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Jon Mosser

@jonmosser.com
1K followers 757 following 290 posts

Pediatric infectious disease doc | global health researcher | modelling disease burden and intervention coverage from local to global scales | #vaccines, #VPDs, #NTDs, #malaria, #anemia, #hemoglobinopathies, #geospatial analysis | he/him | opinions my own

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Jon Mosser @jonmosser.com · 24/12/2025
Found a #vaccine mural downtown in #YorkPA while home for the holidays. I believe that these murals are based on drawings by Lewis Miller, Pennsylvania Dutch folk artist from the early 19th century.
An old mural of a man in a blue coat labeled "Dr. Kennedy" and a child in a yellow dress looking up at him. Text reads: "1799. Dr. Kennedy he waxanate the children with matter A remedy to cure the smallpox."
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PIDS @pidsociety.bsky.social · 05/12/2025
The Pediatric Infectious Diseases Society has issued the following statement on our deep concerns regarding the Advisory Committee on Immunization Practices December meeting and its impact on public health in the United States. pids.org/2025/12/05/p...
White text on red background with PIDS logo at bottom
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Washington State Department of Health @doh.wa.gov · 06/12/2025
WCHA disagrees with CDC’s Advisory Committee’s change to decades-long vaccine recommendation that has reduced pediatric hepatitis B infections by 99 percent. doh.wa.gov/newsroom/wes...
doh.wa.gov
West Coast Health Alliance, WA DOH, and Leading National Medical Organizations Continue to Recommend Hepatitis B Vaccination for Newborns
For immediate release: December 5, 2025 (25-145) Contact: DOH Communications
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IDSA @idsainfo.bsky.social · 05/12/2025
The ACIP decision to discontinue the recommendation for a universal hepatitis B birth dose vaccine will cause harm. As the federal government continues to fail children's health, families can rely on our nation's physicians to continue to put children's health first.
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Jeremy Faust, MD @jeremyfaust.bsky.social · 06/12/2025
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...
insidemedicine.substack.com
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.
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Jon Mosser @jonmosser.com · 05/12/2025
#ACIP votes to change the #hepatitisB #vaccine birth dose recommendation, ending the universal birth dose policies that have almost eliminated neonatal hepatitis B infection, cut pediatric infections by more than 95%, and prevented more than 6 million infections / a million hospitalizations.
cidrap.umn.edu
New review finds no evidence to support delaying universal hepatitis B birth-dose vaccination
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Jon Mosser @jonmosser.com · 05/12/2025
Congratulations to Oghenebrume Wariri, MD, PhD for this new publication in Vaccine:X: "Vaccination timeliness is a key measure of immunisation system performance: A call to address priority research, policy and practice issues". Very thankful to have been part of this authorship team.
sciencedirect.com
Vaccination timeliness is a key measure of immunisation system performance: A call to address priority research, policy and practice issues
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Jon Mosser @jonmosser.com · 03/12/2025
Seattle has one of the biggest Somali populations in the country. I've had the privilege to work with loving, hardworking Somali families and patients + caring, brilliant Somali doctors during my time here. They belong here in our communities. Bigotry and xenophobia do not.
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Jon Mosser @jonmosser.com · 04/11/2025
New GBD 2023 estimates of the burden of #Chagas disease, a #NTD caused by T. cruzi and transmitted by triatomine bugs, blood, or congenitally. The chronic phase, often decades after infection, causes severe heart failure, arrhythmias, and megaviscera. #GBD2023 #ChagasDisease #NTDs #IDSky
thelancet.com
Global, regional, and national burden of Chagas disease, 1990–2023: a systematic analysis for the Global Burden of Disease Study 2023
The GBD 2023 Chagas disease estimates are notably higher than previous GBD estimates, reflecting additional data and methodological improvements, and those published by the Pan American Health Organiz...
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Jon Mosser @jonmosser.com · 28/06/2025
Out now in @plos NTDs - overlap between #LF prevalence and #malaria ITN access / use. Congrats to Joanna Whisnant and the authorship team. This has been a long time coming and great to see it out! #NTDs #episky #malaria #lymphaticfilariasis
doi.org
Examining the overlap in lymphatic filariasis prevalence and malaria insecticide-treated net access-use in endemic Africa
Author summary Lymphatic filariasis is a vector-borne disease that can cause significant disability. There is evidence that insecticide-treated nets used by malaria programs can contribute to lymphati...
