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The John Snow Society

@johnsnowsociety.bsky.social
179 followers 80 following 121 posts

The John Snow Society aims to promote the life and works of Dr John Snow, a pioneer of the epidemiological method and celebrated anaesthetist. johnsnowsociety.org

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The John Snow Society @johnsnowsociety.bsky.social · 21h
Here is our 2026 Pumphandle Lecture poster designed by our very own Prof Paul Fine! Can you put it up in your own institutions and locations? The most unusual or bold displays you re-post will be displayed at the lecture 🖼️ Get your copy here: johnsnowsociety.org/files/2026/1...
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Jan Marc Morawe @janmarcmorawe.bsky.social · 10/09/2026
"Children from socioeconomically disadvantaged families often have lower developmental outcomes than their socioeconomically more advantaged peers." link.springer.com/article/10.1...
link.springer.com
Can parent–child interactions help reduce socioeconomic differences in language development? Results of a German birth cohort study - Journal of Public Health
Aim Children from socioeconomically disadvantaged families often have lower developmental outcomes than their socioeconomically more advantaged peers. In early childhood, language development (LD) in ...
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The John Snow Society @johnsnowsociety.bsky.social · 09/09/2026
Counting the days til the Society's annual Pumphandle Lecture! We're delighted to welcome Dr Hamid Jafari, on the fight to end polio. 📆 Tuesday 17th November ⌚️ 17:30 GMT 📍 John Snow Lecture Theatre, LSHTM London Will you join us? www.lshtm.ac.uk/newsevents/e...
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Michael Friendly @datavisfriendly.bsky.social · 07/09/2026
#TodayinHistory #dataviz #OTD 📊 💀Sep 06, 1925 Georg von Mayr died in Tutzing, Germany 🇩🇪 1874: Introduced bivariate color maps (joint dist/n of horses & cattle) 1877: First use of proportional, divided square in the modern (mosaic) form for data representation
The first moaic display called a flat diagram with two spittings, by von Mayr, 1877.  It shows a total number of 1000 split first into three columns of with proportional to the first variable (600, 300, 100). The columns are then split according to a second variable.
Portrait of Georg von Mayr
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The John Snow Society @johnsnowsociety.bsky.social · 20/08/2026
Researchers used difference in difference estimators to show the introduction of the worlds largest clean air zone in central London (ULEZ) was associated with improved lung growth in children. Published in @thelancetph.bsky.social www.qmul.ac.uk/news/latest-...
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The John Snow Society @johnsnowsociety.bsky.social · 17/08/2026
Researchers compared the representativeness of cohort study results to the target population using whole population data (not always available). Lots of rich insights here, including that exposure-outcome assocs can still be valid even if the sample and pop differ. academic.oup.com/ije/article/...
academic.oup.com
To whom do our observational studies apply? Representativeness and selection bias in cohort studies
Prospective cohort studies are a mainstay of epidemiological evidence. However, the study samples they assemble rarely mirror the populations to which thei
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The John Snow Society @johnsnowsociety.bsky.social · 14/08/2026
Headline: JSS Member and Journalist Colin Murphy with @ucddublin.bsky.social Has Turned Dr Snows Story into Art 🧑‍🎨 -In a new play "Miasma"! Written during covid, it's been performed at royal colleges, a prison, AND the Irish parliament. Find out more: johnsnowsociety.org/2026/08/07/t...
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The John Snow Society @johnsnowsociety.bsky.social · 12/08/2026
It's here! You can now read our annual society newsletter "The Broadsheet" 🗞️ packed with news on our annual lecture, chapters, social media, and special reports - all linked to #epidemiology and Dr Snow. Get it here: johnsnowsociety.org/2026/08/07/t...
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The John Snow Society @johnsnowsociety.bsky.social · 07/08/2026
We're excited to announce the John Snow Society 34th Pumphandle Lecture on Tuesday the 17th of November at the @lshtm.bsky.social We'll welcome Dr Hamid Jafari, a major leader in the Global Polio Eradication Initiative. "From Outbreaks to Endgame, The Fight to End Polio” More details to follow!
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The John Snow Society @johnsnowsociety.bsky.social · 23/07/2026
For no reason other than a few people have found this site invaluable and highlighted it to us, here is a great site for working with quasi-experimental designs (example - event study): lost-stats.github.io/Model_Estima...
lost-stats.github.io
Difference in Differences Event Study
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Alice Roberts @profaliceroberts.bsky.social · 09/07/2026
An important paper about protecting science from political interference. Europe needs to defend its science against the kind of attacks unfurling in the US. By Martin McKee, Christina Pagel & Tiago Correia in the European Journal of Public Health: academic.oup.com/eurpub/artic...
academic.oup.com
Europe must learn from America’s assault on science
In June 2026, several prominent diabetes researchers, including Steven Kahn, editor-in-chief of Diabetes Care, were removed by police from the annual meeti
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The John Snow Society @johnsnowsociety.bsky.social · 19/06/2026
Ecological study uses Bradford Hill criteria and evidence from RCTs to make causal claim of impact of HPV vaccination on cervical cancer mortality risk: www.thelancet.com/journals/lan...
