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Andy Pekosz

@andrewpekosz.bsky.social
758 followers 150 following 146 posts

interested in respiratory viruses, primary cell cultures, virus evolution, cocktails, craft beer and soccer...order changes daily!

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Andy Pekosz @andrewpekosz.bsky.social · 16/07/2026
Registration for the Options XIII for the Control of Influenza Conference in Washington DC goes up after tomorrow. We have a great lineup of speakers across virology, clinical science, implementation, and public health. www.isrv.global/featured-eve...
isrv.global
Program - ISRV
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Andy Pekosz @andrewpekosz.bsky.social · 09/07/2026
our work on influenza B virus from 2024-25. HA antigenic drift and reassortment between IBV clades drove the emergence of this new C.3.1/re variant. Still a lot of research to do on the virus. @ceirrnetwork.bsky.social provided funding @johnshopkinsmmi.bsky.social journals.asm.org/doi/10.1128/...
journals.asm.org
Emergence of an antigenically drifted and reassorted influenza B virus at the end of the 2024–25 influenza season | mBio
Influenza B viruses are undergoing a period of antigenic and genetic expansion, with several reassorted viruses emerging that also contain point mutations in key hemagglutinin antigenic sites proximal...
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Andy Pekosz @andrewpekosz.bsky.social · 09/07/2026
another great collaboration across the Johns Hopkins CEIRR teams. this is about the IAV work we did that season...our IBV work was characterized in another manuscript i'll post about shortly. Thanks to @ceirrnetwork.bsky.social for the support and to the study enrollees who made this possible.
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Andy Pekosz @andrewpekosz.bsky.social · 26/05/2026
i hope this quote is true...
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American Society for Virology @amersocvirology.bsky.social · 26/05/2026
#ASV2026 early registration closes June 1. Don't miss out! Temple Grandin will be featured at our VIRO dinner on Monday night to discuss neurodiversity in science. More details on the entire schedule here: asv.memberclicks.net/schedule-of-...
asv.memberclicks.net
Schedule of Events
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 20/05/2026
Virologist, @johnshopkinssph.bsky.social Professor & @johnshopkinsmmi.bsky.social vice-chair @andrewpekosz.bsky.social PhD is co-chair -w/ @medschool.umaryland.edu's Justin Ortiz, MD- of @isrv.bsky.social Options XIII conference Aug 30 - Sept 2, 2026 Register and find out more here: isrv.global
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Nonia Pariente @npariente.bsky.social · 20/05/2026
Aging has effects that reshape the immune system in unique, sex-specific ways, but these differences are rarely taken into account (& most research is on males) An Essay @plosbiology.org argues that accounting for both sex and age is essential to advance personalized medicine plos.io/4wkqdgd 🧪
plos.io
The problem with one-size-fits-all medicine: Biological sex and the aging immune system
Aging has effects on the immune system that are similar in men and women, but also reshapes their immune systems in unique, sex-specific ways, however these differences are rarely taken into considera...
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Andy Pekosz @andrewpekosz.bsky.social · 20/05/2026
Such an honor to be involved with International Society for Respiratory Viruses and the planning for #OptionsXIII . If you are interested in influenza and other respiratory viruses, come to our meeting as registration is open: www.isrv.global/news/in-the-...
isrv.global
In the Spotlight: Dr Andrew Pekosz - ISRV
Co-chair of the Options XIII Conference for the Control of Influenza, Dr Andrew Pekosz is Professor and Vice Chair in the Department of Molecular Microbiology and Immunology at the Johns Hopkins Bloom...
