Casey Middleton, PhD @caseymiddleton.bsky.social · 12hDear authors, If you submit a manuscript without line numbers, I can only assume you are actively trying to destroy my life. Hatefully, Reviewer #3 😭 000
Casey Middleton, PhD @caseymiddleton.bsky.social · 10/09/2026Interested in creating community and finding collaboration opportunities in infectious disease dynamics? Join the GSIDD Connect Series! 📆 Friday, Sept. 11 🕐 1pm ET 🔗 www.gsidd.org/eventsgsidd.orgEvents | GSIDD 020
Casey Middleton, PhD @caseymiddleton.bsky.social · 27/08/2026Ten years ago, Beans was put up for adoption because a family member was abusing him. If you ask me, she should’ve divorced the man and kept the dog. Happy National Dog Day, Beanbo Doggins. You’re the coolest little dude I ever met! 150
Reposted by Casey Middleton, PhDThe Tennessee Holler @thetnholler.bsky.social · 29/07/2026Literally this. They’re acting like people didn’t die. Like we all didn’t live through it and see it with our own eyes, and Trump wasn’t President at the time. It’s wild to watch. 1122774691
Reposted by Casey Middleton, PhDStephen Kissler @skissler.bsky.social · 29/07/2026I'm excited to share a preprint that's been years in the making: the idea took shape during the COVID pandemic. Anecdotally, people would sometimes spread COVID at work but not at home, and vice versa. Why? One explanation would be if infectiousness is fleeting...medrxiv.orgHow bursty infectiousness shapes epidemic dynamicsAn epidemic’s expected course is determined by the magnitude and timing of a typical person’s infectiousness — captured, in turn, by the basic reproduction number and the generation-time distribution.... 24317
Reposted by Casey Middleton, PhDKarly Kingsley @karlykingsley.bsky.social · 29/07/2026If you’re watching Fauci’s testimony remember that science isn’t an ideology. It doesn’t lie. It evolves. COVID-19 was a once-in-a-century pandemic caused by a brand-new virus, recommendations changed because the evidence changed. That’s not deception. That’s how it works. 412117723141
Casey Middleton, PhD @caseymiddleton.bsky.social · 09/07/2026Throughout your scientific career, you will read hundreds of dense manuscripts. 📚 As the literature stack piles up, remembering exactly where you saw a specific methodology or finding can be tough. Here is how I use a relational database to keep track of it all (and et al.). 👇 1122
Reposted by Casey Middleton, PhDCarl T. Bergstrom @carlbergstrom.com · 04/07/20261. A bit of evolutionary biology. I'm really intrigued by a new perspective piece from Steve Frank that explores connections between how natural selection creates systems that generalize and recent work in machine learning about the surprising capabilities of massively overparameterized systems.academic.oup.comGeneralization as the great leap in evolvability: insights from machine learningAbstract. Natural selection encodes learned information in the genome. Learned solutions may be tuned specifically to past challenges, failing in altered e 9402119
Reposted by Casey Middleton, PhDIDDjobs @iddjobs.org · 03/07/2026PhD position (Melbourne, Australia) Mechanistic modelling of the epidemic dynamics of vector-borne zoonotic diseases in Australia with Oliver Eales, Freya Shearer, Marya Potorek at University of Melbourne More details: iddjobs.org/jobs/2561 097
Reposted by Casey Middleton, PhDDan Larremore @danlarremore.bsky.social · 08/06/2026Calculations on the containment of Bundibugyo ebolavirus with @caseymiddleton.bsky.social: www.medrxiv.org/content/10.6... We estimate: 1. Symptom screening misses 68%–86% of infected travelers. 2. A 7d post-travel quarantine misses 26% of infections. → 18%–23% missed by combined measures. 1/ 2102
Casey Middleton, PhD @caseymiddleton.bsky.social · 04/06/2026Today's academic birthday gifts: ✨ Opinion piece rejected. 🏅 Tiny change required for resubmission of preprint. 🏆 Mandatory Disclosure of External Professional Activities due. Another day in paradise 🌴😎 030
Reposted by Casey Middleton, PhDYour Local Epidemiologist @ylepidemiologist.bsky.social · 04/06/20266/ We eliminated measles 26 years ago. We eradicated New World Screwworm 60 years ago. Keeping diseases at bay requires sustained investment, trained people, and ongoing engagement. 420849
