Hannah Davis Profile picture
Jan 22, 2023 10 tweets 3 min read Read on X
I've debated for a long time about being public with this, bc it's heavy & I still haven't come to terms with it. But I have a rare pre-COVID datapoint so will do it, hoping it helps people:

Right before I got COVID, I did neuro testing to see if I had ADHD.

1/ #LongCovid
My processing speed was in the 96th percentile (meaning it was higher than 96% of people who took the test).

After I got COVID and my brain issues started, I did the same testing with the same provider, and my processing speed had dropped to the 14th percentile. #LongCovid

2/ test results showing a drop...
Having low processing speed affects everything. It impacts basic communication with people, like texting & talking. Not only how long it takes to actually communicate, but how much you ingest about what you are reading/hearing. Relationships become hard to maintain. #LongCovid
3/
Things like driving - where you *have* to make fast decisions - are much scarier & often not possible at all. Common sense decision-making - like putting on potholders to take something out of the oven - are related to processing speed too, & are scary to find suddenly absent. 3/
Processing speed impacts memory, because it impacts how fast you can register memories. It impacts emotional awareness & how fast it takes to know how you're feeling. The downstream impacts of having suddenly lower processing speed affect identity in a serious way. #LongCovid

4/
Processing speed impacts how much you can hold in your head, how you weave the world together and make sense of it, the thoughts that come up when you think about the people, places, ideas that you love. It turns those processes into just a void, a blank wall. #LongCovid

5/
Intelligence tests aren't ideal & are rooted in problematic ideas, so I'm not suggesting they are key. But these processing speed drops are substantial & happening to many with #LongCovid, esp those with new ME/CFS, which has processing speed deficits as part of the illness.

6/
This is still happening to so many people, despite vaccination, despite pretending like the pandemic is over. The public deserves to know the actual risks of what can be lost.

7/
My tangible ask of people reading this: please continue to mask, or start again if you've stopped, & please implement ventilation protocols where you have power to do so (including your own homes), & please stay home when you're sick, even if you test negative for COVID.

8/
One thing I’ll add to this: these were full neurological evaluations, and both tests showed no anxiety or depression.

9/

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More from @ahandvanish

Nov 27
Excellent new paper by Tim Henrich et al on the bacterial, fungal, and viral infections & reactivations associated with #LongCovid.

"Various viral, bacterial, and fungal co-infections may induce or facilitate the development of PASC."



1/pmc.ncbi.nlm.nih.gov/articles/PMC12…
44 countries have experienced a 10-fold increase in at least 13 infectious diseases compared to pre-pandemic rates, including RSV, cholera, measles, influenza, chickenpox, tuberculosis (TB), and others. 2/ map of the world centered on Africa and Europe, showing spikes in multiple different diseases
While some (like TB) may be related to declining vaccination rates, COVID impacts the others.

"Immune mechanisms [like] a period of increased vulnerability to other infections following acute COVID infection" is a major contributor, esp irt respiratory infections in children 3/
Read 11 tweets
Nov 14
Going to try to tweet the next sessions as I can until I get crashy! #LongCovid
Michael Peluso (@MichaelPelusoMD) introduces CHIIME, which adds an arm of ME/CFS patients to the LIINC study - will include PET imaging and tissue biopsy analysis, gut biopsies: Image
Phenotyping with patient-reported and objective clinical measures: Image
Read 48 tweets
Oct 12, 2024
Incredible visit Thursday to the opening of Mount Sinai’s Cohen Center for Recovery from Complex Chronic Illness, led by the renowned @PutrinoLab! #LongCovid 1/ Sign that says Cohen Center for Recovery from Complex Chronic illness
David Putrino in the center, masked, showing off tools used for metabolic and mitochondrial dysfunction
The Center is incredible and truly blew me away - designed on so many levels with patients in mind, with top notch care, using many of the most advanced tools available 2/
Some of the many tools patients are assessed with include:

-EndoPat (endothelial dysfunction)
-tilt table (dysautonomia)
-transcranial Doppler (cerebral blood flow)
-machine that identifies metabolic & mitochondrial dysfunction
-eeg & cognitive battery

3/
Read 8 tweets
Aug 28, 2024
Major paper! The team found that fibrinogen (which converts to fibrin):

-binds to spike
-forms clots + neuro issues
-acute stage fibrinogen = predictive biomarker of #LongCovid cog dysfunction!
-suppresses natural killer (NK) cells (which clear virus!)
1/nature.com/articles/s4158…
The fibrin also:
-promotes neuroinflammation & neuronal loss post infection
-promotes innate immune activation in the brain & lungs independent of active infection
-downregulated JAK-STAT pathway & targets of p38 MAP kinase, pathways that regulate NK cell activation #LongCovid 2/
They used a monoclonal antibody targeting the fibrin domain, and found it protected against microglial activation & neuronal injury, as well as from thromboinflammation in the lung after infection! #LongCovid 3/
Read 5 tweets
Jul 11, 2024
I've been doing #TheNicotineTest (via 7mg patches) for a month now & it has greatly improved my quality of life.

Major caveat: I'm on ivabradine. The nicotine increases heart rate, & I wouldn't recommend to anyone w POTS who isn't on beta-blockers or ivabradine. #LongCovid 1/
The biggest change is feeling like I have more *oxygen* circulating in my body - the weird altitude-sickness feeling is lessened.

Major improvements to cognition/awareness (esp executive functioning & processing), and improved physical capacity and overall baseline. 2/
The first tolerance break I felt more air hunger and worse baseline than pre-nicotine, but every other tolerance break has been equal or better than pre-nicotine.

It feels like an excellent symptom management tool, but *not* a cure. 3/
Read 7 tweets
May 1, 2024
From the Conference of Retroviruses & Opportunistic Infections: persistence of Covid in megakaryocytes in #LongCovid.

Over my head, but my understanding: megakaryocytes (type of bone marrow cell) being infected = continuous infection, very serious!

1/ croiconference.org/wp-content/upl…
graph showing levels of circulating Megakaryocytes; very low for healthy controls, high for severe Covid and Long Covid
This could cause additional impacts like deficits in platelet energy metabolism, or hormonal dysregulation (because platelets carry serotonin) #LongCovid

More about this here from the amazing @polybioRF!

2/polybio.org/projects/sars-…
The study found:

-circulating megakaryocytes harbored Spike, SARS-CoV-2 ssRNA, & dsRNA in #LongCovid patients

-these produced platelets containing Spike & SARS-CoV-2 ssRNA 3/
Read 5 tweets

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