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The John Snow Society @johnsnowsociety.bsky.social · 16/06/2026
John Snow MD died #onthisday in 1858, whilst finalising his monograph 'On Chloroform'. We recommend: johnsnow.matrix.msu.edu/work.php/id=... A fantastic biography by Snow's contemporary Benjamin Richardson - scroll for detail of Snow's final days (excerpt below). Thank you Peter Vinten-Johansen!
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The John Snow Society @johnsnowsociety.bsky.social · 15/06/2026
Thirty years on, research linking viral infections with Alzheimer’s is finally getting the attention it deserves
theconversation.com
Thirty years on, our research linking viral infections with Alzheimer’s is finally getting the attention it deserves
It has taken decades for our theory that Alzheimer’s is triggered by viral infections to be taken seriously.
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The John Snow Society @johnsnowsociety.bsky.social · 12/06/2026
Large language models (LLMs) can replicate human emotions like fear, sadness and anxiety, and be 'calmed down’ by a breathing exercise: published in @thelancet.com Digital Health Implications for future mental health research (human participants optional) www.thelancet.com/journals/lan...
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The John Snow Society @johnsnowsociety.bsky.social · 19/05/2026
Writing is thinking OR Thinking is not only writing 🤔 The debate on the value of LLMs in scientific paper writing continues... www.nature.com/articles/s44... www.nature.com/articles/s44...
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London School of Hygiene & Tropical Medicine @lshtm.bsky.social · 18/05/2026
RAPID REACTION: LSHTM expert responds to WHO declaring outbreak of #Ebola in DRC & Uganda a public health emergency of international concern Daniela Manno discusses what's behind the outbreak, symptoms, and wider #PublicHealth risk More 👉 www.lshtm.ac.uk/newsevents/n...
Illustration of Ebola virus showing long thin curving light blue filament with two loops and wing-like structure on lefthand side and righthand end curving upwards against dark blue background.
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The John Snow Society @johnsnowsociety.bsky.social · 12/05/2026
Celebrating Florence Nightingale's bicentenary #throwbacktuesday pmc.ncbi.nlm.nih.gov/articles/PMC...
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The John Snow Society @johnsnowsociety.bsky.social · 09/05/2026
"Passengers will be ferried ashore....far from residential areas, in sealed, guarded vehicles, through a completely cordoned-off corridor, and repatriated directly to their home countries" Epidemiology in practice and the importance of community buy-in. #Hantavirüs @who.int
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The John Snow Society @johnsnowsociety.bsky.social · 19/03/2026
The hidden cost of conflict: Resurgence of falciparum malaria and new vector species in #Yemen #MapOfTheDay and editorial in JEGH link.springer.com/article/10.1... S Ebrahim and others
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The John Snow Society @johnsnowsociety.bsky.social · 18/03/2026
Looks like Dr John Snow has been posthumously elevated to fellowship(?) of the Chartered Institute of Environmental Health Professionals - sounds good to us! - read his 'interview' here:
cieh.org
Dr John Snow - CIEH
John Snow was a famous English physician considered to be one of the founders of public health.
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The John Snow Society @johnsnowsociety.bsky.social · 17/03/2026
Thanks to @datavisfriendly.bsky.social for highlighting some fantastic reproductions of Dr John Snow's iconic map of cholera spread (+ our own tongue in cheek homage to maps/arcade gaming), all submitted to our 2023 #map #competition. Check out the winners here: johnsnowsociety.org/2023/10/20/w...
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Michael Friendly @datavisfriendly.bsky.social · 17/03/2026
#datavis @anychart.com, on their Data Viz Weekly caught my eye with this lovely depiction of Gender views in Europe by Teresa Talò The pattern is so clear, color scale nicely muted. I wondered what spatial analysis could do here to show something of an overlaid visual summary. Arrows? contours?