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Jon Mosser @jonmosser.com · 25/06/2025
“In the face of demonstration that vaccines are the single most lifesaving technology for children, over half a century, he is asserting a position that the U.S. will not support vaccination. This is utterly disastrous for children around the world and for public health.” -- @agawande.bsky.social
nytimes.com
Kennedy Withdraws U.S. Funding Pledge to International Vaccine Agency
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Jon Mosser @jonmosser.com · 25/06/2025
"Whatever progress we’ve made could be reversed if we don’t maintain and build on our successful #immunization efforts to date.” - Prof. Art Reingold, @berkeleypublichlth.bsky.social. Read more @statnews.com
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Jon Mosser @jonmosser.com · 25/06/2025
"Falling global #vaccine coverage, an increase in the numbers of children receiving no vaccines, and delays in vaccination mean that more children will be hospitalised, permanently damaged and die from fully preventable diseases if the trend is not reversed." - Prof. Andrew Pollard
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Jon Mosser @jonmosser.com · 25/06/2025
The evidence couldn't be more clear: * #Vaccines are safe. * #Vaccines are effective. * #Vaccines save lives. This is the moment for a renewed global commitment to immunization at all levels.
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Jon Mosser @jonmosser.com · 25/06/2025
Now out in @thelancet.com: our group's analysis of global vaccination coverage trends, the impact of the COVID pandemic, and progress towards global targets. Congratulations to all of our co-authors - this was a massive amount of work and comes at a particularly critical time. Highlights in 🧵
thelancet.com
Global, regional, and national trends in routine childhood vaccination coverage from 1980 to 2023 with forecasts to 2030: a systematic analysis for the Global Burden of Disease Study 2023
Our estimates of current vaccine coverage and forecasts to 2030 suggest that achieving IA2030 targets, such as halving zero-dose children compared with 2019 levels and reaching 90% global coverage for...
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Jon Mosser @jonmosser.com · 24/06/2025
"The #GatesFoundation will announce ahead of the #Gavi fundraising in Brussels on Wednesday that it will match — but not go beyond — the $1.6bn it’s giving during the organisation’s current funding cycle."
ft.com
Bill Gates says he will not fill vaccine funding gap left by aid cuts
Billionaire philanthropist says his foundation will maintain funding at previous levels ahead of pledging event
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Gavi @gavi.org · 17/06/2025
🗓️ 8 DAYS TO GO 🗓️ Every bold global health milestone began with one moment of collective will. In 8 days, world leaders will face that moment. Will they rise to protect 500 million children and build the strongest immunisation push in history? #ForOurFuture
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Jon Mosser @jonmosser.com · 10/06/2025
The #Pediatric #InfectiousDisease Society has released a statement on the mass removal of all ACIP members. "Removing vaccine experts from developing thoughtful policy will harm all Americans, particularly our children."
pids.org
PIDS Deeply Troubled By Disregard for Science in ACIP Firings – Pediatric Infectious Diseases Society
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Jon Mosser @jonmosser.com · 11/04/2025
@who.int just released the results of a rapid pulse-taking survey on the impact of cuts to official development assistance (ODA). More than 40-50% of countries already reporting moderate-severe service disruptions to #HIV, #TB, #Malaria, #vaccine programs. #episky #idsky
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ProPublica @propublica.org · 30/03/2025
This week, as the number of confirmed measles cases rose to 483, the CDC buried a report that would’ve stressed the importance of getting vaccinated. The move was “not normal at all,” one agency staff member said. By @sheinvestigates.bsky.social
propub.li
The CDC Buried a Measles Forecast That Stressed the Need for Vaccinations
The move — along with the CDC’s explanation — is a sign that the nation’s top public health agency may be falling in line under HHS Secretary Robert F. Kennedy Jr., a longtime critic of vaccines.
