Dr. Angela Cheung heads up a network of scientists and health practitioners studying long covid. She’s also a senior physician-scientist at University Health Network in…
Comments closedMonth: February 2024
Topic: cognitive issuesView all posts for the topic: cognitive issues
Long covid may cause cognitive decline of about six IQ points, study finds
It’s more than four years since the first cases of covid-19 were identified — but many of its longer-term effects, including for those living with long covid, remain unclear.
Now, a new study has some worrying findings that suggest covid may have longer-term effects on cognition and memory — and that these lead to measurable differences in cognitive performance.
The study, published Thursday in the New England Journal of Medicine, found that participants who recovered from covid symptoms had a cognitive deficit equivalent to three IQ points compared with those who were never infected, while participants suffering from unresolved covid symptoms lasting 12 weeks or more experienced a loss equivalent to six IQ points.
Comments closedTopic: Ottawa-GatineauView all posts for the topic: Ottawa-Gatineau
Ottawa Public Health stats mainly stable for COVID-19, flu and RSV
Respiratory infections in Ottawa showed little change over the last week.
Ottawa Public Health reported 83 new confirmed cases and three new deaths during the period ending Feb. 27.
Last week, there were 130 new cases and two additional deaths.
This week’s reading brought the total number of Ottawa cases to 98,254 since the pandemic began in 2020, while 1,230 people have died.
The health agency’s weekly respiratory infections dashboard showed 12 new hospitalizations for flu patients in the seven days ending Feb. 24, for a total of 199 this season. The report described flu levels as very high, the same description as last week’s data.
The report showed 21 new hospitalizations for COVID-19, for a total of 1,064, and three more hospitalizations for respiratory syncytial virus (RSV). The COVID-19 and RSV results were described as “moderate.”
Comments closedTopic: cognitive issuesView all posts for the topic: cognitive issues
Mounting research shows that COVID-19 leaves its mark on the brain, including with significant drops in IQ scores
From the very early days of the pandemic, brain fog emerged as a significant health condition that many experience after COVID-19.
Brain fog is a colloquial term that describes a state of mental sluggishness or lack of clarity and haziness that makes it difficult to concentrate, remember things and think clearly.
Fast-forward four years and there is now abundant evidence that being infected with SARS-CoV-2 – the virus that causes COVID-19 – can affect brain health in many ways.
In addition to brain fog, COVID-19 can lead to an array of problems, including headaches, seizure disorders, strokes, sleep problems, and tingling and paralysis of the nerves, as well as several mental health disorders.
A large and growing body of evidence amassed throughout the pandemic details the many ways that COVID-19 leaves an indelible mark on the brain. But the specific pathways by which the virus does so are still being elucidated, and curative treatments are nonexistent.
Comments closedTopic: measlesView all posts for the topic: measles
Canada’s chief medical officer warns of March break measles risk
Canada’s chief medical officer of health is warning people to make sure they have had two doses of measles vaccine, especially if they are travelling. That message, coming just before the heavy travel period of March break, is urgent this year with cases of measles spiking around the world and vaccination rates lagging, including across Canada.
It is also potentially complicated. Many adults are not aware of their vaccination status, and particularly whether they have had one or two measles vaccines. As well, a growing percentage of the population is without family doctors, making it more difficult to access care.
Measles can cause serious illness and even be deadly. Among potential severe complications are pneumonia, deafness and brain damage caused by inflammation of the brain.
Comments closedTopic: Waterloo RegionView all posts for the topic: Waterloo Region
Senior dies of COVID-19, raising death toll to 11 this year in Waterloo Region
A man in his 70s has died of COVID-19, the regional public health unit announced Friday in a weekly update.
This raises the death toll to 11 this year where the pandemic disease was a main or contributing cause.
Hospitalizations for the disease are stable and relatively low, averaging 13 patients per day on Feb. 17. This compares to a typical day in the pandemic with 27 patients in three local hospitals.
Comments closedTopic: long COVIDView all posts for the topic: long COVID
Solving the puzzle of Long Covid
Comments closedPreventing infections and reinfections is the best way to prevent Long Covid and should remain the foundation of public health policy. A greater commitment to nonpharmaceutical interventions, which include masking, especially in high-risk settings, and improved air quality through filtration and ventilation, are requisite. Updating building codes to require mitigation against airborne pathogens and ensure safer indoor air should be treated with the same seriousness afforded to mitigation of risks from earthquakes and other natural hazards. Reducing the risk of serious outcomes after COVID-19 and some prevention of Long Covid can be attained with vaccination of a wider spectrum of the population.
