sequence somehow have a close connection to the first days of the pandemic? 1/18 37921 0
Devon McDonald @mcdevonmd.bsky.social · 09/04/2025Characteristic immune cell interactions in livers of children with acute hepatitis revealed by spatial single-cell analysis identify a possible postacute sequel of COVID-19 @faridjalali.bsky.social gut.bmj.com/content/earl...gut.bmj.comCharacteristic immune cell interactions in livers of children with acute hepatitis revealed by spatial single-cell analysis identify a possible postacute sequel of COVID-19Background A rise in paediatric cases of acute hepatitis of unknown origin (AHUO) was observed in 2022, some requiring liver transplantation. A link to adeno-associated virus 2 infection and CD4+T-cel... 000 0
Reposted by Devon McDonaldChristos Argyropoulos MD, PhD, FASN 🇺🇸 0kale/acc @christosargyrop.bsky.social · 07/04/2025Remember the "mysterious" hepatitis outbreak in UK kids that baffled experts back in 2022? The one we were told was due to adenovirus (or even strawberries, allergies, and lockdowns)? The one that labeled ppl mentioning the C word as fearmongerers? Turns out it was #covid19 . 23461221 0
Devon McDonald @mcdevonmd.bsky.social · 09/04/2025Invasive Group A Streptococcal Infection in Children, 1992-2023 jamanetwork.com/journals/jam...jamanetwork.comPediatric Invasive Group A Streptococcal InfectionsThe case series describes the epidemiology of pediatric invasive group A streptococcal infections in Toronto and Peel region of Canada from 1992 to 2023. 021 0
Reposted by Devon McDonaldRyan Marino, MD @ryanmarino.bsky.social · 07/04/2025So far there have been three measles deaths in under six weeks in the ongoing US measles outbreak. Prior to this year there had only been three measles deaths in the United States in total in the entire last thirty years.yourlocalepidemiologist.substack.comThird measles deathThis is not normal. For three reasons. 23828373 0
Reposted by Devon McDonaldDavid Fisman. @dfisman.bsky.social · 04/04/20253 people in intensive care with MEASLES in Ontario. In normal times the CMOH would be shown the door for this. In our dumb time, the CMOH pops out of his apparent hidey-hole to say the situation is “stable”. www.cbc.ca/amp/1.7501094cbc.caOntario reports 89 new measles cases, bringing provincial count to 661 44879367 0
Devon McDonald @mcdevonmd.bsky.social · 04/04/2025COVID-19 may put patients at risk for other infections for at least 1 year www.cidrap.umn.edu/covid-19/cov...cidrap.umn.eduCOVID-19 may put patients at risk for other infections for at least 1 year 010 0
Reposted by Devon McDonaldEric Topol @erictopol.bsky.social · 02/04/2025The vaccine against Shingles helps protect against dementia, results of a natural experiment, adding to prior evidence "implications are profound" New @nature.com www.nature.com/articles/d41... nature.com/articles/s41...nature.comA natural experiment on the effect of herpes zoster vaccination on dementia - NatureUsing a natural experiment that avoids common bias concerns, this study finds that the live-attenuated shingles vaccine reduced the probability of a new dementia diagnosis within a follow-up period of... 16459021834 0
Reposted by Devon McDonaldDr David Joffe MB BS(Hons), PhD, FRACP @davidjoffe64.bsky.social · 03/04/2025More evidence in support of Metformin in Acute Covid www.nature.com/articles/s41...nature.comMetformin alleviates inflammatory response and severity rate of COVID-19 infection in elderly individuals - Scientific ReportsScientific Reports - Metformin alleviates inflammatory response and severity rate of COVID-19 infection in elderly individuals 910629 0