Julie Parsonnet
@julieparsonnet.bsky.social
Infectious diseases doctor, epidemiologist, gun injury prevention advocate, Stanford professor, and penguin enthusiast.
Reposted by Julie Parsonnet
Questions to ponder when stuck in traffic.
December 29, 2025 at 7:48 PM
Questions to ponder when stuck in traffic.
Reposted by Julie Parsonnet
Have you ever heard someone go off, and their words are so perfectly chosen, so well said in that moment, that you’re in awe? You think, “There’s nothing to add here,” and you applaud in your head.
That’s exactly this. Pure perfection. 👏🏽👏🏽👏🏽
That’s exactly this. Pure perfection. 👏🏽👏🏽👏🏽
December 21, 2025 at 3:40 PM
Have you ever heard someone go off, and their words are so perfectly chosen, so well said in that moment, that you’re in awe? You think, “There’s nothing to add here,” and you applaud in your head.
That’s exactly this. Pure perfection. 👏🏽👏🏽👏🏽
That’s exactly this. Pure perfection. 👏🏽👏🏽👏🏽
Congrats to IDSA for picking Dr. Marrazzo for this leadership position. During this challenging time for ID, it's heartening to have such a kind, visionary and motivating voice representing us in DC #idsky @drjeannem.bsky.social
IDSA has selected Jeanne Marrazzo, MD, MPH, FIDSA, as its next chief executive officer, effective Jan. 12, 2026.
Learn more: bit.ly/4pHt2nF
Learn more: bit.ly/4pHt2nF
December 18, 2025 at 7:52 PM
Congrats to IDSA for picking Dr. Marrazzo for this leadership position. During this challenging time for ID, it's heartening to have such a kind, visionary and motivating voice representing us in DC #idsky @drjeannem.bsky.social
Quelle surprise (pas vraiment)!
"A causal link between mRNA vaccination and excess long-term mortality appears highly unlikely."
bit.ly/4q3rGDw
bit.ly/4q3rGDw
Massive four-year study finds no increase in deaths linked to COVID-19 mRNA vaccination
Data from 30 million French adults suggests COVID-19 vaccines did not lead to higher death rates. Instead, they reduced them.
bit.ly
December 16, 2025 at 8:12 PM
Quelle surprise (pas vraiment)!
Reposted by Julie Parsonnet
Michael C. Rockefeller got shipwrecked in 1963, washed up on an island, and was promptly eaten by cannibals.
December 13, 2025 at 4:26 PM
Michael C. Rockefeller got shipwrecked in 1963, washed up on an island, and was promptly eaten by cannibals.
Reposted by Julie Parsonnet
Gun companies exploit young men’s insecurities and offer shortcuts to manhood—all to rake in more and more profit, with no regard for safety.
See more ads just like these: https://smokinggun.org/report/turning-our-streets-into-war-zones/
See more ads just like these: https://smokinggun.org/report/turning-our-streets-into-war-zones/
December 11, 2025 at 10:00 PM
Gun companies exploit young men’s insecurities and offer shortcuts to manhood—all to rake in more and more profit, with no regard for safety.
See more ads just like these: https://smokinggun.org/report/turning-our-streets-into-war-zones/
See more ads just like these: https://smokinggun.org/report/turning-our-streets-into-war-zones/
An indictment of CDC's kowtowing. "People choose to go along to save...an institution, to protect their families, or to keep their jobs, even if it means sacrificing principles...This gradual process of adaptation and compromise...is what ultimately solidifies an autocrat's power." bit.ly/4pZX85O
With All Good Intentions: How CDC Decisions Harmed Science and People
Abstract. The Centers for Disease Control and Prevention (CDC) has been directed by the Trump administration to purge data about transgender persons. A for
academic.oup.com
December 8, 2025 at 6:24 PM
An indictment of CDC's kowtowing. "People choose to go along to save...an institution, to protect their families, or to keep their jobs, even if it means sacrificing principles...This gradual process of adaptation and compromise...is what ultimately solidifies an autocrat's power." bit.ly/4pZX85O
“Several observers of ACIP compared the meeting to a clown car, but my husband, Fred, reminded me that clowns are seasoned professionals who work very hard on their shows, and this meeting did not reflect such professionalism.” #vaccines #idsky #publichealth
Must-read review of the CDC ACIP meeting by @doritreiss.bsky.social 👇
"These people make decisions that impact people’s lives. Given that, the members’ lack of expertise, incompetence, and blatant anti-vaccine biases were dismaying"
www.statnews.com/2025/12/06/a... via @statnews.com
"These people make decisions that impact people’s lives. Given that, the members’ lack of expertise, incompetence, and blatant anti-vaccine biases were dismaying"
www.statnews.com/2025/12/06/a... via @statnews.com
RFK Jr.’s vaccine advisory panel is beset by incompetence, bias, and procedural chaos
The Advisory Committee on Immunization Practices' (ACIP) meetings used to be a geek’s dream: hours of long, maybe dreary presentation of extensive data
www.statnews.com
December 6, 2025 at 3:37 PM
“Several observers of ACIP compared the meeting to a clown car, but my husband, Fred, reminded me that clowns are seasoned professionals who work very hard on their shows, and this meeting did not reflect such professionalism.” #vaccines #idsky #publichealth
Our hope for public health rests in the hands of the heroes of our local and state health departments. Goodbye CDC and ACIP #vaccines #idsky #publichealth
December 6, 2025 at 3:14 PM
Our hope for public health rests in the hands of the heroes of our local and state health departments. Goodbye CDC and ACIP #vaccines #idsky #publichealth
Reposted by Julie Parsonnet
“Delaying the first hepatitis B vaccine dose beyond the newborn period introduces risks that have lifelong detrimental consequences and no measurable health benefit.”
