Kathryn Kinzel
@kkinzel.bsky.social
Infectious disease epidemiologist, specializing in vaccines. A personal account where I yell into the void. Excessive gif user. she/her 🏳️🌈
Pinned
Kathryn Kinzel
@kkinzel.bsky.social
· Jun 27
a group of people are sitting around a table in a room with a window .
ALT: a group of people are sitting around a table in a room with a window .
media.tenor.com
The next slide is California Proposition 65.
Dr Offit is right on, however I of little personal wealth would consider taking the money because that’s less money the grifters have, and at least there is a platform to reach somewhat reasonable people.
(Which is a stretch, but I do feel that more good info is better)
(Which is a stretch, but I do feel that more good info is better)
open.substack.com/pub/pauloffi...
What do you do if someone offers you $1 million dollars to debate vaccine safety?
What do you do if someone offers you $1 million dollars to debate vaccine safety?
Debating Science: No Thanks
Anti-vaccine activists RFK Jr., Aaron Siri, and Steve Kirsch have asked that I debate them on vaccine safety. One of them offered me $1 million to do it. Here’s why I declined.
open.substack.com
December 16, 2025 at 12:30 PM
Dr Offit is right on, however I of little personal wealth would consider taking the money because that’s less money the grifters have, and at least there is a platform to reach somewhat reasonable people.
(Which is a stretch, but I do feel that more good info is better)
(Which is a stretch, but I do feel that more good info is better)
I made it home, thought about what I might treat myself with for lunch, then slept through lunch. 🤣
I think I have the power to make it to normal bed time and hopefully reset my internal clock.
I think I have the power to make it to normal bed time and hopefully reset my internal clock.
a woman with curly hair crosses her fingers
ALT: a woman with curly hair crosses her fingers
media.tenor.com
December 12, 2025 at 7:07 PM
I made it home, thought about what I might treat myself with for lunch, then slept through lunch. 🤣
I think I have the power to make it to normal bed time and hopefully reset my internal clock.
I think I have the power to make it to normal bed time and hopefully reset my internal clock.
“Welcome to Boston where the local time is 5:34”
Ya know I’m not sure if I wanted to be THIS early getting home.
Ya know I’m not sure if I wanted to be THIS early getting home.
December 12, 2025 at 10:36 AM
“Welcome to Boston where the local time is 5:34”
Ya know I’m not sure if I wanted to be THIS early getting home.
Ya know I’m not sure if I wanted to be THIS early getting home.
If this is how I’m texting my sister while waiting for my red eye flight, I think I’m in trouble.
December 12, 2025 at 5:13 AM
If this is how I’m texting my sister while waiting for my red eye flight, I think I’m in trouble.
My boss is handling the moderation of this session but it was lovely to see @doritreiss.bsky.social in person (also hi Dorit, this is my secret name!)
December 11, 2025 at 5:41 PM
My boss is handling the moderation of this session but it was lovely to see @doritreiss.bsky.social in person (also hi Dorit, this is my secret name!)
I got through my very short presentation, and now the lack of sleep is catching up to me.
December 11, 2025 at 2:00 AM
I got through my very short presentation, and now the lack of sleep is catching up to me.
Dammit FDA let us have a win!
RSV immunizations have dramatically reduced RSV hospitalizations for infants, WHICH IS A GOOD THING
RSV immunizations have dramatically reduced RSV hospitalizations for infants, WHICH IS A GOOD THING
The FDA is now reexamining shots to prevent RSV -- but once again, they haven't offered any evidence for safety concerns. From me: www.theguardian.com/us-news/2025...
US health officials re-examine RSV shots despite documented safety and efficacy
The FDA is reviewing RSV vaccines, which have drastically lowered infant hospitalizations, a spokesperson confirmed
www.theguardian.com
December 10, 2025 at 2:41 PM
Dammit FDA let us have a win!
RSV immunizations have dramatically reduced RSV hospitalizations for infants, WHICH IS A GOOD THING
RSV immunizations have dramatically reduced RSV hospitalizations for infants, WHICH IS A GOOD THING
Perhaps the best conference ever. Ready for the next couple of days.
December 9, 2025 at 9:37 PM
Perhaps the best conference ever. Ready for the next couple of days.
