Sign in

Mady Hornig, MA, MD

@mhornig.bsky.social
1.3K followers 1.4K following 43 posts

Translational MD-scientist, mom, 🎶 | Bklyn born + bred Pathogen/microbe-host interactions + 🧠outcomes across the life course | gut-immune-🧠 axis #ASD #ADHD #PANS/#PANDAS #OCD affective disorders/#TRD Alzheimer’s #MECFS #LongCOVID All posts = my views

PostsRepliesMedia
Reposted by Mady Hornig, MA, MD
Trish Greenhalgh @trishgreenhalgh.bsky.social · 12/05/2026
OUR NEW BMJ editorial: Andes virus should reset WHO’s default approach to airborne risk. 🧵 1/ For severe pathogens with person-to-person transmission, the starting point should be precautionary airborne protections — not waiting for definitive proof after spread occurs. www.bmj.com/content/393/...
bmj.com
16685319
Reposted by Mady Hornig, MA, MD
Physicians for a Healthy Democracy @physiciandemocracy.medsky.social · 03/10/2025
www.nyc.gov/site/doh/cov... #medsky
The only way to prevent long COVID is to avoid getting COVID19.  With every infection, there is a risk of developing long COVID.
222787
Reposted by Mady Hornig, MA, MD
Jon Douglas @atranscendedman.bsky.social · 26/09/2025
Long COVID (and life) teaches you this. Research imagines what medicine could be, but medicine often shrugs. The best doctors chase the questions. The worst don’t even look up.
0184
Mady Hornig, MA, MD @mhornig.bsky.social · 26/09/2025
bsky.app/profile/mhor...
010
Mady Hornig, MA, MD @mhornig.bsky.social · 26/09/2025
Important new work from @leorahorwitzmd.bsky.social + NIH RECOVER (incl my son Max 🥰). Link👇 Nearly 80% of those with self-reported change in/loss of sense of smell after SARS-CoV-2 infection were found to have ↓ olfactory function on formal testing. Rate ↑ but not entirely unexpected.
162
Reposted by Mady Hornig, MA, MD
Tom Kindlon @tomkindlon.bsky.social · 24/09/2025
The NIH in the US have highlighted a recent ME/CFS study they funded: "Overactive immune responses in ME/CFS" www.nih.gov/news-events/... #MyalgicEncephalomyelitis #ChronicFatigueSyndrome #MEcfs #CFS #PwME @mhornig.bsky.social
NIH logo

Home  News & Events  NIH Research Matters
September 23, 2025

Overactive immune responses in ME/CFS
At a Glance
Researchers found signs of overactive immune responses in people with myalgic encephalomyelitis/chronic fatigue syndrome, or ME/CFS.
The findings provide insights into the causes of ME/CFS and suggest new treatment approaches.

ME/CFS involves unexplained fatigue that may worsen after exertion and cause problems with thinking and memory that lasts at least six months. People with ME/CFS often report symptoms consistent with infection before developing ME/CFS. Yet no single microbe has been found to be responsible. This suggests that ME/CFS may be caused by a more general immune response to infection.

To test this idea, a research team from several institutions, led by Dr. W. Ian Lipkin at Columbia University Mailman School of Public Health, collected blood samples from
13011
Mady Hornig, MA, MD @mhornig.bsky.social · 23/09/2025
Great to speak w/@jasongale.bsky.social to add much-needed depth back into the still-unfolding story of autism pathogenesis. Hopefully helps to course-correct Monday's WH presser, which put forth clinical guidance many find worrisome + dangerous for pregnant women + their developing offspring.
040
Reposted by Mady Hornig, MA, MD
Christophe Veltsos @drinfosec.bsky.social · 07/09/2025
🚨🧵 by @david.notesforfriends.com about Covid's damage & a cigarette metaphor: "Your Body Is Keeping Score Here’s the thing nobody gets: COVID doesn’t give a shit about your positive thinking. It’s not checking your Instagram to see..." Full🎯thread here: threadreaderapp.com/thread/19645...
COVID Isn’t a Cold. It’s Cigarettes All Over Again

The Damage Is Everywhere – That Is the Definition of Long COVID

Look, we’ve been here before.
My grandpa smoked two packs a day for most of my memory of him. Everyone did. Doctors literally prescribed cigarettes for stress. They said it was good for you. Made you look cool. Helped you lose weight. Whatever.

