Prof Peter Hotez MD PhD DSc(hon) Profile picture
Texas Medical Center (TMC) Professor-Vaccine Scientist-Author; Member, Philosophical Society of Texas and TAMEST; Dallas Morning News Texan of the Year 2022
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Jan 20 7 tweets 2 min read
1/n Once again here are some key articles on how the SARS-2 virus (Covid-19) causes heart disease (it’s a thromboembolic virus) and evidence that vaccinating vs Covid protects your heart nature.com/articles/s4416… 2/n nyulangone.org/news/study-hel…
Jan 6 4 tweets 2 min read
Many thanks ⁦@KatyTurNBC⁩ for hosting me on ⁦⁦@MSNOWNews⁩ as i explain the 6 vaccines that DHHS no longer recommends including the meningococcal vaccines, explaining what happens when a child gets meningococcal septicemia and meningitis… Image Once Neisseria meningitidis gets into the bloodstream it causes purpura fulminans leading to limb gangrene and amputation, it causes renal failure, and meningitis with permanent neurological deficits, also high mortality. And this is the disease the chuckleheads at DHHS want to bring backImage
Jan 5 4 tweets 1 min read
1/n The article says that they want to take away 6 vaccines by no longer "recommending them" but rather to give them through "shared decision making." This is total nonsense. In my pediatric residency in Boston in the 1980s, all vaccines were administered through shared decision making. Our training was all about explaining to parents the benefits of vaccines vs. the risks of the diseases they're designed to prevent. 2/n Here's what this is about: It's now almost a weekly ritual from DHHS to throw out some new public effort to undermine public confidence in the necessity, effectiveness, or safety of vaccines. One week it's saying MMR is "leaky," or declines in immunity, or contaminated, list goes on...
Sep 21, 2025 11 tweets 3 min read
1/n Trump admin set to tie Tylenol to autism risk, officials say…but my view: the published evidence is not very compelling with largest study finding no association, and a systematic review showing some studies linking it other not. This needs reframing washingtonpost.com/health/2025/09… 2/n before I start, here’s a large study of 2 million Swedish kids done at the renowned @karolinskainst showing no association in @JAMA_current jamanetwork.com/journals/jama/…
Aug 29, 2025 5 tweets 2 min read
1/n Watching more Dept HHS wellness/influencer autism pseudoscience infiltrate RFK Jr’s public remarks + the recent tragic and fact-free White House press conference. Most of this I debunked in a previous book, written during/after a year of unproductive discussions with the guy Image 2/n the major points:

1. We have a good understanding of the neurodevelopmental basis of autism operating through dozens of autism genes (including Rachel’s) active in early pregnancy .sciencedirect.com/science/articl…
Aug 6, 2025 7 tweets 2 min read
1/n When you actually bother to read the HHSBARDA statement you realize how untethered from reality he has become, MAHA pseudoscience. For instance this statement below touting benefits of whole inactivated virus vaccines for serious respiratory infections hhs.gov/press-room/hhs…Image 2/n so instead of mRNA which can be quickly adapted to emerging pandemic threats he’s going to combine multiple whole inactivated viruses and load them up with TLR agonists as adjuvants. What will that do? Well first it’s unreliable bc you never know what viruses will grow in…
Jul 1, 2025 5 tweets 2 min read
They’re wrong. Vaccines don’t cause autism. They just don’t. As the book about my daughter details:
1. Extensive published scientific evidence showing no link
2. Lack of plausibility based on the autism genes in early fetal brain development
3. Brain assembloid studies Image Watch out for antivaccine activists. They don't care about you. They don't care about your family. They have another agenda.
Jun 11, 2025 20 tweets 6 min read
1/n The reality: since Mr. Kennedy became HHS Secretary he/staff have waged a war of antivaccine disinformation against the American people on a frequent/regular basis. He did this as U.S. experienced its worse measles epidemic in years, showing zero concern for our health/safety 2/n Here I will list what I consider are some of his worst public statements and acts, it may take me a day or so to get through it all, I hope it’s a useful reference.
May 23, 2025 8 tweets 3 min read
1/n My articles and interviews on the overlap between antiscience and antisemitism, accelerating during the pandemic but going back to the 14th century Image 2/n molmed.biomedcentral.com/articles/10.11…
May 20, 2025 5 tweets 2 min read
Many thanks @BBCWorld for hosting me today to discuss new FDA guidelines for annual COVID immunizations and boosters, including a shift away from universal immunization recommendations to those >65 or a list of underlying health conditions as detailed in @NEJM Image My concern is that the new recs are based only on acute sequelae including case fatality rates and hospitalizations, but ignore the chronic consequences such as long COVID or thromboembolic complications that can occur even in well adults and teens Image
Apr 14, 2025 9 tweets 2 min read
But this js false, there are multiple studies comparing vaccinated vs unvaccinated, I will list a few nejm.org/doi/10.1056/NE…
Apr 13, 2025 5 tweets 2 min read
My latest in PLOS Biology: it’s not as dark as you might think, there are still lots of opportunities, but they require strategy, long-term planning, openness to the realities that things will be different. Here are some ideas

