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Eric Feigl-Ding Profile picture
@DrEricDing
Oct 22, 2021 • 14 tweets • 6 min read • Read on X
BEST BOOSTER? Mix it up — but depends which you had first. Switching vaccine for the booster seems to be the best—Pfizer to Moderna booster, Moderna to Pfizer for booster, and J&J should switch to Moderna / Pfizer booster. HT to @ScientistSwanda. #COVID19 #BoosterShots #vaccinate Image
2) Vaccine efficacy and booster eligibility summarized here by @MedicalLetter. secure.medicalletter.org/downloads/1621… Image
4) Here are the official eligibility criteria for boosters. Note that Moderna as a booster is a modified 50 mcg. Normal first 2 shots of Moderna is 100 mcg.
5) that said, if you have a cancer or immunocompromised like #MultipleMyeloma, then you should go with the Moderna full dose 100 mcg two shots. Ask your doctor if still possible.
6) Moderna 2 shots (2x 100 mcg) yielded 6x greater antibody response than 2 shots of Pfizer. Might be too late to change; but just FYI for those not vaccinated yet.
7) This booster study (top post) is funded by the NIH. Though keep in mind the Moderna “booster” they tested was the 100 mcg full dose, and not the 50 mcg currently FDA authorized Moderna booster. So while Moderna looks strongest, keep in mind it’s 2x the current booster dose. Image
8) The study hold a wealth of data on boosters. Really key is that J&J seems to lag all the other boosters in terms of antibody response. medrxiv.org/content/10.110…
9) What does booster offer) more than 90% risk reduction in SEVERE DISEASE in Israel 🇮🇱 for those who got 3 Pfizer doses versus 2 doses after 6 months!!! And it benefits both elderly and younger adults!!! Middle age should definitely take booster! Image
10) This is what happens when nationwide boosters were rolled out in Israel 🇮🇱. Its Delta variant wave stopped soon after. Image
11) good morning - 100 million at risk Americans can likely get boosters starting today.
12) Forgot to mention - it seems having initial Pfizer doses then switching to Moderna has slightly less severe headache, fatigue, nausea, and myalgia than a 3rd Pfizer dose.
medrxiv.org/content/10.110… Image
13) Unpopular thing to utter aloud — but many scientists think 1 dose J&J is way too weak. It should never have been a one dose vaccine in the first place. 2 dose should have been minimum.
14) Even 2 doses of J&J is much weaker for T cell stimulation versus 2 Pfizers.
15) What is better than figuring out which booster to get? GOING OUT TO GET ONE! see thread 🧵 of evidence 👇

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More from @DrEricDing

Eric Feigl-Ding Profile picture
Mar 15
SICKENING—Trump’s DHS just deported a surgeon from Brown University Medical School—who is here legally on an H1B visa that doesn’t expire until 2027, and has committed no crimes. Trained in the U.S. at Ohio State, University of Washington, and Yale as a **transplant surgeon** (one of the most difficult surgical fields in all of medicine!!!), she is a highly trained doctor on kidney transplants, which cannot be easily replaced. Her phone was seized at the border. A federal judge handed down an injunction against her deportation—but she was already deported on a plane en route to Paris. Brown’s kidney transplant clinic is now strained by her deportation.Image
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2) Full text:

PROVIDENCE — A Rhode Island doctor who had traveled to Lebanon to see her parents was prevented from re-entering the United States at Boston’s Logan International Airport on Thursday evening, her lawyer and a colleague said.

Dr. Rasha Alawieh, 34, who lives in Providence, has been working at Brown Medicine’s Division of Kidney Disease & Hypertension since last July, and she [has] been part of the transplant service at Rhode Island Hospital, according to Dr. George Bayliss, the organ transplant division’s medical director. She has been studying and working in the United States for about six years, he said Friday.

The US consulate in Lebanon had issued her an H-1B visa, which is given to people in specialty occupations requiring expertise. The visa was valid through mid-2027, said Thomas S. Brown, an attorney representing her and Brown Medicine.

Alawieh was detained when she returned to Logan airport, and family members are afraid that she is about to be deported to Lebanon, he said.

“We are at a loss as to why this happened,” Brown said. “I don’t know if it’s a byproduct of the Trump crackdown on immigration. I don’t know if it’s a travel ban or some other issue.”

He said her phone has been seized and he has not been able to contact Alawieh.

Bayliss said a lawyer filed a petition with the US District Court in Massachusetts, and Judge Leo T. Sorokin issued an order saying Alawieh should not be moved outside of Massachusetts without 48 hours notice. But he said that message apparently did not reach immigration officials in time, and a plane carrying Alawieh left for Paris.

“This is outrageous,” Bayliss said in an interview. “This is a person who is legally entitled to be in the U.S., who is stopped from re-entering the country for reasons no one knows. It’s depriving her patients of a good physician.”