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Andy Pekosz @andrewpekosz.bsky.social · 18/05/2026
Added a word to my vocabulary today
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OHSU-MMI @ohsummi.bsky.social · 28/04/2026
The Department of Molecular Microbiology and Immunology is looking to grow! We opened a position for an assistant or associate professor, please distribute ! facultycareers-ohsu.icims.com/jobs/39006/a...
facultycareers-ohsu.icims.com
Faculty Portal | OHSU
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Andy Pekosz @andrewpekosz.bsky.social · 19/04/2026
The Program for the Options for the Control of Influenza XIII meeting in Washington DC is coming together. Plenary and symposium talks are up and short presentations from submitted abstracts will be next. Time to register for the meeting!!! www.isrv.global/featured-eve...
isrv.global
Program - ISRV
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Andy Pekosz @andrewpekosz.bsky.social · 16/04/2026
Very sad to hear about the passing of Bernard Roizman. A real powerhouse in virology whose trainees are numerous and many have also had a profound impact on virology: www.annualreviews.org/content/jour...
annualreviews.org
The Maturation of a Scientist: An Autobiography
I was shaped by World War II, years of near starvation as a war refugee, postwar chaos, life in several countries, and relative affluence in later life. The truth is that as I was growing up I wanted ...
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Andy Pekosz @andrewpekosz.bsky.social · 14/04/2026
The abstract submission deadline for the Options for the Control of Influenza XIII Conference, taking place August 30 – September 2, 2026 in Washington, DC at the Washington DC Convention Center has been extended to Friday, April 17, 2026. Come join us!!!! www.isrv.global/featured-eve...
isrv.global
Abstract submission - ISRV
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 06/03/2026
mRNA could change how we prepare for flu season. JHSPH faculty Andy Pekosz says mRNA technology could shorten vaccine strain selection from 6–7 months to about 8 weeks. iqmediacorp.com/ExternalIfra...
iqmediacorp.com
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Andy Pekosz @andrewpekosz.bsky.social · 03/03/2026
Had a great session on virology and pathogenesis at the H5N1 preparedness forum here in downtown DC. @angierasmussen.bsky.social and I covered a wide range of topics...i had a blast and i think we were very informative as well (no slides!!!)
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Andy Pekosz @andrewpekosz.bsky.social · 12/01/2026
always a pleasure to be a guest on @publichealthpod.bsky.social , though its usually because some respiratory virus is running amok. this is episode 995 and i'm hoping i get a chance to be on #1000!
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Andy Pekosz @andrewpekosz.bsky.social · 03/11/2025
Happy Godzilla Day to all those who celebrate. Give a little love to the man-in-rubber-suit 50s-70s era Godzilla we all love - either openly or secretly! #GodzillaDay
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Elizabeth Jacobs, PhD @elizabethjacobs.bsky.social · 01/11/2025
The anti-vaccine movement has the same talking points now as it did in the 1800’s. It’s always been a rejection of science, scientists, and progress, with a soupçon of paranoia. Below is a slide for a talk I’m preparing that illustrates the identical strategies. I have more examples, too.
Slide with the title “The anti-vaccination movement has no new material”. 

Montague R. Leverson,
Lawyer, Liar, Quack
1895
Robert F. Kennedy, Lawyer, Liar, Quack
2025
Accuse expert vaccine advisory committees of pro-vaccine "bias"
"That commission was deliberately packed at its very outset..."
"The committee has been plagued with persistent conflicts of interest and has become little more than a rubber stamp for any vaccine".
Falsely state that vaccines cause death
"Vaccination has caused more deaths and diseases than ever has smallpox".
"This [COVID19 vaccine] is the deadliest vaccine ever made..."
Claim that healthcare practitioners and scientists are only in it for the money, not because of scientific evidence
"...Jenner was a mercenary charlatan whose ignorance and impatience of scientific methods were equaled only by his mendacity..."
"Doctors are being paid to vaccinate, not to evaluate. They're pressured to follow the money, not the science".
Use false and inflammatory words about vaccines
The "Blood-poisoning process of vaccination"
"They went on a search... looking for the most toxic things that they could find...to
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Soni Lacefield @lacefieldlab.bsky.social · 27/08/2025
My department at Dartmouth Medical School is hiring a tenure-track Assistant Professor. We are looking broadly for a biochemist or cell biologist. Please share this add! apply.interfolio.com/171438 @dartmouthbcb.bsky.social @futurepislack.bsky.social
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Matt Frieman @mattfrieman.bsky.social · 01/11/2025
If you need more scary fun this weekend, the documentary “A Shot In The Arm” is free on PBS until 11/9. Lots of interviews with RFK Jr pre-HHS fame. Narrated by @neildegrassetyson.com from @scotthamkennedy.bsky.social. #Virosky #LoveVirology #TruthisScarierThanFiction www.pbs.org/show/shot-in...
pbs.org
Shot in the Arm
SHOT IN THE ARM explores vaccine hesitancy historically and in the context of Covid-19.
