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Prognostic Chats Profile picture
@PrognosticChats
Dec 28, 2023 • 13 tweets • 4 min read • Read on X
Here are the studies🧵Covid can cause;
Cognitive impairment, brain shrinkage, heart attacks, strokes, kidney damage, lung damage, diabetes, clots & other blood disorders, immunological & neurological disorders.
It is multisystem, acute & potentially chronic (1 in 10 infections)🧵
Covid infection can cause cognitive impairment & reduction in brain size.
Study: “A greater reduction in global brain size in the Covid positive cases. Those who were infected with Covid also showed on average a greater cognitive decline”
nature.com/articles/s4158…
Cognitive decline (memory impairment and reduced executive function) in those who had Covid.
The Lancet Healthy Longevity;
thelancet.com/journals/lanhl…
Covid can lead to heart attacks & strokes. Risk remains elevated for one year after an infection. Study: nature.com/articles/s4416…
Covid & Kidney damage
Study: “People with long-term COVID experienced substantial decline in eGFR (kidney function) within one year from the infection date”
academic.oup.com/ndt/article-ab…
Covid reinfection multisystem risks study: “Those people who were reinfected with Covid had:
X3.5 risk lung & kidney damage
X3 risk heart & blood disorders
X2 risk mental health disorders & new diabetes
X1.6 risk neurological disorders”
nature.com/articles/s4159…
reinfection also contributed to additional risks of;

death (risk x2.17)
and
hospitalisation (x3.32)
nature.com/articles/s4159…
Covid was the 3rd leading cause of death in Australia last year. Sadly Covid deaths continue. Despite undercounting from reduced surveillance & testing, it is still a leading cause of death globally.
bmj.com/content/381/bm…
You can get Long Covid/ Post-Covid Syndrome after your 1st, 2nd, 3rd, 4th, 5th infections. Every time you are infected you run the risk of post Covid Syndrome with a variety of potential complications.
🧵 on Long Covid / Post-Covid Syndrome
Covid causes impairment in mitochondrial function & skeletal muscle function with immune cell & amyloid deposits leading to severe exercise induced myopathy in LC
nature.com/articles/s4146…
Covid can interfere with your heart rate control, leading to palpitations, fainting, chest pain & a host of other symptoms, all through autonomic nervous system dysregulation. See BMJ Paper: Orthostatic tachycardia after covid-19
bmj.com/content/380/bm…
Covid causes 50% increased risk of New Onset Dementia in those aged >60, evident at 12 months post infection
X18 times increased risk with severe Covid infection
X2 times as much Cognitive Impairment with any infection (compared to those with no infection) - paper in linked tweet

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More from @PrognosticChats

Prognostic Chats Profile picture
Jun 27
“In the current era of high population immunity to COVID-19, additional COVID-19 doses provide very limited, if any, protection against infection and any subsequent onward transmission of infection.”
@DHSCgovuk June 2025

WHO is in charge??? Because this is completely wrong
“In line with JCVI advice, frontline health & social care workers (HSCWs) & staff working in care homes for older adults will not be eligible for COVID-19 vaccination under the national programme for autumn 2025” @DHSCgovuk
@theRCN @TheBMA
what are you going to do about this?
@DHSCgovuk @theRCN @TheBMA “This is following an extensive review by JCVI of the scientific evidence surrounding the impact of vaccination on transmission of the virus from HSCWs to patients, protection of HSCWs against symptoms of the disease & staff sickness absences”

…We have staff off with Covid now
Read 9 tweets
Prognostic Chats Profile picture
Jun 25
It’s 2025 so you all know
- Covid is airborne
- It lingers in the air for hours & that means you will breath in the virus after the infectious person has gone
- 1 way masking isn’t as good as 2way masking
- opening a window helps but doesn’t just fix it
- you can get it outdoors
- if you are sharing the air with an infectious person you are at risk, this includes within households & outdoors (airborne, not roomborne)
- duration of exposure generally matters
- mitigations are all layers that will help, some more so, no single one is the entire answer
- a positive test means stay away
- a negative test doesn’t necessarily mean you don’t have it (false negatives are well recognised)
- testing therefore has a positive predictive value, but a lower negative predictive value
- test may not turn positive until well into infection
Read 7 tweets
Prognostic Chats Profile picture
May 29
The “reality” now may be that people are trying to live life as if Covid doesn’t exist or is of no real significance
BUT the problem is that isn’t reality. Covid does exist & it’s still killing & disabling people in large numbers.
This is a crucial point 🧵
The “reality” of society adopting mass denial does nothing to mitigate the continued impacts of Covid infections.
Just because people do something, it doesn’t mean it’s right. Very often what people do is the easiest thing & it’s often wrong…
There is a huge difference between the “reality” of social behaviour & the reality of what is actually going on that requires an entirely different social behavioural response.

In this case that would be shifting social behaviour to actually respond to realty. To live with Covid
Read 5 tweets
Prognostic Chats Profile picture
May 26
Most doctors I know don’t realise the UK government stopped counting & reporting Covid deaths ages ago (zero community data), that they’ve never recorded long Covid numbers & they’ve no idea of the impact of reduced testing ie confirmation bias that numbers must be lower now…
They also have no idea what excess deaths are, the fact they’ve been high throughout the whole pandemic so far, or how ONS have shifted their baseline for this year so excess deaths now include the Covid associated deaths, again offering confirmation bias that everything is ok
This allows most doctors who want to live in denial to more easily do so, as we never get any figures on acute deaths, true admission numbers, numbers testing positive, or chronic impacts like long Covid or excess all cause mortality. Easier to pretend it isn’t happening.
Read 6 tweets
Prognostic Chats Profile picture
May 7
"During draft guidance consultation, consultees highlighted the treatment gap for children. At the second evaluation committee meeting one clinical expert explained that COVID‑19 rarely makes children unwell" NICE Covid Guidance 2025

How can an “expert” say this???
Study; Children’s cardiac risks from Covid💔

‘children & adolescents are at statistically SIGNIFICANT increased risk of hypertension, ventricular arrhythmias, myocarditis, heart failure, cardiomyopathy, cardiac arrest, clots, chest pain, & palpitations’

medrxiv.org/content/10.110…
Study 2; Rates of LC for children;
“12%-16% of those infected with Omicron met the research definition of long COVID at 3 & 6 months after infection, with no evidence of difference between cases of 1st positive & reinfected”

pmc.ncbi.nlm.nih.gov/articles/PMC10…
Read 9 tweets
Prognostic Chats Profile picture
May 6
Study shows “mild” Covid infection causes PERSISTENT brain damage;

“These findings indicate that even mild COVID-19 can result in persistent neurocognitive deficits, structural brain alterations, & functional network abnormalities, both in individuals with & without brain fog” Image
Brain fog isn’t benign. It’s brain damage.
The study shows even a so called “mild” Covid infection causes reduction in brain size (with damage to multiple areas of your brain as a result).
The study: sciencedirect.com/science/articl…
The areas affected may tell us a lot, because every human on this planet is getting recurrently infected & this brain damage is permanent, so let’s look at the areas of the brain being damaged 🧵
Read 6 tweets

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