Casey Middleton, PhD @caseymiddleton.bsky.social · 01/06/2026Last night, we celebrated two birthdays: Cecil Earnest Middleton, born May 23, 1941 Casey Elaine Middleton, born June 4, 1996 Highly recommend celebrating your birthday with your granddad ✨ 040
Reposted by Casey Middleton, PhDHelen Branswell 🇨🇦 @helenbranswell.bsky.social · 20/05/2026This is such a moving piece. If your interested in #Ebola — the damage it causes, the trauma families and communities and responders face during and after an outbreak — please read it. www.statnews.com/2026/05/20/e...statnews.comI saw Ebola as both doctor and patient. I wish people cared more about the Africans I worked alongside“As another Ebola outbreak unfolds, we cannot repeat the mistakes of the past,” writes Krutika Kuppalli. 213975
Casey Middleton, PhD @caseymiddleton.bsky.social · 19/05/2026🚨 Disease modelers: Do you use empirical VE estimates interchangeably to inform vaccine effect parameters? Me too, and it’s distorting our predictions. VE estimates often do not align with model parameters. We discuss these pitfalls & solutions in our new preprint: arxiv.org/abs/2605.18571 🧵👇arxiv.orgIncorporating vaccine effects into epidemiological models: common pitfalls and solutionsIncorporating vaccination into mathematical models appears deceptively simple: models integrate vaccine-derived protections, such as reduced susceptibility to infection, using parameters informed by e... 22112
Reposted by Casey Middleton, PhDAdam Kucharski @adamjkucharski.bsky.social · 05/05/2026My four year old: I do number maths. Adults do maths with letters they don’t know. Me: Actually, yes, they do! Him: Why don’t they know all the letters yet? I do. 0323
Casey Middleton, PhD @caseymiddleton.bsky.social · 29/04/2026Today's micro-feminist win: changed my email signature from Thanks so much, to Thanks, Please hold your applause 🏅 020
Reposted by Casey Middleton, PhDAdam Kucharski @adamjkucharski.bsky.social · 24/04/2026Claude has started refusing to give citations. Yes, this technically means fewer hallucinations. But it doesn’t mean that AI is now hallucination-free in the way a careful researcher is. 73010
Reposted by Casey Middleton, PhDMallory Harris, PhD @malar0ne.bsky.social · 09/04/2026For years, Jay Bhattacharya has been upset at the MMWR for publishing findings that run contrary to his predetermined conclusions (e.g., on immunity after covid vaccination) and his political agenda. Now he's in a position to prevent those findings from being published. 13719
Reposted by Casey Middleton, PhDJoshua Weitz @joshuasweitz.bsky.social · 19/02/2026"This is not reversing the damage. It is spending more than we spent on WHO to create an institution that’s unlikely to survive and will certainly accomplish only a fraction of what we did by working together with the entire world.” - Atul Gawande, @agawande.bsky.social 🎁 wapo.st/4tKRwyMwapo.stAfter leaving WHO, Trump officials propose more expensive replacement to duplicate itHHS proposes spending $2 billion a year to re-create systems the U.S. accessed through the WHO at a fraction of the cost, according to officials briefed on the matter. 084
Reposted by Casey Middleton, PhDMallory Harris, PhD @malar0ne.bsky.social · 27/01/2026In a new preprint, we combine modeling with school-level vaccine data to contextualize the risk of 'breakthrough infections' and impacts on the ongoing US measles outbreak. #idsky #episky www.medrxiv.org/content/10.6...medrxiv.orgInterpreting Breakthrough Infections Given Assortative Mixing of Partially Vaccinated PopulationsDeclining vaccine coverage across the United States has increased the risk of outbreaks of vaccine-preventable diseases. Even when vaccines have low primary failure rates, conventional epidemic theory... 15123