He felt fine until he didn’t.

That’s exactly what’s happening with COVID right now, and nobody wants to hear it. People are catching this thing two, three times a year and acting like it’s nothing. Just a cold. Just the sniffles. Meanwhile, their blood vessels are getting shredded. Their organs are taking hits. Their brains are leaking....

More at the link in the main post
37022
Mady Hornig, MA, MD @mhornig.bsky.social · 05/05/2025
Not just scientists and universities anymore: threat to nonprofits: insurance companies are cancelling insurance because of environmental advocacy eedition.timesunion.com/infinity/art...
eedition.timesunion.com
Audubon chapter gets surprise insurance cancellation
Audubon chapter gets surprise insurance cancellation
040
Reposted by Mady Hornig, MA, MD
George Takei @georgetakei.bsky.social · 24/04/2025
When the moment came, Harvard didn’t hedge or flinch—it stood up. A reminder that integrity isn’t complicated, it’s just rare.
584371408028
Mady Hornig, MA, MD @mhornig.bsky.social · 14/04/2025
Jesse Welles delivers one more time what you’ve probably been trying to put into words… RED #singersongwriter #country #folk #song 👇👇👇
120
Mady Hornig, MA, MD @mhornig.bsky.social · 10/04/2025
"Driving under viral impairment" ▶︎ #SARSCoV2 PCR positivity rates (CDC) associated w/car crashes: OR 1.25 [1.23-1.26] ▶︎ independent of Long COVID status/vaccination status ▶︎ risk analogous to driving impairment w/EtOH at legal limits dx.plos.org/10.1371/jour...
dx.plos.org
Driving under viral impairment: Linking acute SARS-CoV-2 infections to elevated car crash risks
This study explores the linkage between acute SARS-CoV-2 and car crashes across U.S. states, correlating with COVID-19 mitigation strategies, vaccination rates, and Long COVID prevalence. This investi...
820447
Mady Hornig, MA, MD @mhornig.bsky.social · 29/03/2025
h/t Collab for Health & Environment @che-healthenv.bsky.social Lawyers for Good Government is providing legal advice/support for all qualifying federal grantees w/funding at risk. 1:1 consultations pro bono to EPA, USDA, DOE grantees. See: www.lawyersforgoodgovernment.org/fund-protect...
lawyersforgoodgovernment.org
Fund Protection Legal Guidance Request — Lawyers for Good Government
082
Reposted by Mady Hornig, MA, MD
Carl T. Bergstrom @carlbergstrom.com · 17/03/2025
1. Today in Santa Barbara I saw an extraordinary abstract art piece—or so it seemed—from Hank Willis Thomas. As we speak, Trump seeks to erase large swaths of our history, attempting to erase the most shameful parts of our history, and paint over the triumphs and sacrifices of people of color.
Art piece with an American flag, slashes of paint, and large white splotches.
336093
Mady Hornig, MA, MD @mhornig.bsky.social · 16/03/2025
For context, as we extend past 5 years from the start of the pandemic: Although some findings in Long COVID are reminiscent of the illness duration effect we found in ME/CFS 👇, immune analyses over time in rigorous prospective, long-term studies of Long COVID are imperative to pursue now.
1154
Reposted by Mady Hornig, MA, MD
Mark Igra @markigra.sciences.social.ap.brid.gy · 15/03/2025
DOGE/SSA marked this person dead and *removed his savings from his bank account,* cancelled his social security and Medicare. #seattle www.seattletimes.com/seattle-news/p…
The Seattle Times
"There's nothing you need to do - we've deducted the funds from LEONARD A.
JOHNSON's account."
Uh oh. It itemized how $5,201 had been stricken from their bank account, on the grounds that Ned wasn't justified to get those benefits - because he was dead.