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Andy Pekosz @andrewpekosz.bsky.social · 31/10/2025
A new preprint from the lab led by PhD student Elgin Akin is up at medRxiv: www.medrxiv.org/content/10.1... 1/6
medrxiv.org
In-vitro characterization of 2019-24 Influenza B Viruses reveals increased temperature-dependent fitness in later timepoints independent of antigenic drift
Seasonal influenza viruses continually acquire mutations that can alter both their replication efficiency and antigenic properties. While recent seasonal Influenza B viruses (IBV) are characterized as...
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Kari Debbink @karidebbink.bsky.social · 20/10/2025
Baked and decorated 100 cookies for our Fundamental Virology class! Hopefully everyone will do well on their final exam tomorrow, but if not, a cookie can’t hurt, right? @andrewpekosz.bsky.social
Photo of cookies decorated like adenovirus and HIV.
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Andy Pekosz @andrewpekosz.bsky.social · 17/10/2025
Last class in our Fundamental Virology class. Record number of students this term @karidebbink.bsky.social @johnshopkinsmmi.bsky.social @johnshopkinssph.bsky.social
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Artologica aka Michele Banks @artologica.net · 11/10/2025
Viruses and Gel electrophoresis in vibrant watercolor #sciart artologica.etsy.com
blue and green watercolor of DNA gelblue and green watercolor of 6 different viruses
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Dr. Michael D. L. Johnson @copperbae.bsky.social · 10/10/2025
I do biomedical research to help people. When people come in this space making things up, it makes it harder for people not in the field to trust the extensive studies that we do and distinguish fact from fiction. Baseless claims reduce future cures. Willful ignorance drives us backwards.
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 25/09/2025
PhD Candidate & @andrewpekosz.bsky.social Lab member Camille Wouters defends her PhD thesis tomorrow. Good Luck, Camille! 📆 Friday, Sept. 26, 2025 ⏰ 10:00 - 11:00 a.m. 📍 @johnshopkinssph.bsky.social 🏢 W2030
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 15/09/2025
A profile in @jhu.edu's HUB highlights JH-CEIRR's @ceirrnetwork.bsky.social important influenza research, led by co-directors @johnshopkinssph.bsky.social virologist & professor @andrewpekosz.bsky.social & @hopkinsmedicine.bsky.social Richard Rothman, MD More here: hub.jhu.edu/2025/09/10/j...
hub.jhu.edu
JHU Center of Excellence leads global fight against influenza
Experts at Johns Hopkins and across the country work together to better understand the behavior and characteristics of respiratory viruses, how our immune system responds to them, and how we can preve...
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 17/09/2025
Virologist, @johnshopkinssph.bsky.social Professor & @johnshopkinsmmi.bsky.social vice-chair @andrewpekosz.bsky.social explains mRNA vaccine technology on @npr.org @wfae.bsky.social Charlotte Talks Listen here for answers & clarity around COVID-19 vaccines www.wfae.org/show/charlot...
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Andy Pekosz @andrewpekosz.bsky.social · 21/08/2025
Found this book in my department mailbox yesterday. No envelope, no shipping information, no note and I was the only person to receive this "gift". Clearly, someone needs to come to my lecture on the origin and evolution of the COVID-19 pandemic to get educated on the facts.