Casey Middleton, PhD @caseymiddleton.bsky.social · 26/01/2026Models can be powerful tools to study associations in data. But do they reliably reveal the truth? 🚨 In our new study, @danlarremore.bsky.social and I show that the model used to estimate VE from test-negative designs (TNDs) may not translate to other correlates of risk. doi.org/10.1093/aje/...doi.orgStatistical methods for estimating the protective effects of immune markers using test-negative designsAbstract. While widely used to study vaccine effectiveness, test-negative designs (TNDs) also provide a platform for identifying and quantifying immunologi 1177
Casey Middleton, PhD @caseymiddleton.bsky.social · 25/01/2026If you live outside of Minneapolis but want to support the community, Lisa and her husband are doing boots on the ground work to protect families! Donate to their work via Venmo @lisa-szabo-1 011
Casey Middleton, PhD @caseymiddleton.bsky.social · 20/01/2026Sometimes it feels really heavy to pretend everything is okay in our country and just keep doing research. It seems like the best thing I can do for my career is the worst thing I can do as a human being. 020
Casey Middleton, PhD @caseymiddleton.bsky.social · 14/01/2026It really says something about the state of our country that I no longer believe banning LED headlights should be a top federal government policy priority… But I still hate them, to be clear 😑 151
Reposted by Casey Middleton, PhDThe Tennessee Holler @thetnholler.bsky.social · 07/01/2026🎯 22695312728
Reposted by Casey Middleton, PhDStephen Kissler @skissler.bsky.social · 06/01/2026How can diagnostic tests for infection support public health – and what challenges do we need to overcome to maximize their potential? Kristin Nelson, Tyler Brown, and I have a new article out digging into this exciting, complex issue: www.tandfonline.com/doi/full/10....tandfonline.comDiagnostic testing as a public health intervention: challenges and opportunitiesPublished in Future Virology (Vol. 20, No. 12, 2025) 184
Casey Middleton, PhD @caseymiddleton.bsky.social · 05/01/2026I have recently taken up watercolor as a relaxing after-work hobby. This piece captures a subtle sunset over the lake at my parents’ house in Tennessee! 130
Reposted by Casey Middleton, PhDYour Local Epidemiologist @ylepidemiologist.bsky.social · 15/12/20256/ This is not a debate. That data is crystal clear. Since the 1996 Port Arthur massacre, Australia’s buyback program and strict licensing have kept mass shootings to ~0–1 per year. The U.S. has about 400–650 mass shootings annually and over 46,000 gun deaths each year. It’s not even close. 1163
Reposted by Casey Middleton, PhDJuliana Taube @julianataube.bsky.social · 08/12/2025The MIDAS Trainee Executive Committee is recruiting new members for 2026! 🤓 This is a great opportunity for grad students & postdocs in infectious disease modeling to gain experience organizing events & connect with peers. Applications are due by 9am ET on 1/1/2026, link in flyer & alt text. 125
Reposted by Casey Middleton, PhDProf Peter Hotez MD PhD DSc(hon) @peterhotezmdphd.bsky.social · 05/12/2025 618674
Casey Middleton, PhD @caseymiddleton.bsky.social · 04/12/2025Interdisciplinary scientists’ notes apps be like: - VEdirect vs VEtotal - d/dx(a^x) = ln(x) a^x - grocery list - to read: doi.org/… - how to exit vim 010
Casey Middleton, PhD @caseymiddleton.bsky.social · 04/12/2025More than 75% of food crops depend on pollinating insects. What a striking cartoon to show the impact of dwindling insect populations 🐝 010
Casey Middleton, PhD @caseymiddleton.bsky.social · 03/12/2025When they ask you to bring your talk on a flash drive, and you’re a professional, so you use your Tweety Bird flash drive #Epidemics10 130
Reposted by Casey Middleton, PhDAlessandro Vespignani @alexvespi.bsky.social · 25/11/2025We’ve just released Epistorm-Mix, a new open dataset on how people in the U.S. mix across ages and settings in the post-COVID era. 📊 Contact-level data + contact matrices Built for epidemic modeling & forecasting Fully open data & code 🔗 www.epistorm.org/data/epistor...epistorm.orgEpistorm-Mix: Mapping Social Contact Patterns in the Post-Pandemic United StatesEpistorm-Mix provides individual-level contact data and contacts patterns characterization relevant for the spread of respiratory infectious diseases within the US population. 03119