That was for payments he'd received in December and January.
Ned found that his February Social Security check hadn't been paid, and he's yet to receive his March check, either. His Medicare insurance had been canceled.
He also learned that when you die, your credit score gets marked as "deceased, do not issue credit," which makes it tough to get a loan.
23374553840
Reposted by Mady Hornig, MA, MD
Aaron Rupar @atrupar.com · 13/03/2025
Walz: "The idea that the secretary of education would not know what IDEA is -- individuals with disability in education act -- that's like your mechanic not knowing how to put air in your tire. And she's in charge of this nation's education progress. It is catastrophic."
735346619647
Reposted by Mady Hornig, MA, MD
Art Candee 🍿🥤 @artcandee.bsky.social · 09/03/2025
AOC: "It's not just that Trump is corrupt. It's that everyone participating in this is corrupt. Elon is corrupt. Jeff Bezos is corrupt. Mark Zuckerberg is corrupt." 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥
15965041991
Reposted by Mady Hornig, MA, MD
California Dreamin’… 😎 @jerasikehorn.bsky.social · 07/03/2025
What a wonderful idea…👇 Let’s. Do. This. ✨
14525237014193
Reposted by Mady Hornig, MA, MD
Ardem Patapoutian @ardemp.bskyverified.social · 23/02/2025
In case you were wondering how Fox News is covering the proposed cuts at the NIH:
1215147
Reposted by Mady Hornig, MA, MD
PLOS Biology @plosbiology.org · 21/02/2025
PLOS has issued a statement on recent US Executive Orders and scientific integrity. We are determined to stand firmly behind our mission, our values and our principles, and against any attempt at censorship or undermining of the core principles of scientific inquiry. plos.io/3D4O8cH
plos.io
PLOS statement on recent US Executive Orders and scientific integrity - The Official PLOS Blog
Since its founding over twenty five years ago PLOS has been dedicated to advancing open science, ensuring that knowledge is accessible to…
291113436
Reposted by Mady Hornig, MA, MD
Katie J. @kjohnstone.bsky.social · 21/02/2025
There's a wonderful letter to Cochrane about their outdated and harmful review of exercise as a treatment for ME/CFS, organised by @davidtuller1 and signed by a group of experts. virology.ws/2025/02/20/t...
virology.ws
1134
Mady Hornig, MA, MD @mhornig.bsky.social · 20/12/2024
Great 🧵by @leorahorwitzmd on the new JAMA ppr on 2024 update to #NIHRECOVER #LongCOVID index. Also listen to her incisive presentation on the podcast (see🔗👇). Great to work w/this group as we strive to refine understanding of this disabling disorder's clinical manifestations
0103
Reposted by Mady Hornig, MA, MD
Billy Hanlon @bhanlon15.bsky.social · 18/12/2024
12/18, JAMA: “2024 Update of the RECOVER-Adult Long COVID Research Index” Linda N. Geng, MD, Kristine M. Erlandson, MD, Mady Hornig, MA, MD et al. jamanetwork.com/journals/jam...?
jamanetwork.com
2024 Update of the RECOVER-Adult Long COVID Research Index
This prospective, observational cohort study uses data from the Researching COVID to Enhance Recovery adult cohort to assess post–COVID-19 condition (or long COVID) with additional participant data an...
2102
Mady Hornig, MA, MD @mhornig.bsky.social · 26/11/2024
OK #oncsky: 45+y ago Koprowski proposed CA19-9 as part of #PDAC screening armamentarium. Yet few pubs on clinical f/u of assay discordance. 👇 (*same* hosp sys; no known clin correlate): Siemens assays consistently ↑↑ (mid-triple digits) Beckman assays consistently normal Which assay do you trust?
CA19-9 discordance by immunoassay:
Siemens chemiluminometric assay consistently high (mid-triple digits)