Chart showing attitudes toward gender roles across Europe in a choropleth map. It colors each country on a scale from more egalitarian (green) to more traditional (red) based on responses to statements about work, family, and the roles of men and women
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The John Snow Society @johnsnowsociety.bsky.social · 16/03/2026
New paper out in @thelancet.com: The Human Consequences of Epic Fury. "The health crisis in Iran and across the Middle East is “escalating rapidly"”
thelancet.com
Offline: The human consequences of Epic Fury
The health crisis in Iran and across the Middle East is “escalating rapidly”, reported Hanan Balkhy, WHO's Regional Director for the Eastern Mediterranean. She was speaking at a WHO press conference…
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The John Snow Society @johnsnowsociety.bsky.social · 15/03/2026
We're continuing to celebrate Dr John Snow's birthday! Can you do better than other members of the public in the CIEH John Snow quiz? 🧐🎓⤵️ www.youtube.com/watch?v=X6sD... #HappyBirthdayDrSnow
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The John Snow Society @johnsnowsociety.bsky.social · 15/03/2026
🎁 Sterling silver 'pumphandle' earrings to commemorate John Snow's meticulous research on cholera spread via a contaminated water system in Soho, London in 1854. Available to society members 👇 johnsnowsociety.org/join-us/#Memo #HappyBirthdayDrSnow
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The John Snow Society @johnsnowsociety.bsky.social · 15/03/2026
Today we're celebrating the Birthday of (the man, the myth, etc) Dr John Snow MD! This year's artwork is more than (just) stream of consciousness musings of a godchild of the social media team - each has real significance; our move to bluesky, birthday hat... and prizes for guesses re the others.
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Harvard Epidemiology @harvardepi.bsky.social · 13/03/2026
Happy (early) Birthday to the father of Field Epidemiology! John Snow, who turns 213 on March 15th, is legendary for using disease mapping to determine the source of the London cholera outbreak in 1854. #JohnSnow #Epidemiology
Happy Birthday John Snow!! March 15, 1813
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The John Snow Society @johnsnowsociety.bsky.social · 12/03/2026
"Armed conflict represents one of the most direct and destructive assaults on public health systems" New paper in the International Journal of Infectious Diseases discusses the unravelling of global health governance order. www.ijidonline.com/article/S120...
ijidonline.com
“Things Fall Apart”: The Unravelling of Global Health Governance and the Imperative for Action Preserving Infectious Disease Prevention and Control
In his 1958 novel Things Fall Apart, the Nigerian writer Chinua Achebe observes: “Age was respected among his people, but achievement was revered” [1]. Global health has likewise come to revere achiev...
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The John Snow Society @johnsnowsociety.bsky.social · 09/03/2026
Recommended read 📖: Library of Lost Maps by Prof James Cheshire is a personal journey through the UCL map library and some fantastic finds. If you love maps, you'll love this. 🖼️ One of first global health maps www.ucl.ac.uk/social-histo...
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The John Snow Society @johnsnowsociety.bsky.social · 04/03/2026
Prof Sir Nicholas White contributed significant advances to the treatment of #malaria, amongst other major achievements. @thetimes.com has an excellent obituary (paywall) www.thetimes.com/uk/obituarie...
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The John Snow Society @johnsnowsociety.bsky.social · 03/03/2026
We missed this post entirely but very glad you were able to make the pilgrimage @drjenndowd.bsky.social ! Next time feel free to email us via the details in our website; sometimes we may be able to arrange a formal tour with a member of the Society steering committee 📍🗺️
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The John Snow Society @johnsnowsociety.bsky.social · 03/03/2026
Despite increasing use of observational data in public health, researchers are still hesitant to use strong causal language (for fear of overpromising). New paper and comment in @bmj.com sets out new guidance on appropriate use/misuse of causal language www.bmj.com/content/392/...
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The John Snow Society @johnsnowsociety.bsky.social · 02/03/2026
Despite the 19th century discovery of the mode of transmission of cholera and the rapid evolution of its prevention and treatment, it still remains a problem today. More than 16,000 new cases recorded in early 2026, mostly in Africa. www.who.int/publications...
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The John Snow Society @johnsnowsociety.bsky.social · 26/02/2026
Thomas Wakley, the original editor of @thelancet.com was indeed no friend of Dr John Snow. In happier news, the journal published a 'corrected' obituary in 2013: www.thelancet.com/journals/lan... We're glad you had a refreshing visit to the John Snow pub @pwgtennant.bsky.social‬ 😊
thelancet.com
John Snow
Physician, epidemiologist, and anaesthetist. Born in York, UK, on March 15, 1813, he died in London on June 16, 1858, aged 45 years.
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The John Snow Society @johnsnowsociety.bsky.social · 17/02/2026
Exclusive by @nature.com: Key US infectious-diseases centre to drop pandemic preparation
nature.com
Exclusive: Key US infectious-diseases centre to drop pandemic preparation
Staff members have been instructed to scrub this topic and ‘biodefense’ from the agency’s website.