Levi doesn’t understand that mandates are constitutionally given powers of STATES.
(I mean he doesn’t understand a lot but this is the one thing for this particular argument)
(I mean he doesn’t understand a lot but this is the one thing for this particular argument)
So to be clear: ACIP didn’t vote to remove the hepatitis B birth dose because of new safety concerns. They did it to make a political point about mandates. Thank you for saying so explicitly.
December 9, 2025 at 1:35 AM
Levi doesn’t understand that mandates are constitutionally given powers of STATES.
(I mean he doesn’t understand a lot but this is the one thing for this particular argument)
(I mean he doesn’t understand a lot but this is the one thing for this particular argument)
Reposted by Kathryn Kinzel
So to be clear: ACIP didn’t vote to remove the hepatitis B birth dose because of new safety concerns. They did it to make a political point about mandates. Thank you for saying so explicitly.
December 7, 2025 at 1:45 AM
So to be clear: ACIP didn’t vote to remove the hepatitis B birth dose because of new safety concerns. They did it to make a political point about mandates. Thank you for saying so explicitly.
Time for my semi-live tweet of me vs anxiety, travel edition.
Travel always amps up my generalized anxiety, to the point where I had given myself food poisoning and was still saying “aw that’s just the nerves”
ANYWAY I got that mostly sorted out and have my lucky travel shirt on.
Travel always amps up my generalized anxiety, to the point where I had given myself food poisoning and was still saying “aw that’s just the nerves”
ANYWAY I got that mostly sorted out and have my lucky travel shirt on.
December 8, 2025 at 12:01 PM
Time for my semi-live tweet of me vs anxiety, travel edition.
Travel always amps up my generalized anxiety, to the point where I had given myself food poisoning and was still saying “aw that’s just the nerves”
ANYWAY I got that mostly sorted out and have my lucky travel shirt on.
Travel always amps up my generalized anxiety, to the point where I had given myself food poisoning and was still saying “aw that’s just the nerves”
ANYWAY I got that mostly sorted out and have my lucky travel shirt on.
Reposted by Kathryn Kinzel
So, to all the "RFK's got some good ideas" folks (Rachael Bedard, Leana Wen) and Jay Bhattacharya is "an excellent choice for NIH" (Steven Macedo, Frances Lee) and Vinay Prasad "will bring a breath of fresh air to FDA" (Adam Cifu, John Mandrola) groupies--you own this now too.
I think the *speed* at which RFK Jr and his Great Barrington Declaration/anti-vaxx/Brownstone wrecking crew have been dismantling the US public health system has been really astonishing
Well, Senators Bill Cassidy and Thom Tillis, you wanted RFK Jr. to “go wild” at HHS.
Congratulations. You’ve achieved your goal. He is well on his way to completely destroying the US vaccine program.
Congratulations. You’ve achieved your goal. He is well on his way to completely destroying the US vaccine program.
December 7, 2025 at 11:15 AM
So, to all the "RFK's got some good ideas" folks (Rachael Bedard, Leana Wen) and Jay Bhattacharya is "an excellent choice for NIH" (Steven Macedo, Frances Lee) and Vinay Prasad "will bring a breath of fresh air to FDA" (Adam Cifu, John Mandrola) groupies--you own this now too.
Reposted by Kathryn Kinzel
Voted yes on RFK Jr when he could have voted no.
Continues to hedge, when he could act.
Continues to hedge, when he could act.
December 5, 2025 at 4:36 PM
Voted yes on RFK Jr when he could have voted no.
Continues to hedge, when he could act.
Continues to hedge, when he could act.
Strange, is it not? that of the myriads who
Before us pass’d the door of Darkness through,
Not one returns to tell us of the Road
Which to discover, we must travel too
Before us pass’d the door of Darkness through,
Not one returns to tell us of the Road
Which to discover, we must travel too
Which lines of poetry live rent-free in your head?