Beckman DxI consistently normal range (<<<cutoff)
020
Reposted by Mady Hornig, MA, MD
Physicians for a Healthy Democracy @physiciandemocracy.medsky.social · 24/11/2024
6006639714896
Reposted by Mady Hornig, MA, MD
ramyisback1989.bsky.social @ramyisback1989.bsky.social · 13/11/2024
I am only at 81 followers 🥲 Can you guys re-post this so I can reconnect with more people here. It's me, Ramy 👋
93731
Reposted by Mady Hornig, MA, MD
Aaron Rupar @atrupar.com · 17/11/2024
Make America Healthy Again lasted less than a Scaramucci
2787582487920
Reposted by Mady Hornig, MA, MD
It's ME(Jaime) @exceedhergrasp1.bsky.social · 15/11/2024
HUGE THANKS 🏆 to everyone who has signed so far! We're at ✨8300 signatures✨-- can you help get us to 10k? This petition closes TODAY so please sign and share, not just here but w/your networks!
16943
Mady Hornig, MA, MD @mhornig.bsky.social · 14/11/2024
Hey @support.bsky.team after successfully managing to get #medsky labels removed, my profile now suddenly states “Invalid handle” instead of showing the handle. How to fix?
110
Reposted by Mady Hornig, MA, MD
Brett Meiselas @bmeiselas.bsky.social · 14/11/2024
I'm just not so sure the presidency and the position of attorney general were meant to be safe havens for people trying to avoid prison time
355170562671
Mady Hornig, MA, MD @mhornig.bsky.social · 13/11/2024
Thx for the heads up @erictopol.bsky.social Really 🙏 to see this attention to #LongCOVID. The cover art suggests to me not only the burden shouldered by patients/those who care for them but the weighty challenges posed to our medical/scientific communities as well. May the momentum be sustained…
210427
Reposted by Mady Hornig, MA, MD
Jack A Gilbert @gilbertjacka.bsky.social · 11/11/2024
Sustainable Microbiology (doi.org/10.1093/sumb...) The ISME Journal (doi.org/10.1093/isme...) mSystems (doi.org/10.1128/msys...) FEMS Microbiology Ecology (doi.org/10.1093/fems...)
doi.org
Microbial solutions must be deployed against climate catastrophe
This paper is a call to action. By publishing concurrently across journals like an emergency bulletin, we are not merely making a plea for awareness about
085
Mady Hornig, MA, MD @mhornig.bsky.social · 12/11/2024
“Our study of #MECFS symptoms in two cohorts with different recruitment strategies demonstrates that…a clinically significant group of individuals with #LongCOVID exhibit a phenotype consistent with #MECFS” www.medrxiv.org/content/10.1...
medrxiv.org
Post-SARS-CoV-2 Onset Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Symptoms in Two Cohort Studies of COVID-19 Recovery
Objective To determine how many people with long COVID also meet diagnostic criteria for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). Methods We identified which participants with lon...
24516
Mady Hornig, MA, MD @mhornig.bsky.social · 10/11/2024
Mortality ⬆️ and #LongCOVID: what might the mechanisms be? What targets might help prevent/mitigate? Let’s keep The Conversation (@theconversation.bsky.social) going *and* the rigorous interrogations expanding
040
Reposted by Mady Hornig, MA, MD
Ben_no @ben-no.bsky.social · 11/09/2023
#LongCovid is added to list of autoimmune-illnesses by #autoimmunRegistry #rheumatic #autoimmune www.autoimmuneregistry.org/long-cov…
autoimmuneregistry.org
Long COVID Added to List of Autoimmune Diseases — The Autoimmune Registry
At the Autoimmune Registry, we publish a list of over 100 confirmed and suspected autoimmune diseases. While scientists don't yet fully understand the mechanism behind long Covid, many suspect it to...
0105