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Artologica aka Michele Banks @artologica.net · 15/08/2025
Shop is restocked with itty-bitty paintings #sciart ko-fi.com/1626SLXL3044F neuro, micro, genetics, algorithms
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 11/08/2025
“It’s not so much that the virus has become less dangerous, it’s that we have immunity, so we fight off the virus more efficiently than we did early in the pandemic,” said @johnshopkinssph.bsky.social @jhu.edu Professor and Virologist @andrewpekosz.bsky.social www.iflscience.com/rfk-jr-pulls...
iflscience.com
RFK Jr Pulls Millions Of Dollars Of mRNA Vaccine Funding, Citing Misinformation – Here's What To Know
The Health and Human Services Secretary claimed, against all scientific consensus, that these vaccines are ineffective.
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ASM @asm.org · 08/08/2025
Requiring grant review by political appointees will continue to delay and disrupt critical research and interferes with scientists’ ability to help protect the nation’s health and security. Read our statement: asm.org/press-releas...
asm.org
ASM Responds to Improving Oversight of Federal Grantmaking
ASM calls on the Trump Administration to put science ahead of politics and immediately end its plan to force scientific grants to be reviewed by political appointees.
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Andy Pekosz @andrewpekosz.bsky.social · 29/07/2025
Congratulations to Jerome Edwards on defending his PhD thesis on mechanisms driving the attenuation of Live attenuated measles vaccine virus replication. Jerome did great things and is yet another example of Diane Griffin's mentoring. @johnshopkinsmmi.bsky.social @johnshopkinssph.bsky.social
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Dr Emma Hodcroft @firefoxx66.bsky.social · 25/07/2025
📢New job posting!📢 Are you excited by the idea of building global infrastructure to make pathogen sequencing more accessible, interpretable, and equitable? 🧑🏻‍💻🧬 My group at @swisstph.ch has an opening working with ARTIC2, @pathoplexus.org, & Loculus - read on! 1/5
An image showing the ARTIC and Pathoplexus logos connected by blue lines, with the text "Hiring: post-doc/software engineer" and "Global open-source pathogen tools" and "Join Swiss TPH, Work on ARTIC2 and Pathoplexus, Basel, Switzerland"
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Artologica aka Michele Banks @artologica.net · 21/07/2025
There it is artologica.etsy.com/listing/4338...
gray and black brain painting with curving lines and text - there is no such thing as artificial intelligence
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Eric Topol @erictopol.bsky.social · 25/07/2025
Covid vaccination saved ~2.5 million lives between 2020-2024 jamanetwork.com/journals/jam...
jamanetwork.com
Lives and life-Years Saved From COVID-19 Vaccination
This comparative effectiveness study analyses the number of lives and life-years saved worldwide among those who had been vaccinated during the COVID-19 pandemic 2020-2024 years.
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Andy Pekosz @andrewpekosz.bsky.social · 25/07/2025
Our two summer students wrapped up their stays in the laboratory with posters on the influenza viruses that circulated this past year. One preprint is up and another is coming. lots of thanks to @ceirrnetwork.bsky.social and @johnshopkinsmmi.bsky.social for support and collaborations!
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Andy Pekosz @andrewpekosz.bsky.social · 25/07/2025
A new preprint from the lab describing an influenza B virus that emerged late in the 2024-25 season that underwent both reassortment and antigenic drift with @eakin.bsky.social leading my team in this collaboration with Heba Mostafa at Johns Hopkins Medicine ‪ www.biorxiv.org/content/10.1...
biorxiv.org
Emergence of an Antigenically Drifted and Reassorted Influenza B Virus at the end of the 2024-25 Influenza Season
BACKGROUND Influenza B virus is a significant contributor to annual total and severe cases of influenza, particularly in the young and elderly. Coupling whole virus genome sequencing with the monitori...
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Andy Pekosz @andrewpekosz.bsky.social · 17/07/2025
1/5 The lab’s first paper on bovine H5N1 looks at preexisting antibody immunity in the human population and how influenza vaccination and infection effect it. @johnshopkinsmmi.bsky.social @johnshopkinssph.bsky.social @ceirrnetwork.bsky.social www.biorxiv.org/content/10.1...
biorxiv.org
Low levels of H5N1 HA and NA antibodies in the human population are boosted by seasonal A/H1N1 infection but not by A/H3N2 infection or influenza vaccination
An increase in the number of human cases of influenza A/H5N1 infection in the US has raised concerns about the pandemic potential of the virus. Preexisting population immunity is a key determinant for...