December 7, 2025 at 4:33 AM
Strange, is it not? that of the myriads who
Before us pass’d the door of Darkness through,
Not one returns to tell us of the Road
Which to discover, we must travel too
Before us pass’d the door of Darkness through,
Not one returns to tell us of the Road
Which to discover, we must travel too
Reposted by Kathryn Kinzel
Lawyer with ties to RFK Jr. sparks outcry over vaccine misinformation at CDC advisory meeting www.nbcnews.com/health/kids-... via @nbcnews.com @ariabendix.bsky.social
Lawyer with ties to Kennedy sparks outcry over vaccine misinformation at CDC advisory meeting
Many public health experts lambasted lawyer Aaron Siri’s two-hour presentation in front of the committee Friday.
www.nbcnews.com
December 6, 2025 at 9:51 PM
Lawyer with ties to RFK Jr. sparks outcry over vaccine misinformation at CDC advisory meeting www.nbcnews.com/health/kids-... via @nbcnews.com @ariabendix.bsky.social
Reposted by Kathryn Kinzel
A study on 1.7 million people in Hong Kong shows superior hybrid immunity to Covid in people who got vaccinated before infection vs. people who got infected first. "Our findings are a direct rebuttal to arguments for natural immunity," the authors write. doi.org/10.1016/j.va...
Redirecting
doi.org
December 6, 2025 at 5:02 PM
A study on 1.7 million people in Hong Kong shows superior hybrid immunity to Covid in people who got vaccinated before infection vs. people who got infected first. "Our findings are a direct rebuttal to arguments for natural immunity," the authors write. doi.org/10.1016/j.va...
Reposted by Kathryn Kinzel
WELL NOW, would you look at that? A massive, 24-YEAR-LONG study of MORE THAN 1.2 MILLION people in Denmark found NO LINK between aluminum in childhood vaccines and autism, asthma, OR chronic disorders.
Aluminum is an ADJUVANT.
It ENHANCES your immune response to a vaccine.
That’s it.
Aluminum is an ADJUVANT.
It ENHANCES your immune response to a vaccine.
That’s it.
December 5, 2025 at 5:00 PM
WELL NOW, would you look at that? A massive, 24-YEAR-LONG study of MORE THAN 1.2 MILLION people in Denmark found NO LINK between aluminum in childhood vaccines and autism, asthma, OR chronic disorders.
Aluminum is an ADJUVANT.
It ENHANCES your immune response to a vaccine.
That’s it.
Aluminum is an ADJUVANT.
It ENHANCES your immune response to a vaccine.
That’s it.
This morning I woke up, remembered ACIP yesterday, and cried a bit.
It’s just so frustrating to see my chosen field fall apart on the national level.
“But hey, you live in Massachusetts, which has been outspoken about maintaining the current vaccine schedule!”
Yes, but what about everyone else?
It’s just so frustrating to see my chosen field fall apart on the national level.
“But hey, you live in Massachusetts, which has been outspoken about maintaining the current vaccine schedule!”
Yes, but what about everyone else?
December 6, 2025 at 3:33 PM
This morning I woke up, remembered ACIP yesterday, and cried a bit.
It’s just so frustrating to see my chosen field fall apart on the national level.
“But hey, you live in Massachusetts, which has been outspoken about maintaining the current vaccine schedule!”
Yes, but what about everyone else?
It’s just so frustrating to see my chosen field fall apart on the national level.
“But hey, you live in Massachusetts, which has been outspoken about maintaining the current vaccine schedule!”
Yes, but what about everyone else?
Reposted by Kathryn Kinzel
Here is the white paper about studying unvaccinated children by CDC. Actually reading it suggests that these studies would not be easy - and that most of these kids are not unvaccinated because of parental refusal.
www.cdc.gov/vaccine-safe...
www.cdc.gov/vaccine-safe...
www.cdc.gov
December 5, 2025 at 9:55 PM
Here is the white paper about studying unvaccinated children by CDC. Actually reading it suggests that these studies would not be easy - and that most of these kids are not unvaccinated because of parental refusal.
www.cdc.gov/vaccine-safe...
www.cdc.gov/vaccine-safe...
Reposted by Kathryn Kinzel
Friends, Yesterday and today, I watched many hours of the CDC’s meeting of the Advisory Committee on Immunization Practices (ACIP).
It was painful.
But we learned a lot.
That bad news is that our kids are going to pay the price for RFK jr’s views.
insidemedicine.substack.com/p/analysis-o...
It was painful.
But we learned a lot.