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Jon Mosser @jonmosser.com · 27/03/2025
The HHS investigation into the long-debunked #measles #vaccine / autism (non-)connection continues to ramp up. “To me, the big shame is that with budget cuts, we are not ramping up research into what is actually causing autism,” Mr. Hunter said. #idsky #pedsidsky #episky
nytimes.com
RFK Jr. Turns to a Discredited Vaccine Researcher for Autism Study
David Geier has been hired as a senior data analyst at H.H.S. According to several people, he will examine any potential links between vaccines and autism that were debunked long ago.
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Jon Mosser @jonmosser.com · 26/03/2025
@nature.com just published a list of "research activities that NIH no longer supports", including studies on #vaccine hesitancy, #climatechange, #DEI, " #transgender issues", China, and South Africa. #episky #medsky #idsky #pedsidsky
nature.com
Exclusive: NIH to cut grants for COVID research, documents reveal
Studies on climate change and South Africa are also on the latest list of grants to be terminated, according to updated documents obtained by Nature.
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Jon Mosser @jonmosser.com · 26/03/2025
The US government is stopping support for Gavi, which plays a massive role in providing #vaccines to children around the world. The US provides 13% of Gavi's budget. #episky #idsky #pedsidsky
nytimes.com
U.S. to End Vaccine Funds for Poor Countries
A 281-page spreadsheet obtained by The Times lists the Trump administration’s plans for thousands of foreign aid programs.
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The Lancet @thelancet.com · 20/03/2025
Despite a substantial decrease in solid fuel use for cooking worldwide, exposure to household air pollution (HAP) remains a major global risk factor. A #GBD study calls for renewed efforts & international investments to reduce the burden of HAP: tinyurl.com/3w94ysy9 @ihmeuw.bsky.social
World map showing the percentage of global population exposed to household air pollution from solid cooking fuels, 2021. Copyright: 2025 The Author(s). Published by Elsevier Ltd. CC BY 4.0.
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David Higgins, MD, MPH @drhigginsmd.bsky.social · 20/03/2025
MMR vaccines do not cause autism—the evidence is overwhelming. I teamed up with @unbiasedscipod.bsky.social to break down decades of research, covering dozens of studies with millions of children. open.substack.com/pub/theunbia...
open.substack.com
A Comprehensive Review of the MMR Vaccine Studies: Many Years and Millions of People Reveal NO Link to Autism
Time to Move Forward: What Decades of Consistent Evidence Should Tell Us
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Senator Patty Murray @murray.senate.gov · 11/03/2025
During the worst measles outbreak in DECADES, we ABSOLUTELY must invest funding, time, & energy toward understanding why some Americans are hesitant to get the vaccines they need. We want people to get vaccinated so they don't die. It makes NO sense to eliminate this research.
washingtonpost.com
NIH to terminate or limit grants related to vaccine hesitancy and uptake
The order covers more than 40 awards to researchers around the country seeking to understand why vaccine acceptance has declined.
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Jon Mosser @jonmosser.com · 11/03/2025
"Mr. Kennedy said [HHS] would conduct clinical trials on several unproven treatments for measles, including a steroid, budesonide; an antibiotic called clarithromycin; and cod liver oil". I'm sorry - exactly how many cases of #measles are we planning to have in the USA, if we're funding RCTs now?
nytimes.com
Kennedy Links Measles Outbreak to Poor Diet and Health, Citing Fringe Theories
In a recent interview, the health secretary also suggested that the measles vaccine had harmed children in West Texas, center of an outbreak.
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Jon Mosser @jonmosser.com · 05/03/2025
I can't even with this. Effective interventions to keep kids from dying of measles: 1. The measles vaccine 2. The measles vaccine 3. The measles vaccine 4. The measles vaccine ... 10. Good supportive care; vitamin A treatment. (Not listed: cod liver oil) #idsky #pedsidsky #pedssky
nytimes.com
As Measles Spreads, Kennedy Embraces Remedies Like Cod Liver Oil
In an interview, the H.H.S. secretary claimed that unconventional treatments were helping patients but did not mention vaccination.
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The Ferrari Lab @theferrarilab.bsky.social · 28/02/2025
Measles, even in a reasonably vaccinated population, can spread among the unvaccinated about as fast as COVID-19 spread in the beginning of 2020. That was fast enough for us to be concerned in 2020. It's fast enough for us to be concerned in 2025.