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Andy Pekosz @andrewpekosz.bsky.social · 20/06/2025
ASM lifetime achievement award winner Susan Weiss getting interviewed by her colleague Brenda Hogue ASM Microbe2025 #ASMicrobiology
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Andy Pekosz @andrewpekosz.bsky.social · 17/06/2025
about to get on WVON Chicago with Cleopatra Draper to discuss recent changes at ACIP and in vaccine recommendations. www.wvon.com/line-up/
wvon.com
Line Up - WVON
6:00 – 9:00 AM CST WVON MORNING SHOW W/ RUFUS WILLIAMS
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Andy Pekosz @andrewpekosz.bsky.social · 12/06/2025
Some really interesting work coming from the late Diane Griffin’s laboratory driven by @johnshopkinsmmi.bsky.social PhD student Jerome Edwards that looks at the mechanisms behind the attenuation of the live, attenuated measles vaccine or LAMV. www.biorxiv.org/content/10.1...
biorxiv.org
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Andy Pekosz @andrewpekosz.bsky.social · 03/06/2025
End of our COVID-19 Era. We are leaving the laboratory space that was established in February, 2020 to increase our capacity to do COVID-19 research.
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 02/06/2025
"Population immunity, either from vaccination or previous infection, also tends to wane by the summer," @johnshopkinssph.bsky.social Professor & Virologist @andrewpekosz.bsky.social, tells TODAY.com. #COVID #vaccination #PopulationImmunity #NB.1.8.1 #variant www.today.com/health/coron...
today.com
A New COVID Variant, NB.1.8.1, Is Starting to Spread in the U.S. What Are Its Symptoms?
NB.1.8.1 recently caused surges in China and other parts of Asia. Will cases spike in the US this summer? Here's what we know about the new variant so far.
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Ervin Fodor @efodor.bsky.social · 26/05/2025
There is still time to apply; join our team to work on influenza virus replication mechanisms!
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Artologica aka Michele Banks @artologica.net · 25/05/2025
Lol just tried to talk to a virologist about artistic license in #sciart and she was not having it 😂
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Andy Pekosz @andrewpekosz.bsky.social · 24/05/2025
Anyone going to Artscape in Baltimore this weekend who is interested in science art needs to find their way to the @artologica.net booth. i already see things i want...
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Neeltje van Doremalen @neeltje.bsky.social · 23/05/2025
The first manuscript by my lab has been published🥳🎉 We investigated disease progression in B6 mice inoculated with bovine H5N1 or VN1203 via aerosols. Interestingly, although virus replication in the lung was similar, we observed drastic differences in neuroinvasion and pathology. rdcu.be/enhQU
rdcu.be
Enhanced neurotropism of bovine H5N1 compared to the Vietnam H5N1 isolate in C57BL/6J mice
npj Viruses - Enhanced neurotropism of bovine H5N1 compared to the Vietnam H5N1 isolate in C57BL/6J mice
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Dept of Molecular Microbiology & Immunology at Johns Hopkins @johnshopkinsmmi.bsky.social · 21/05/2025
“Because there are so many people who have been #vaccinated and #infected, there is a high amount of #immunity in the population,” said @johnshopkinssph.bsky.social @andrewpekosz.bsky.social “I think we’re also seeing that as a way to dampen the spread of the virus.” www.wsj.com/health/healt...
wsj.com
Covid Is Quiet Right Now, but Doctors Are Vigilant for a Summer Rise
Data shows around 300 deaths a week in mid-April as the FDA rolls out more-stringent vaccine approval rules.
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Andy Pekosz @andrewpekosz.bsky.social · 21/05/2025
Worked on a manuscript with @meghandavisdvm.bsky.social this morning, and now I see her receive the prestigious Stebbins award for public health teaching and contributions @johnshopkinssph.bsky.social . Congratulations!!!
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