A US Customs and Border Patrol spokesperson, Ryan Brissette, was not able to immediately answer questions about Alawieh on Friday evening.

Bayliss said Alawieh graduated from the American University of Beirut medical school and came to the United States for a nephrology fellowship at Ohio State University. She then landed a transplant fellowship at University of Washington and had a residency in the Yale hospital system before starting at Brown Medicine last July, he said.

“She’s really a very humble and able person,” Bayliss said. “She takes care of her patients. She is talented and thoughtful and a great addition to our division.”

Bayliss said Alawieh went to Lebanon to visit parents and planned to be gone for two weeks. He said she texted a colleague at 6:30 p.m. Thursday saying she was back in Boston, but then her family heard from immigration officials.

Dr. Paul Morrissey, surgical director of the organ transplant division at Brown University Health, said Alawieh works on getting people in Rhode Island on the list for a kidney transplants, and that’s a crucial job at a time when there has been a lot of focus on the need for kidneys and their equitable distribution.

He said Alawieh should not have had any problem traveling out of the country with an H-1B visa.

“It’s an unfortunate set of circumstances,” Morrissey said. “It’s putting a strain on our office. Her work has been exceptional.”

bostonglobe.com/2025/03/14/met…Image
3) There is a new Trump ban against many countries, including tourist visa bans against all countries in the red and orange lists. This list is still tentative. And it shouldn’t have affected people with existing visas, such and the Brown kidney transplant surgeon Image
Read 8 tweets
Eric Feigl-Ding Profile picture
Mar 14
I’ve said it before, and I’ll say it again… once upon a time, liberals did have our own “Leftist Joe Rogan”… his name was Joe Rogan…

Here he is advocating for socialized medicine, healthcare for all, and supporting labor unions to protect workers.
2) Recall, Rogan was once pro Obama and pro Bernie Sanders, and pro Yang Gang, and anti Trump. It’s sad he has since failed to the dark side. But like Vader… maybe he can be redeemed someday and come back to the light.
3) *Fallen, not failed (above).

Joe Rogan was also pro gay rights and pro DACA and pro helping inner city communities that suffer economic and social injustices. It’s sad what he has become. I feel we should try to pull & welcome him back someday. Everyone can be redeemed.
Read 4 tweets
Eric Feigl-Ding Profile picture
Feb 26
BREAKING—FDA suddenly cancels meeting to update next season’s flu vaccines, with zero explanations. Any delays will jeopardize next year’s vaccine supply chain. Image
2) Folks who follow me know that I’m no bullshitter. I criticized past pandemic response right and left, and have called balls and strikes without bias. And I often say things that doctors & epidemiologists are whispering among themselves but don’t say publicly. (Cough cough) ⬇️
3) While I don’t recommend hoarding… I think stocking up on flu antivirals, which you can obtain prophylactically (preventively) from doctors if you ask nicely why you’re high risk, can be a good idea. I know many doctors, epidemiologists and virologists who do for their family.
Read 6 tweets
Eric Feigl-Ding Profile picture
Feb 26
Doctors are debunking RFK Jr’s claim that 20 hospitalized measles cases in Texas are there for mainly quarantine. Doctors on the ground say the 20 kids hospitalized are having trouble breathing. Oh and they are all unvaccinated against measles, which RFK Jr neglects to mention. Image
2) RFK Jr told Trump today there’s now 2 measles deaths.
3) RFK Jr is a tear with his FDA today. A dark Darwinian future lies ahead for America.
Read 4 tweets
Eric Feigl-Ding Profile picture
Feb 26
BREAKING—Reports coming in about potentially *2 measles deaths* in Texas, not just one, according to an HHS briefing to the White House today.
2) Earlier today, one measles death in an unvaccinated child was reported in Texas. Image
3) It seems to be RFK Jr who said it in an official Trump WH cabinet meeting today. Not saying he doesn’t lie, but he is now HHS Secretary
Read 6 tweets
Eric Feigl-Ding Profile picture
Feb 21
Woke or biology? There are actually more than the basic “male” XY & “female” XX sexes. Why? Because biology also creates people with single X chromosomes, or extra chromosomes like XXX, XXY, XYY, or XXX+, plus many 🧬genes. 👉All I’m asking is— please be kind to others. Thanks🙏 Image
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2) “The most frequent SCAs include Turner syndrome (45,X), Klinefelter syndrome (47,XXY), Trisomy X syndrome (47,XXX), and Double Y syndrome (47,XYY).”

pmc.ncbi.nlm.nih.gov/articles/PMC10…
3) “The phenotype seen in SCAs is highly variable and may not merely be due to the direct genomic imbalance from altered sex chromosome gene dosage but also due to additive alterations in gene networks and regulatory pathways across the genome as well as individual genetic modifiers.”
Read 5 tweets

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