journals.plos.org/plosbiology/ar…Image Image
Mar 5, 2025 8 tweets 3 min read
1/n Being about the role of Vitamin A and its role in the treatment and prevention of measles. It’s actually an interesting story, but unfortunately one that is being twisted and weaponized by the wellness/influencer $multibillion to push vitamin A like they did for ivermectin 2/n it starts from an interesting findings 1970s/80s that kids in low-income countries with malnutrition and vitamin A deficiency (and xeropthalmia) had higher mortality from infection. Al Sommer an ophthalmologist from @JohnsHopkinsSPH led those studies

thelancet.com/journals/lance…
Feb 14, 2025 4 tweets 2 min read
Disastrous measles epidemic in my state of Texas now up to 48 in 4 counties: my chart on what happens when children acquire measles vs a very safe and effective MMR vaccine. From my new paper in @PLOSGPH Image Here’s the link to my paper journals.plos.org/globalpubliche…
Feb 4, 2025 6 tweets 2 min read
Long COVID impacting more than 1 million children: CDC study suggests. Also a reason why it was important to vaccinate kids vs COVID. It wasn’t only about deaths and hospitalizations. Covid vaccines reduce the risk of long Covid. Papers attached abcnews.go.com/Health/long-co… publications.aap.org/pediatrics/art…
Jan 28, 2025 9 tweets 3 min read
1/n I’ve been writing/speaking about a growing convergence between antiscience & antisemitism. Not only on X, but also emails sent to me, swastikas mailed to my home.

2 major themes:

1. The “plandemic” that we made the SARS-2 virus or H5N1

2. Covid vaccine is the “Jew Jab” Image 2/n Lots of disturbing images and often Nazi imagery in the shape of vaccine syringes or masks, such as those mailed to my home X2 or distorted images of Jews in biosafety suits Image
Jan 14, 2025 7 tweets 3 min read
1/n But remember: the risk of myocarditis after Covid infection is much higher than it is following vaccination, and it’s not just myocarditis it’s also heart attacks and strokes. So Covid vaccination is an important way to protect your heart health

pmc.ncbi.nlm.nih.gov/articles/PMC95…. x.com/nichulscher/st…Image 2/n

. heart.org/en/news/2024/1…Image
Jan 3, 2025 9 tweets 3 min read
PolitiFact | Yes, there have been placebo-controlled studies on childhood vaccines. Good article by ⁦@PolitiFact⁩ FYI I recently did a PubMed ⁦@NLM_NIH⁩ search on placebo-controlled RCT and other trials approved for vaccines. Lists attached politifact.com/factchecks/202… This is what I found for MMR vaccine, this is not intended to be comprehensive, but to debunk the idea that there are no such trials. You can do this yourself, it’s an open access database and just takes a minute. There are many, in fact: Image
Dec 29, 2024 4 tweets 1 min read
H5N1 not a reason to be terrified. We know a lot about zoonotic flu, have been preparing for it 20 yrs (unlike when COVID began), + we have candidate vaccines, antivirals, diagnostics

Only 3 things can negate this:

policy failures
pandemic denialism
antiscience disinformation It was actually the leadership of the W Bush Admin that prioritized a national response to zoonotic flu in 2000s, recruited my mentors, like DA Henderson, Maj Gen Phil Russell, Stewart Simonson, WI Gov. Tommy Thompson, Mike Osterholm, Bruce Gellin, Peggy Hamburg, to name some
Nov 10, 2024 5 tweets 2 min read
Another reminder: in U.S. we must now expect a regular cadence of pandemic threats: SARS in 2002, SARS-2/Covid in 2019, likely SARS-3; avian flu; Nipah; Ebola 2014, 2019; Zika 2016, soon dengue, YF. So we can’t screw around, the Trump Admin needs serious players for CDC, FDA, NIH The Trump Administration and the Republican-led Congress must take this seriously. If we’re going to have a chance vs this onslaught of pandemic threats - and they are coming - we cannot waste time with ideologues, lightweights, propagandists, and antivaccine activists
Sep 24, 2024 7 tweets 2 min read
1/n I’m concerned: the health disinformation empire has begun accelerating with this new RFK Jr GOP partnership, also worried about the muted/invisible response from our U.S. HHS agencies, health professional societies/academic health centers. Troubling pics in this thread… Image 2/n …and this Image