Eric Topol Profile picture
Aug 18, 2020 4 tweets 4 min read Read on X
The path to herd immunity is not through the herd.
It's via a vaccine
The path for #SARSCoV vaccine-induced immunity is very encouraging. New summary by @heidiledford @NatureNews
nature.com/articles/d4158…
Main concern is duration rather than "Plan B and T" kicking in.
A review of 4 preprints + recent @karolinskainst T cell @nature paper @Dereklowe on the solid immune response
blogs.sciencemag.org/pipeline/archi…
"What we’re seeing is that this virus... is also something that our immune systems are dealing w/ in the just the way that you would hope to see"
Perhaps the most interesting, novel one is this on the durable IgA mucosal immune response
medrxiv.org/content/10.110… by @uoftmedicine @UofT @baweletaisho and colleagues ImageImage

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More from @EricTopol

Oct 19
An elegant @Nature study by @AkassoglouLab has illuminated our understanding of the role of fibrin (component of blood clots), #SARSCoV2, and brain inflammation in Covid and #LongCovid.
This discovery and more in the new Ground Truths podcast, with transcript, key figures (such as as the one below) and citations. Open-access. Link in my profile.Image
Image
A clip from our conversation. Unknowingly, @AkassoglouLab was gearing up for understanding this complex pathophysiology for many years before Covid hit
For treatment, it's not just as simple as preventing fibrin clots. It's isolating the pro-inflammatory action of fibrin, targeted by the antibody
Read 4 tweets
Oct 9
Covid and increased risk of major adverse cardiovascular events (MACE) 3-years out

2-fold increased for any severity of Covid
~4-fold increase for Covid requiring hospitalization
"a coronary artery disease equivalent"
interaction with non-O blood types
@uk_biobankahajournals.org/doi/10.1161/AT…Image
"A major finding from our analyses was that the risk
of MACE among the subset of hospitalized COVID-
19 cases without known CVD (ie, primary prevention
patients) was comparable to (or even slightly higher than) the risk in patients with CVD, PAD, or diabetes but without COVID-19."
"one of the first examples of a gene-pathogen exposure interaction for thrombotic events"
I think it's the first one documented, likely others to be unraveled
Read 4 tweets
Aug 2
New US Covid genomic surveillance
The KP.3.1.1 variant is on the move to become dominant, more of a challenge to our immune response than KP.3 and prior variants (especially without new KP.2 booster when we need it for high-risk individuals) Image
It's the deletion 31/31 that makes the KP.3.1.1 spike different, but otherwise 2 mutations away from KP.2 (R346T and Q493E) Image
Buckle up; this wave isn't over yet d/t KP.3.1.1's emergence
Read 4 tweets
Jul 21
The new boosters (vs. KP.2) should be available the first week of September. It takes ~90 days make them from the FDA decision on June.

But it didn't have to be that way.......1/5nbcnews.com/health/health-…
We've known about KP.3's marked growth advantage since April and could have made the call then to make the new booster. That would have been aligned well with the current wave (available in July) 2/5 erictopol.substack.com/p/are-we-flirt…
Image
But the FDA has tried to force fit Covid into an annual shot like flu, even though all data tells us it doesn't follow an annual pattern. Even the CDC acknowledges this now
3/5cdc.gov/ncird/whats-ne…
Read 5 tweets
Jun 21
New CDC genomic data shows continued rise of the KP.3 variant that accounts for 1 of 3 Covid cases.
LB.1 is gaining, too, as JN.1 fades away Image
This variant growth advantage plot by @BenjMurrell (H/T @siamosolocani) shows why this is the case. Note KP.3 is the one at far left w/ almost 3-fold advantage to JN.1.
Reinforces why the decision to develop the KP.2 vaccine booster (instead of JN.1) was a good one Image
Spike mutation map to show the differences betweem KP.3 and JN.1 (and LB.1, KP.2) Image
Read 4 tweets
May 16
The connection between #SARSCoV2 and neurodegeneration
@TheLancetNeuro
Quotes below:
1. SARS-CoV-2 infection should be considered as a risk factor for Alzheimer’s disease, even though the distinction between causation versus disease acceleration is not clear.thelancet.com/journals/laneu…Image
2. Inflammation in patients with COVID-19, and controlled experiments show prolonged neuro-inflammation after mild SARS-CoV-2 infection
in macaques.
3. A direct correlation has been reported
between prior SARS-CoV-2 infection and increased risk
of Alzheimer’s disease (figure).

4. So far, the estimated lifetime cumulative risk of dementia due to hospitalisation for any viral infection is 1·48 (95% CI 1·15–1·91).
Read 5 tweets

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