Topic: vaccinesView all posts for the topic: vaccines
Fall COVID-19 vaccine cut illness risk by half overall
The fall COVID-19 vaccine cut the risk of COVID-19 illness by about half overall, and by 67 per cent for those with a previous infection, according to new research from the Canadian network that has long tracked the performance of the annual flu shot.
This is the first time the Canadian Sentinel Practitioner Surveillance Network, which is comprised of hundreds of primary care providers in British Columbia, Alberta, Ontario and Quebec, produced mid-season estimates of the effectiveness of immunization against COVID-19.
Comments closedTopic: long COVIDView all posts for the topic: long COVID
Long Covid ‘brain fog’ may be due to leaky blood-brain barrier, study finds
From forgetfulness to difficulties concentrating, many people who have long Covid experience “brain fog”. Now researchers say the symptom could be down to the blood-brain barrier becoming leaky.
The barrier controls which substances or materials enter and exit the brain. “It’s all about regulating a balance of material in blood compared to brain,” said Prof Matthew Campbell, co-author of the research at Trinity College Dublin.
“If that is off balance then it can drive changes in neural function and if this happens in brain regions that allow for memory consolidation/storage then it can wreak havoc.”
Writing in the journal Nature Neuroscience, Campbell and colleagues report how they analysed serum and plasma samples from 76 patients who were hospitalised with Covid in March or April 2020, as well 25 people before the pandemic.
Comments closedTopic: long COVIDView all posts for the topic: long COVID
Irish scientists discover why people with long Covid can suffer ‘brain fog’
The reason why people with long Covid can suffer from “brain fog” has been discovered by Irish scientists.
The breakthrough has profound importance for the understanding of brain fog and cognitive decline seen in some patients with the condition, according researchers at Trinity College Dublin.
It brings the possibility of new treatments for the condition, but also for other neurodegenerative illnesses such as multiple sclerosis (MS), they said.
The research, published in Nature Neuroscience on Thursday, shows disruption to the integrity of blood vessels in the brains of patients suffering from long Covid and brain fog.
Comments closedTopic: Nova ScotiaView all posts for the topic: Nova Scotia
Nova Scotia Health to lift COVID-19 immunization requirement for employees
Nova Scotia Health and IWK Health are set to lift a requirement for employees, new hires and on-site medical staff to submit proof of primary series COVID-19 immunization beginning Feb. 26, 2024.
In an email to CBC News on Wednesday night, a spokesperson for Nova Scotia Health said the decision was made “in response to evolving evidence regarding COVID-19, Omicron sub-variants, protection from vaccine and a review of vaccination policies across other jurisdictions.”
NSH confirmed the change in policy after a letter to an employee was posted on social media earlier in the day. The letter advises the employee, on unpaid leave for not meeting the COVID-19 immunization requirements, they could return to work as of Monday.
Comments closedTopic: convoy occupationView all posts for the topic: convoy occupation
Ottawa Bylaw says police warned officers not to ticket ‘Freedom Convoy’ demonstrators due to ‘risk of escalation’
The City of Ottawa’s general manager of emergency and protective services says there is no double standard when it comes to how Ottawa Bylaw issues tickets to protesters who violate things like noise bylaws.
His comments come after the city announced this week that bylaw tickets were not issued to protesters in Ottawa for the “Freedom Convoy” anniversary rally on Saturday, despite the fact that a group of protesters set off fireworks in a parking lot on Queen Street, in violation of the city’s fireworks bylaw.
Comments closedTopic: long COVIDView all posts for the topic: long COVID
Study shows 43% to 58% lower prevalence of long COVID among vaccinated people
A new study based on 4,605 participants in the Michigan COVID-19 Recovery Surveillance Study shows that the prevalence of long COVID symptoms at 30 and 90 days post-infection was 43% to 58% lower among adults who were fully vaccinated before infection.
The study appeared yesterday in the Annals of Epidemiology.
The 30- and 90-day timeframes were meant to compare two different definitions of long COVID. The US Centers for Disease Control and Prevention defines the condition as new or persistent symptoms 4 weeks after infection, while the World Health Organization definition defines it as 12 or more weeks after infection.
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