Mark Dexter
@pedsdocdex.bsky.social
Pediatric intensivist, lover of vaccines,
pie-diatrician, currently in Boston.
pie-diatrician, currently in Boston.
Pinned
I wish Republican politicians were even half as afraid of measles as they are of their own primary voters.
The first thing you learn in the third year of medical school is to NOT piss off the nurses.
I am seeing quite a few nurses calling for a nationwide strike over the killing of Alex Pretti. I think we are seeing one of the largest workforces being radicalized before our very eyes.
January 25, 2026 at 4:42 AM
The first thing you learn in the third year of medical school is to NOT piss off the nurses.
He was a goddamn ICU nurse.
January 24, 2026 at 8:58 PM
He was a goddamn ICU nurse.
This is a “real-world” study that would be completely unethical to run as an actual experiment!
This is the chair of ACIP. Experimenting on America's kids. HE'S GOT TO GO. “What we’re going to have is a real-world experience of when unvaccinated people get measles,” he said. “What is the new incidence of hospitalization? What’s the incidence of death?” www.statnews.com/2026/01/22/v....
Top CDC vaccine adviser questions need for polio shot, other longstanding recommendations
The chair of a federal vaccine advisory panel charted a new course for the committee in a podcast released Thursday, questioning longstanding recommendations.
www.statnews.com
January 23, 2026 at 2:17 PM
This is a “real-world” study that would be completely unethical to run as an actual experiment!
Reposted by Mark Dexter
“Mandates have increased hesitancy” is one of the dumbest things I’ve ever read.
Also we’re bringing polio back I hope Mitch McConnell very specifically enjoys the world he created.
Also we’re bringing polio back I hope Mitch McConnell very specifically enjoys the world he created.
January 23, 2026 at 2:02 PM
“Mandates have increased hesitancy” is one of the dumbest things I’ve ever read.
Also we’re bringing polio back I hope Mitch McConnell very specifically enjoys the world he created.
Also we’re bringing polio back I hope Mitch McConnell very specifically enjoys the world he created.
Im finally watching S1 of The Pitt. Is this poor Whitaker kid going to get sprayed with bodily fluids during every episode?
January 16, 2026 at 10:52 PM
Im finally watching S1 of The Pitt. Is this poor Whitaker kid going to get sprayed with bodily fluids during every episode?
In the eternal words of Wendell Pierce, “well, sheeeeeeeit.” 😬
As cases of bacterial meningitis rise, doctors worry fewer teens will get vaccinated www.nbcnews.com/health/healt... via @nbcnews.com @kaitsulliva.bsky.social
As cases of a rare, deadly infection rise, doctors worry fewer teens will get vaccinated
Under Robert F. Kennedy Jr.’s guidance, the CDC no longer recommends routine vaccination to protect against meningococcal disease.
www.nbcnews.com
January 14, 2026 at 11:30 PM
In the eternal words of Wendell Pierce, “well, sheeeeeeeit.” 😬
Preventable deaths. Of children.
Influenza kills. It kills children and adults. We're likely going to see a higher number of pediatric deaths this year than last, and last year was a record year since pediatric flu deaths became reportable. It's never too late to vaccinate. Talk to your healthcare provider about getting the shot.
4 child flu deaths reported in Massachusetts, including 2 under 2 years old
Two of the four deaths were of children under the age of 2 in Boston, according to the Boston Public Health Commission.
www.wcvb.com
January 7, 2026 at 3:24 PM
Preventable deaths. Of children.
Reminder that the CDC did not change the recommended childhood vaccine schedule, RFK Jr. did.
January 6, 2026 at 2:40 PM
Reminder that the CDC did not change the recommended childhood vaccine schedule, RFK Jr. did.
Reposted by Mark Dexter
This abrupt change (based on no data) is outrageous and endangers the health & lives of US children. I have seen kids die from flu, meningococcus, and RSV. These deaths are preventable by vaccination. I urge parents to talk to your doctor about how best to protect your kids from these diseases.
Kennedy Scales Back the Number of Vaccines Recommended for Children
www.nytimes.com
January 6, 2026 at 1:47 PM
This abrupt change (based on no data) is outrageous and endangers the health & lives of US children. I have seen kids die from flu, meningococcus, and RSV. These deaths are preventable by vaccination. I urge parents to talk to your doctor about how best to protect your kids from these diseases.
I wish Republican politicians were even half as afraid of measles as they are of their own primary voters.
January 6, 2026 at 2:35 PM
I wish Republican politicians were even half as afraid of measles as they are of their own primary voters.
Hepatitas B, you say?
Has Trump taken his daily cognitive test yet.
Has Trump taken his daily cognitive test yet.
January 5, 2026 at 10:57 PM
Hepatitas B, you say?
Has Trump taken his daily cognitive test yet.
Has Trump taken his daily cognitive test yet.
Reposted by Mark Dexter
Children will die with RFK Jr.'s new vaccine recommendations. We're NOT doing the "experts disagree" game. The US vaccine schedule was painstakingly constructed through a deep & thorough process by experts with unquestionable expertise. This is policy by fiat. It is pre-meditated murder. 1/
January 5, 2026 at 10:39 PM
Children will die with RFK Jr.'s new vaccine recommendations. We're NOT doing the "experts disagree" game. The US vaccine schedule was painstakingly constructed through a deep & thorough process by experts with unquestionable expertise. This is policy by fiat. It is pre-meditated murder. 1/
A reminder that there was no new science that RFK Jr. read that said the Danish childhood vaccine schedule was ideal or even appropriate for American children. He wanted fewer vaccinations and used Hoeg’s cherry-picking to get there.