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Paul Sax @paulsaxmd.bsky.social · 27/02/2025
If someone thinks the measles outbreak and childhood death in Texas are "not unusual" or "happens all the time", they are deeply misinformed. h/t @adamratnermd.bsky.social for the inspiration. blogs.jwatch.org/hiv-id-obser...
blogs.jwatch.org
Tragic Childhood Death from Measles Reminds Us That Some Don't Understand Either the Medical Significance or the Human Heart
My ID colleague Dr. Adam Ratner, Chief of Pediatric ID at NYU Medical Center, just published an insightful and remarkably timely book called Booster Shots:  The Urgent Lessons of Measles and the Uncer...
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Jon Mosser @jonmosser.com · 28/02/2025
Absolute, unspeakable cruelty. “People will die,” said Dr. Catherine Kyobutungi, executive director of the African Population and Health Research Center, “but we will never know, because even the programs to count the dead are cut.” #episky #medsky
nytimes.com
U.S. Terminates Funding for Polio, H.I.V., Malaria and Nutrition Programs Around the World
Here are some of the 5,800 contracts the Trump administration formally canceled this week in a wave of terse emails.
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Jon Mosser @jonmosser.com · 27/02/2025
It's difficult to overstate what we're losing with the end of the DHS program. These surveys anchor our understanding of health around the world, especially in places where good data are missing and where global inequities in health are most acute. What a catastrophic, short-sighted decision.
buff.ly
Trump Administration Ends Global Health Research Program
The Demographic and Health Surveys were the only sources of reliable information in many countries on metrics such as mortality, nutrition and education.
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Congresswoman Jasmine Crockett @crockett.house.gov · 27/02/2025
This news truly breaks my heart. We are calling on HHS to take immediate action. Secretary Kennedy needs to bring back weekly measles tracking from the CDC, rehire the health experts, and roll out a serious vaccine campaign. Our kids' safety is on the line! abcnews.go.com/Health/1st-m...
abcnews.go.com
Measles death of unvaccinated child in Texas outbreak is 1st fatality in US in a decade
An unvaccinated school-aged child in Texas has died of measles, the first associated with an outbreak that has infected more than 100 people.
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Helen Branswell 🇨🇦 @helenbranswell.bsky.social · 27/02/2025
#HHS has canceled the March meeting of outside experts who were to advise #FDA on what next winter's #flu shots should target. The irony of this: Canceling #VRBPAC makes the US more reliant on the WHO-led strain selection process. www.statnews.com/2025/02/26/f...
statnews.com
FDA cancels vaccine advisory committee meeting
The advisory committee meeting is a critical resource for vaccine makers trying to figure out which flu strains to include in their shots for the next flu season.
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The Ferrari Lab @theferrarilab.bsky.social · 26/02/2025
Someone has died of measles infection in the United States. This is horrific.
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ProPublica @propublica.org · 20/02/2025
NEW: Pregnancy became far more dangerous in Texas after the state banned abortion, according to ProPublica’s first-of-its-kind analysis, which found the sepsis rate for women hospitalized as they miscarried in the 2nd trimester shot up by more than 50%. propub.li/43487Tj
propub.li
Texas Banned Abortion. Then Sepsis Rates Soared.
ProPublica’s first-of-its-kind analysis is the most detailed look yet into a rise in life-threatening complications for women experiencing pregnancy loss under Texas’ abortion ban.
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Jon Mosser @jonmosser.com · 20/02/2025
And here we go. A reminder that #ACIP recommendations from late January 2025 are archived here: web.archive.org/web/20250122... Reliable information about #vaccines for providers can also be found at the excellent www.immunize.org. #pedsky #medsky #pedsidsky
politico.com
RFK Jr. prepares shake-up of vaccine advisers
The health secretary is planning to remove members of a panel that recommends vaccines if he sees conflicts of interest.