Important and timely piece by an amazing team - Mike Abers, Angela Ulrich, & Rochelle Walensky. 👏👏
jamanetwork.com/journals/jam...
Important and timely piece by an amazing team - Mike Abers, Angela Ulrich, & Rochelle Walensky. 👏👏
jamanetwork.com/journals/jam...
Risks of Revising Newborn Hepatitis B Vaccination Recommendation
This Viewpoint from infectious disease experts cautions about the consequences of rescinding the ACIP policy to immunize all newborns against hepatitis B.
jamanetwork.com
December 4, 2025 at 1:49 AM
“Delaying the first hepatitis B vaccine dose beyond the newborn period introduces risks that have lifelong detrimental consequences and no measurable health benefit.”
Important and timely piece by an amazing team - Mike Abers, Angela Ulrich, & Rochelle Walensky. 👏👏
jamanetwork.com/journals/jam...
Important and timely piece by an amazing team - Mike Abers, Angela Ulrich, & Rochelle Walensky. 👏👏
jamanetwork.com/journals/jam...
"If the [FDA's] goal is to rebuild confidence, the answer is not to toss aside the basic rules of science, stifle argument and oversight, or supplant expert scientific inquiry...It is to insist on open deliberation, solid evidence, and procedures the public can see and trust." #idsky bit.ly/3KBZ19A
A Threat to Evidence-Based Vaccine Policy and Public Health Security at the FDA | NEJM
Twelve former commissioners of the FDA express concern that the agency’s recent moves will undermine a regulatory model designed to ensure vaccine safety, effectiveness, and availability.
www.nejm.org
December 4, 2025 at 2:17 AM
"If the [FDA's] goal is to rebuild confidence, the answer is not to toss aside the basic rules of science, stifle argument and oversight, or supplant expert scientific inquiry...It is to insist on open deliberation, solid evidence, and procedures the public can see and trust." #idsky bit.ly/3KBZ19A
Stanford ID matched with great people this year, but as a field, Infectious Diseases is struggling. What is to be done? @idsainfo.bsky.social @idsky.bsky.social
December 4, 2025 at 2:09 AM
Stanford ID matched with great people this year, but as a field, Infectious Diseases is struggling. What is to be done? @idsainfo.bsky.social @idsky.bsky.social
“The evidence strongly supports the safety of aluminum adjuvants and their necessity in certain vaccines. Clinicians can reassure caregivers that aluminum-containing vaccines provide clear benefits, with… no systemic toxicity signal in large clinical and epidemiologic studies”. #idsky bit.ly/3Y2UXCj
The Role and Safety of Aluminum Adjuvants in Childhood Vaccines
Aluminum salts have been used as adjuvants in vaccines for nearly a century, enhancing the immune response to purified antigens and ensuring durable protection against serious infectious diseases. Des...
bit.ly
December 3, 2025 at 4:11 PM
“The evidence strongly supports the safety of aluminum adjuvants and their necessity in certain vaccines. Clinicians can reassure caregivers that aluminum-containing vaccines provide clear benefits, with… no systemic toxicity signal in large clinical and epidemiologic studies”. #idsky bit.ly/3Y2UXCj
Our first Xmas card of the season. Ho, ho, ho.
December 3, 2025 at 4:34 AM
Our first Xmas card of the season. Ho, ho, ho.
For Giving Tuesday, consider donating to Scrubs Addressing the Firearm Epidemic. SAFE, with chapters in >70 med schools, works to ensure that all clinicians have the skills to help patients and communities minimize their risk of firearms injury or death. Learn more at standsafe.org
SAFE Scrubs Addressing the Firearm Epidemic
standsafe.org
December 2, 2025 at 5:22 AM
For Giving Tuesday, consider donating to Scrubs Addressing the Firearm Epidemic. SAFE, with chapters in >70 med schools, works to ensure that all clinicians have the skills to help patients and communities minimize their risk of firearms injury or death. Learn more at standsafe.org
"As physicians, we must convey scientific truths to policymakers and communities. It is our duty to stand up and speak out...to ensure a strong public health system that guarantees everyone access to health care, including people with HIV and vulnerable to HIV." bit.ly/4pH3OW4
World AIDS Day—At a Crossroads
This Viewpoint discusses the need to continue combating HIV domestically and internationally.
jamanetwork.com
December 1, 2025 at 10:04 PM
"As physicians, we must convey scientific truths to policymakers and communities. It is our duty to stand up and speak out...to ensure a strong public health system that guarantees everyone access to health care, including people with HIV and vulnerable to HIV." bit.ly/4pH3OW4
Reposted by Julie Parsonnet
The Civil Rights Division was created to protect the disempowered. Under Trump, it’s working to dismantle gun restrictions.
