Nancy Delagrave

@nancydelagrave.bsky.social

Cofondatrice de la Société canadienne de la covid, co-directrice de Covid-Stop, physicienne, mathématicienne. "To improve is to change; to be perfect is to change often." - Winston Churchill

This is terrible. The authors admit that their intervention failed to provide the correct Clean Air Delivery Rate. I mean, if you know the intervention you’re testing is inadequate, why test at all?? And why demand they REMOVE existing HEPA fitration units (which might have had the right CADR)?

Mark Ungrin@mark-ungrin.bsky.social · 2w ago

Not much to say here. The same vibes-based medicine that has been driving anti-PPE misinformation since long before COVID hit. Imagine a drug manufacturer testing its competitor's product at a subclinical dose (but "we feel like that's good enough") and then claiming it doesn't work. Unserious.

Fourth, there were also insufficient CADRs. We used the manufacturer-recommended CADR based on room volume. An explanatory study might have used more sophisticated modeling, including frequency and proximity of staff, visitor, and resident interactions and room ventilation levels to determine more precise CADR requirements.29 However, we do not believe that a greater number of HEPA filters, or the increased cost, air cooling, and noise associated with higher CADR units, would have been acceptable.

Mark Carney's made deep cuts to Natural Resources Canada that strip away science-based expertise on forest fires, "decimating capacity" to track wildfire activity. Only one forest pathologist now monitors the entire forestry system east of the Rockies. 5/ www.nationalobserver.com/2025/12/05/n...

Cuts at Natural Resources Canada ‘decimate’ wildfire and flood tracking capacity, unions warn

Carney's cuts have hit Natural Resources Canada, causing uproar from public sector unions warning the layoffs will hurt Canada's ability to respond to cliamte change and protect Canadians from wildfir...

nationalobserver.com

Aliassime d. Davidovich Fokina 6-7 7-6 6-3 6-7 6-1 Felix is into his first Wimbledon quarterfinal since 2021, equaling his best result. He had 2 match points at 5-3 but ended up going to a 5th set. ✅6th Slam QF Big moment for the Canadian #1. 🇨🇦

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La cycliste d'endurance canadienne, Sarah Ruggins,est presque arrivée à sa destination. Elle est partie de la pointe Sud de l'Espagne le 5 juin en pleine canicule et arrivera bientôt au-delà du cercle arctique à Nordkapp en Norvège, battant le record précédent détenu par un🕺 d'à peu près 3 jours.

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Le médecin américain hospitalisé à Berlin après avoir contracté le virus #Ebola en République démocratique du Congo (où il soignait des malades) et les 5 membres de sa famille ont quitté "en bonne santé" l'hôpital de Berlin, où ils avaient été évacués.

Ebola : « Un succès thérapeutique majeur », le patient américain soigné en Allemagne est guéri et a pu quitter l’hôpital - Le Parisien

Il avait été admis le 20 mai dans le quartier d’isolement pour les maladies infectieuses à haut risque. Les cinq membres de sa famille avaie

leparisien.fr

Canada currently has 1.6 gigawatts of data centre capacity, but the projects in the pipeline would balloon that number to 13.2 gigawatts. Most of those projects are slated for Alberta, where they’d be powered by natural gas — meaning a lot more emissions. www.cbc.ca/news/busines...

Graph showing more than 12 gigawatts of planned data center capacity in Alberta, compared to low hundreds of millions of megawatts in other provinces.

De l'intérêt de prévoir un isolement strict plutôt qu'une quarantaine à domicile avec tout le loisir d'infecter ses proches...

Thémis 😷 Covid is not over ≽(•⩊ •マ≼@themis2023.bsky.social · 3mo ago

L'un des passagers espagnols placés en quarantaine à Madrid après avoir débarqué de l'Hondius a été testé positif à l' #hantavirus. Il est désormais placé en isolement à l'hôpital Gómez Ulla. Pas vraiment le moment d'autoriser les quarantaines à domicile...

Analysis Of Salivary Herpesviruses Reveals Associations Between HHV-6 And Long COVID Severity Correlation.... with heightened inflammation. www.medrxiv.org/cont... 1/5

Analysis Of Salivary Herpesviruses Reveals Associations Between HHV-6 And Long COVID Severity

Background Reactivation of human herpesviruses (HHVs), particularly EBV, is associated with more severe acute SARS-CoV-2 infections and the development of Long COVID (LC). Observations of higher anti-EBV antibody levels in individuals with LC support the idea that chronic reactivation of HHVs could contribute to LC pathology. HHV shedding in saliva has also been previously associated with saliva hormone levels. This study aims to examine the relationship between salivary shedding of HHV DNA and LC symptoms, as well as cortisol, testosterone, and estradiol levels. Methods We enrolled 45 participants with LC, and 45 age-sex-matched controls. Surveys and validated health questionnaires were used to collect demographics, medical history, and symptom profiles. Saliva was self-collected at waking, 15, 30, and 45 minutes, and 8 and 16 hours after waking, across two consecutive days. Salivary cortisol, testosterone and estradiol were measured, and extracted nucleic acid was tested for EBV, HSV 1/2, HCMV and HHV-6 A/B using multiplex qPCR, plus SARS-CoV-2 and RNaseP using RT-qPCR. Findings Detection of salivary EBV and HHV-6 DNA was highest early in the morning. There were no significant differences in salivary cortisol, testosterone, or estradiol, or in EBV or HHV-6 shedding between the LC and control groups. However, salivary HHV-6 DNA levels were positively associated with a greater aggregated LC propensity score, as well as anxiety and depression scores. Interpretation The observed correlation between salivary HHV-6 shedding and symptom severity suggests HHV-6 may contribute to post-acute disease, though mechanisms remain unclear. While our study did not identify a relationship between salivary EBV shedding and LC, EBV may still play a role at earlier time points in the disease course, or in compartments not sampled here. These findings highlight the potential importance of HHV-6 in LC pathophysiology and underscore the need for longitudinal, multi-compartment studies of herpesvirus reactivation in LC. ### Competing Interest Statement A. I. co-founded RIGImmune, Xanadu Bio, Rho Bio, and PanV, and is a member of the Board of Directors of Roche Holding Ltd and Genentech. All other authors have no conflicts of interest. ### Funding Statement This work was supported in part by the Else Kroner Fresenius Prize for Medical Research 2023 (to A.I.), the Howard Hughes Medical Institute Collaborative COVID-19 Initiative (to A.I.), and the Howard Hughes Medical Institute (to A.I.), the Polybio Research Foundation (to D.P.) and the Steven and Alexandra Cohen Foundation (to D.P.). National Institutes for Health (NIH) funding sources supported AT (F31AI181508), SB (NHLBI T32HL007974-24) and CM (NCATS TL1 TR001864). Contents are solely the responsibility of the authors and do not necessarily represent the official views of NIH. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes The details of the IRB/oversight body that provided approval or exemption for the research described are given below: Mount Sinai Program for the Protection of Human Subjects (IRB 20-01758) and the Yale Institutional Review Board (IRB 2000029451) gave ethical approval for this work. Written informed consent was obtained from all enrolled participants. I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines, such as any relevant EQUATOR Network research reporting checklist(s) and other pertinent material, if applicable. Yes The pre-specified rubric used for symptom survey encoding, the qPCR analysis pipeline, statistical model results, and relevant de-identified data included in our analyses will be included as supplementary files and/or deposited on GitHub upon publication of the peer-reviewed manuscript.

medrxiv.org