January 5, 2026 at 10:27 PM
A reminder that there was no new science that RFK Jr. read that said the Danish childhood vaccine schedule was ideal or even appropriate for American children. He wanted fewer vaccinations and used Hoeg’s cherry-picking to get there.
Need to write the “I’m a doctor and your son; these labs are all fine” official response for @mcsweeneys.net.
"First, you’ll have to log on with a password that you have long forgotten. I’ll wait as you do your two-step authentication. I promise I am worth the wait. This is serious business after all. This is life or death."
I’m Your Uploaded Bloodwork Results, and No, I Will Not Explain Myself to You
I’ve finally arrived. That’s right, it’s me, your bloodwork results, in your inbox three days after that chatty nurse couldn’t find your vein and l...
buff.ly
January 4, 2026 at 7:19 PM
Need to write the “I’m a doctor and your son; these labs are all fine” official response for @mcsweeneys.net.
Reposted by Mark Dexter
What does it mean when your doctors keep insisting you redo the cognitive exam
January 2, 2026 at 2:58 PM
What does it mean when your doctors keep insisting you redo the cognitive exam
Isn’t the easy solution to this ‘problem’ just…giving everyone Medicare?
The UK is very different from Medicare. In Medicare you can mostly go to a specialist of your choice. Not in the UK
This is how most UHC works. Will Americans be ok with this change to Medicare ?
Referrals for specialist care - NHS share.google/X84C9oCy1rE1...
This is how most UHC works. Will Americans be ok with this change to Medicare ?
Referrals for specialist care - NHS share.google/X84C9oCy1rE1...
December 30, 2025 at 6:07 PM
Isn’t the easy solution to this ‘problem’ just…giving everyone Medicare?
Reposted by Mark Dexter
Seriously. When I was on my ortho elective, I followed the doc into a room where a pt with a possible septic ankle had linezolid running. Instead of finding the nurse to shut it off he tied a knot in the line
December 14, 2025 at 4:07 PM
Seriously. When I was on my ortho elective, I followed the doc into a room where a pt with a possible septic ankle had linezolid running. Instead of finding the nurse to shut it off he tied a knot in the line
Reposted by Mark Dexter
Bad framing: ACIP voted to scrap the universal hepatitis B vaccine recommendation for newborns.
Accurate framing: Anti-vax conspiracy theorists appointed to ACIP by Robert Kennedy Jr., who made a fortune as an anti-vax profiteer, voted to expose babies to a preventable, incurable, deadly illness.
Accurate framing: Anti-vax conspiracy theorists appointed to ACIP by Robert Kennedy Jr., who made a fortune as an anti-vax profiteer, voted to expose babies to a preventable, incurable, deadly illness.
December 5, 2025 at 4:12 PM
Bad framing: ACIP voted to scrap the universal hepatitis B vaccine recommendation for newborns.
Accurate framing: Anti-vax conspiracy theorists appointed to ACIP by Robert Kennedy Jr., who made a fortune as an anti-vax profiteer, voted to expose babies to a preventable, incurable, deadly illness.
Accurate framing: Anti-vax conspiracy theorists appointed to ACIP by Robert Kennedy Jr., who made a fortune as an anti-vax profiteer, voted to expose babies to a preventable, incurable, deadly illness.
Reposted by Mark Dexter
Every time ACIP meets, Bill Cassidy (R, Coward City) makes pathetic mewling sounds about how bad the committee is.
It is Bill Cassidy’s fault that ACIP is no longer a legitimate scientific body.
Sir, you are a fucking U.S. Senator. Impeach RFK Jr or STFU.
It is Bill Cassidy’s fault that ACIP is no longer a legitimate scientific body.
Sir, you are a fucking U.S. Senator. Impeach RFK Jr or STFU.
December 5, 2025 at 12:06 AM
Every time ACIP meets, Bill Cassidy (R, Coward City) makes pathetic mewling sounds about how bad the committee is.
It is Bill Cassidy’s fault that ACIP is no longer a legitimate scientific body.
Sir, you are a fucking U.S. Senator. Impeach RFK Jr or STFU.
It is Bill Cassidy’s fault that ACIP is no longer a legitimate scientific body.
Sir, you are a fucking U.S. Senator. Impeach RFK Jr or STFU.
Dr. Meissner is a former colleague of mine. I pretty much never agreed with him politically, but I’m glad that he’s kept his sense of doing right for kids when it comes to vaccination.
Meissner: "The fact that hepatitis has not occured in someone who has received the Hep B series is about the best proof you're going to get that the vaccine is effective."
#ACIP
#ACIP
December 5, 2025 at 3:57 PM
Dr. Meissner is a former colleague of mine. I pretty much never agreed with him politically, but I’m glad that he’s kept his sense of doing right for kids when it comes to vaccination.
Reposted by Mark Dexter
People will die, and are currently dying, because RFK was granted one of the most powerful megaphones in the country. Two people who could have thrown barriers in front of his climb decided not to; there's a sex scandal here but it is not the biggest scandal.
November 26, 2025 at 11:30 PM
People will die, and are currently dying, because RFK was granted one of the most powerful megaphones in the country. Two people who could have thrown barriers in front of his climb decided not to; there's a sex scandal here but it is not the biggest scandal.
My new hero.
OMG! I just got off the plane in Asheville and RFK Jr. Was boarding and someone passed by him and said “quack”
November 15, 2025 at 8:27 PM
My new hero.
I don’t know the specifics for Minnesota, but overall THINGS WERE PRETTY BAD BEFORE THE ACA!
Tom Emmer: "You're gonna have to create high risk pools again. Just go back where Minnesota was before the ACA."
November 12, 2025 at 9:48 PM
I don’t know the specifics for Minnesota, but overall THINGS WERE PRETTY BAD BEFORE THE ACA!