At the Justice Department, Civil Rights Now Means Gun Rights
The Civil Rights Division was created to protect the disempowered. Under Trump, it's working to dismantle gun restrictions.
www.thetrace.org
November 28, 2025 at 5:37 PM
The Civil Rights Division was created to protect the disempowered. Under Trump, it’s working to dismantle gun restrictions.
Doctor Critical of Vaccines Quietly Appointed as C.D.C.’s Second in Command
www.nytimes.com
November 26, 2025 at 12:46 AM
Reposted by Julie Parsonnet
As we get ready to shop for Thanksgiving remember the farm workers who harvest the food. We wouldn't enjoy a #Thanksgiving dinner without their hard work. #WeFeedYou
November 22, 2025 at 7:20 AM
As we get ready to shop for Thanksgiving remember the farm workers who harvest the food. We wouldn't enjoy a #Thanksgiving dinner without their hard work. #WeFeedYou
“Why invest in rigorous research when you can exploit the credibility of the nation’s leading public health agency to turn conspiracy theory into policy?” When will more people at CDC jump ship? #vaccines #publichealth #cdc
"When you remove scientists from science, you don’t get truth. You get ideology. " Signed D3- Deb, Dan, and @drdemetre.bsky.social
We are former CDC officials. RFK Jr.'s change to vaccine guidance is propaganda.
Under Secretary Kennedy, CDC materials can no longer be assumed to reflect scientific authority.
www.ms.now
November 22, 2025 at 8:00 AM
“Why invest in rigorous research when you can exploit the credibility of the nation’s leading public health agency to turn conspiracy theory into policy?” When will more people at CDC jump ship? #vaccines #publichealth #cdc
Reposted by Julie Parsonnet
"When you remove scientists from science, you don’t get truth. You get ideology. " Signed D3- Deb, Dan, and @drdemetre.bsky.social
We are former CDC officials. RFK Jr.'s change to vaccine guidance is propaganda.
Under Secretary Kennedy, CDC materials can no longer be assumed to reflect scientific authority.
www.ms.now
November 21, 2025 at 11:01 PM
"When you remove scientists from science, you don’t get truth. You get ideology. " Signed D3- Deb, Dan, and @drdemetre.bsky.social
Reposted by Julie Parsonnet
ICYMI, great piece from @jakescottmd.bsky.social yesterday:
CIDRAP Op-Ed: RSV prevention—a remarkable medical achievement finally realized
The transformation to having tools to prevent RSV happened so quickly that many haven't grasped its magnitude
www.cidrap.umn.edu/respiratory-...
CIDRAP Op-Ed: RSV prevention—a remarkable medical achievement finally realized
The transformation to having tools to prevent RSV happened so quickly that many haven't grasped its magnitude
www.cidrap.umn.edu/respiratory-...
November 20, 2025 at 9:45 PM
ICYMI, great piece from @jakescottmd.bsky.social yesterday:
CIDRAP Op-Ed: RSV prevention—a remarkable medical achievement finally realized
The transformation to having tools to prevent RSV happened so quickly that many haven't grasped its magnitude
www.cidrap.umn.edu/respiratory-...
CIDRAP Op-Ed: RSV prevention—a remarkable medical achievement finally realized
The transformation to having tools to prevent RSV happened so quickly that many haven't grasped its magnitude
www.cidrap.umn.edu/respiratory-...
Reposted by Julie Parsonnet
This is completely disgusting. Today, the CDC updated their vaccine safety page. It now says:
“The claim "vaccines do not cause autism" is not an evidence-based claim because studies have not ruled out the possibility that infant vaccines cause autism”.
“The claim "vaccines do not cause autism" is not an evidence-based claim because studies have not ruled out the possibility that infant vaccines cause autism”.
November 20, 2025 at 2:53 AM
This is completely disgusting. Today, the CDC updated their vaccine safety page. It now says:
“The claim "vaccines do not cause autism" is not an evidence-based claim because studies have not ruled out the possibility that infant vaccines cause autism”.
“The claim "vaccines do not cause autism" is not an evidence-based claim because studies have not ruled out the possibility that infant vaccines cause autism”.
Reposted by Julie Parsonnet
Nice write up of our paper here, thanks! 🧫🦠
dailyneuron.com/how-gut-micr...
dailyneuron.com/how-gut-micr...
How Gut Microbes Transmit Behavior Across Generations - Daily Neuron
A new study reveals how gut microbes transmit behavior, showing microbes alone can pass traits like activity levels between generations.
dailyneuron.com
November 14, 2025 at 7:04 AM
Nice write up of our paper here, thanks! 🧫🦠
dailyneuron.com/how-gut-micr...
dailyneuron.com/how-gut-micr...