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The John Snow Society @johnsnowsociety.bsky.social · 16/02/2026
Graph of the Day📉: Relationship between coffee intake and incident dementia, in new @jama.com paper by team at @hsph.harvard.edu jamanetwork.com/journals/jam...
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The John Snow Society @johnsnowsociety.bsky.social · 11/02/2026
Today, on International Day of Women and Girls in Science 🔍 We'd like to draw your attention to the most recent research articles in the ongoing series of women in #epidemiology research - and still accepting articles!👇 www.frontiersin.org/research-top...
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The John Snow Society @johnsnowsociety.bsky.social · 10/02/2026
@bmj.com 📣 Call for papers on the geopolitics of global health 👇 www.bmj.com/content/392/...
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The John Snow Society @johnsnowsociety.bsky.social · 09/02/2026
"Some people considered me unsuccessful. I was demoted from my position, then 10 years ago I was terminated". #Nobel Laureate Katalin Kariko on the challenges of academia and the power of self-belief. #WomenInScience #Academia www.youtube.com/watch?feature=shared&v=u0CixIx1SUo @nobelprize.org
youtube.com
“I dreamt about doing research, not getting an award.” Meeting Nobel Prize laureate Katalin Karikó
YouTube video by Nobel Prize
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The John Snow Society @johnsnowsociety.bsky.social · 22/01/2026
Cholera is surging in Africa. A new generation of vaccines could slow it @telegraph.co.uk www.telegraph.co.uk/global-healt...
telegraph.co.uk
Cholera is surging in Africa. A new generation of vaccines could slow it
Experts say the three jabs have the potential to make protection faster, more accessible, and more equitable than ever
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The John Snow Society @johnsnowsociety.bsky.social · 19/01/2026
New @thelancet.com commission outlines the three major threats to global health in the post #covid era: 1. Non-communicable diseases, 2. Outbreaks of infectious diseases, and 3. Environmental degradation. spkl.io/6018AoZ5s
spkl.io
The Lancet Commission on improving population health post-COVID-19
An increasing number of national and international commitments have failed to reduce three intimately interconnected major global threats to population health: non-communicable diseases, outbreaks of ...
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The John Snow Society @johnsnowsociety.bsky.social · 26/12/2025
Wishing you a very 🎄Merry Christmas from the John Snow Society
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The John Snow Society @johnsnowsociety.bsky.social · 15/12/2025
#Aboutlastweek: Some pictures from a fantastic lecture and celebration for Professor Paul Fine, co-founder of the John Snow Society. 🎙️Paul's talk "Serendipity and Transmissibility" 📸An original polaroid (?!) of the 5 Society founders 🥳The celebration
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Michael Marks @drmichaelmarks.bsky.social · 09/12/2025
Incredible retirement talk by Prof. Paul Fine @lshtm.bsky.social Career dedicated to global health, critical enquiry & passion for training next generation in UK & esp Malawi where he left huge legacy. Privilege spend 10+yrs at same institution & humbling to know its not even 1/3 time hes been here.
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The John Snow Society @johnsnowsociety.bsky.social · 09/12/2025
A final reminder for today's event @LSHTM , celebrating Professor Paul Fine🎊, co-founder of the John Snow Society. 📅 9 December 2025 ⏲️ 17.30 📍LSHTM | John Snow Lecture Theatre 👇 www.lshtm.ac.uk/newsevents/e...
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The John Snow Society @johnsnowsociety.bsky.social · 02/12/2025
#OnThisDay is the 175th anniversary of the first full meeting of the London Epidemiological Society, one of the oldest known societies of its kind. Its creation was prompted by an urgent desire to understand and prevent disease epidemics. (and John Snow was a founding member)
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The John Snow Society @johnsnowsociety.bsky.social · 28/11/2025
Meta-analysis of students concludes handwritten note taking is superior to typing for studying and memory commitment - contributing to higher grades. link.springer.com/article/10.1...
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The John Snow Society @johnsnowsociety.bsky.social · 27/11/2025
When humans and AI work together to solve problems, sometimes outcomes are worse than AI or humans alone. Paper in @nathumbehav.nature.com "When combinations of humans and AI are useful: A systematic review and meta-analysis"👇🏽
nature.com
When combinations of humans and AI are useful: A systematic review and meta-analysis - Nature Human Behaviour
Vaccaro et al. present a systematic review and meta-analysis of the performance of human–AI combinations, finding that on average, human–AI combinations performed significantly worse than the best of…
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The John Snow Society @johnsnowsociety.bsky.social · 26/11/2025
Dr Klauss Garcia 🇧🇷 took part in a prestigious overseas PhD placement in the UK - and wanted a marker of his positive London experience. An erudite choice Klauss 👏🏽 #publichealth #epidemiology #sohomap
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