Reposted by Casey Middleton, PhDCarl T. Bergstrom @carlbergstrom.com · 14/11/2025I've been on the road so I'm behind the times—but if you wanted to destroy US science, I can think of no more expedient action. Blatant unconstitutionality aside, fuck this backwards forwards and sideways. www.science.org/content/article/u-s-congress-considers-sweeping-ban-chinese-collaborations 15407126
Reposted by Casey Middleton, PhDThe Ferrari Lab @theferrarilab.bsky.social · 11/10/2025Every fall, for the last 13 years, I have worked with CDC and WHO colleagues on a report in MMWR to update the estimates of the global burden of measles disease and mortality. This year we were already planning to publish in WER because of restrictions on communication between WHO and CDC. 1268
Reposted by Casey Middleton, PhDYour Local Epidemiologist @ylepidemiologist.bsky.social · 09/10/20251/ Hey, do you need some #goodnews? I know I do. Between the noise and the chaos, it helps to stop and remember what progress actually looks like. Here are four public health wins to give you some good news for the week 👇 15323
Casey Middleton, PhD @caseymiddleton.bsky.social · 01/10/2025Why, in this incredible world of technological advancements, are published inline equations still blurry? 😵💫 140
Casey Middleton, PhD @caseymiddleton.bsky.social · 19/09/2025#Vaccines save babies! And they do it so well when we allocate resources to achieve high vaccination rates instead of meh vaccination rates 💉 000
Reposted by Casey Middleton, PhDYour Local Epidemiologist @ylepidemiologist.bsky.social · 18/09/20251/ Today and tomorrow, #ACIP —the external body that sets vaccine policy—is holding a special session. One item on the agenda is the highly anticipated vote for the Covid vaccine. We’re expecting VAERS data to be misused to suggest 25 pediatric deaths were caused by the vaccine. Here are the facts👇 811954
Casey Middleton, PhD @caseymiddleton.bsky.social · 17/09/2025I am pretty sure I had COVID-19 earlier this month, but I tested negative (by RDT) on days 1 & 3 of infection. How do you satisfy your academic curiosities about what pathogen has infected you without spending tons of $$ on diagnostic tests? 671
Casey Middleton, PhD @caseymiddleton.bsky.social · 01/08/2025I see news outlets reporting on falling ‘fertility rates,’ and I find this terminology non-intuitive… and potentially problematic. Falling fertility rates tell us about reductions in women’s birth rates, not reductions in women’s fertility! Let me explain: 111
Casey Middleton, PhD @caseymiddleton.bsky.social · 15/07/2025Reason #2,946 to keep funding science: color mix undoification 🤯 000
Reposted by Casey Middleton, PhDSarah Cobey @cobey.bsky.social · 23/06/2025Sang Woo (Daniel) Park and I are excited to share a new preprint, "Susceptible host dynamics explain pathogen resilience to perturbations" [1/8] www.biorxiv.org/content/10.1... 25421
Casey Middleton, PhD @caseymiddleton.bsky.social · 28/05/2025I don’t see enough people talking about how hard it is to search for this emoji 💁♀️ WHAT AM I SUPPOSED TO SEARCH FOR PLEASE TELL ME 130
Reposted by Casey Middleton, PhDNathan Lo @nathanlo.bsky.social · 24/04/2025🧵1/N New study published in @jama.com on re-emergence of vaccine-eliminated infectious diseases under declining vaccination in the US. We model long-term risk and conditions for return to endemicity for measles, rubella, polio, & diphtheria. Collab w/ @Mathewkiang.com jamanetwork.com/journals/jam... 13399209
Reposted by Casey Middleton, PhDAdam Kucharski @adamjkucharski.bsky.social · 10/04/2025Interesting new pre-print on test-negative designs and implications for estimating correlates of protection: www.medrxiv.org/content/10.1... 1205
Reposted by Casey Middleton, PhDMarc Lipsitch @mlipsitch.bsky.social · 09/04/2025New commentary on pandemic surveillance and the need to have it be repeatable/continuous for updating, out in @pnas.org with Freya Shearer of Uni Melbourne: www.pnas.org/doi/10.1073/...pnas.orgThe importance of playing the long game when it comes to pandemic surveillance | PNASThe importance of playing the long game when it comes to pandemic surveillance 03014