That bad news is that our kids are going to pay the price for RFK jr’s views.
insidemedicine.substack.com/p/analysis-o...
Analysis of the latest ACIP meeting at the CDC: Vaccines—and rigorous science—are increasingly under attack.
A close look at how the CDC’s vaccine advisory committee under RFK Jr. again changed high-stakes recommendations without solid evidence.
insidemedicine.substack.com
December 6, 2025 at 3:39 AM
Friends, Yesterday and today, I watched many hours of the CDC’s meeting of the Advisory Committee on Immunization Practices (ACIP).
It was painful.
But we learned a lot.
That bad news is that our kids are going to pay the price for RFK jr’s views.
insidemedicine.substack.com/p/analysis-o...
It was painful.
But we learned a lot.
That bad news is that our kids are going to pay the price for RFK jr’s views.
insidemedicine.substack.com/p/analysis-o...
Reposted by Kathryn Kinzel
This is all-hands on deck. RFK Jr. wants to destroy vaccination in the US. COVID and HBV vaccination were the first step. These diseases WILL come back. And your personal vaccination status is important, but so is the coverage in your community. So up your game and fight. www.vox.com/2015/3/25/82...
The lives vaccines have saved in the US, in one chart
Vox is a general interest news site for the 21st century. Its mission: to help everyone understand our complicated world, so that we can all help shape it. In text, video and audio, our reporters expl...
www.vox.com
December 6, 2025 at 12:35 PM
This is all-hands on deck. RFK Jr. wants to destroy vaccination in the US. COVID and HBV vaccination were the first step. These diseases WILL come back. And your personal vaccination status is important, but so is the coverage in your community. So up your game and fight. www.vox.com/2015/3/25/82...
Reposted by Kathryn Kinzel
NEW: The entire US childhood vaccine schedule is now open for scrutiny. My latest:
www.theguardian.com/us-news/2025...
www.theguardian.com/us-news/2025...
Experts fear for US childhood vaccine schedule after hepatitis B guideline change
Pediatricians say panel’s decision will create confusion and access issues, and condemn ‘parody of public health’
www.theguardian.com
December 6, 2025 at 1:01 PM
NEW: The entire US childhood vaccine schedule is now open for scrutiny. My latest:
www.theguardian.com/us-news/2025...
www.theguardian.com/us-news/2025...
I unfortunately have few meetings today so I'm listening to ACIP nearly in full.
It sounds like we are back to having bad scientific discussions where members are bringing their emotional baggage to the discussion. Drs. Meissner and Hibbeln are trying to be a voice of reason.
It sounds like we are back to having bad scientific discussions where members are bringing their emotional baggage to the discussion. Drs. Meissner and Hibbeln are trying to be a voice of reason.
December 5, 2025 at 1:58 PM
I unfortunately have few meetings today so I'm listening to ACIP nearly in full.
It sounds like we are back to having bad scientific discussions where members are bringing their emotional baggage to the discussion. Drs. Meissner and Hibbeln are trying to be a voice of reason.
It sounds like we are back to having bad scientific discussions where members are bringing their emotional baggage to the discussion. Drs. Meissner and Hibbeln are trying to be a voice of reason.
Despite what Hoeg said today at the ACIP meeting.
I’m pretty sure the answers are here: bsky.app/profile/kkin...
I’m pretty sure the answers are here: bsky.app/profile/kkin...
"Details from an investigation by CBER Director Vinay Prasad into 10 alleged child deaths related to Covid-19 vaccines won’t be coming soon, an FDA spokesperson told Endpoints News on Wednesday."
endpoints.news/fda-says-it-...
@endpts.com
endpoints.news/fda-says-it-...
@endpts.com
FDA says it won't release details of claimed Covid vaccine deaths in 'near term'
Details from an investigation by CBER Director Vinay Prasad into 10 alleged child deaths related to Covid-19 vaccines won't be coming soon, an FDA spokesperson told Endpoints News on Wednesday.
endpoints.news
December 5, 2025 at 12:57 AM
Despite what Hoeg said today at the ACIP meeting.
I’m pretty sure the answers are here: bsky.app/profile/kkin...
I’m pretty sure the answers are here: bsky.app/profile/kkin...