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MplsShLee @shannaleehorvik.com · 16/02/2025
"In this toolkit, we help you understand what families want and need to know, how best to communicate with them, and tools to make it all much easier. You’re a health hero and the single most influential group of people when it comes to vaccines." www.voicesforvaccines.org/toolkits/hea...
voicesforvaccines.org
Healthcare Providers Toolkit: Introduction
A strong recommendation from a healthcare provider is the single most influential factor in someone deciding to vaccinate - learn how you can make a difference.
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Jon Mosser @jonmosser.com · 17/02/2025
And where are the insurance companies? Handcuffing #flu #vaccine development & distribution will result in unnecessary hospitalizations and health care expenditure. Those in turn will cut into their almighty bottom line.
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Catherine Rampell @crampell.bsky.social · 16/02/2025
On Friday night, HHS ordered CDC to take down all flu vaccine campaign materials from its website. Materials are starting to come down. For example, a campaign explaining that flu shot can reduce flu severity from "wild to mild" is now offline. Left image is from Friday, right is now Meanwhile...
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Jon Mosser @jonmosser.com · 14/02/2025
The one thing that brings me hope on this very dark day for our nation's health is this: The most important factor in a patient's decision to get vaccinated is a strong recommendation from a health care provider who they trust. #pedsky #medsky #idsky #pedsidsky
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Alastair McAlpine, MD @alastairmca30.bsky.social · 11/02/2025
Govt closes all HIV clinics in Uganda thanks to Elon Musk and Donald Trump interfering with USAID. Regardless of your thoughts on countries relying on international aid, this is NOT how you treat poor people. Shameful.
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Matt Barber @biobarber.bsky.social · 08/02/2025
Executive wants to frame the NIH indirects cut as $4B in savings. But given that NIH returns $2.5 on every $1 investment, this would actually cost US economy a net $6 BILLION (per year!). Not to mention the human costs of wrecking education and research sectors and the communities they serve.
nih.gov
Direct Economic Contributions
NIH directly supports the economy through investments in research institutions and job formation.
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Senator Patty Murray @murray.senate.gov · 08/02/2025
This is what amounts to an ILLEGAL & indiscriminate funding cut for research centers everywhere. It will mean shuttering labs across the country, layoffs in red & blue states, and derailing lifesaving research on everything from cancer to opioid addiction. We all need to speak out to save lives.
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Jon Mosser @jonmosser.com · 08/02/2025
So what is the opposite of an Age of Enlightenment, just out of curiosity?
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Senator Patty Murray @murray.senate.gov · 06/02/2025
The CDC is already painfully understaffed. This reckless layoff threat and the constant bullying of federal workers by Trump & Elon—in the middle of a Bird Flu crisis no less—could put lives at risk. www.washingtonpost.com/politics/202...
washingtonpost.com
Health agencies told to rank some workers as fear of layoffs grows
Leaders have been told urgently to rank thousands of their employees who are in probationary periods, with as many as 40 percent to be deemed not mission-critical.
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Atul Gawande @agawande.bsky.social · 02/02/2025
@USAID is enduring an unlawful shutdown, purge, and dismantling. It’s thrown its vital work into turmoil—based on spurious, absurd, and willfully slanted attacks. Here's what’s real: the massive and growing harm now being caused. www.nytimes.com/2025/02/01/h...
nytimes.com
Health Programs Shutter Around the World After Trump Pauses Foreign Aid (Gift Article)
Lifesaving treatment and prevention programs for tuberculosis, malaria, H.I.V. and other diseases cannot access funds to continue work.
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Dave Levitan @davelevitan.bsky.social · 02/02/2025
The USAID stuff is just preposterously dark. A tiny sliver of the government’s budget, literally saving thousands of lives, pulled from one day to the next out of pure indifferent cruelty.
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IDSA @idsainfo.bsky.social · 31/01/2025
The removal of #HIV- and #LGBTQ-related resources from the websites of CDC and other health agencies is deeply concerning. Access to this information is crucial for ID and HIV health care professionals. Our full statement: buff.ly/42AO8LI
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Dr. Maya @drdrmaya.bsky.social · 31/01/2025
PLEASE SHARE WIDELY #medsky #IDsky #obgynsky #pedsky CDC STI treatment guidelines have been taken down. They are archived here 👇 web.archive.org/web/20250131...
web.archive.org
Site Index
STIs are common. Many are curable - all are preventable.
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