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Katherine Horton

@kchorton.bsky.social
550 followers 357 following 104 posts

Infectious disease epidemiologist | Assistant Professor in #TB modelling @lshtm-tbmod.bsky.social @lshtm.bsky.social | Mama to 👦👦👦🐶

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Reposted by Katherine Horton
TB Centre LSHTM @tb-lshtm.bsky.social · 18/09/2026
🌍 Working with @gavi.org, @lshtm.bsky.social researchers led by @drjohnellis.bsky.social modelled the potential impact of new TB vaccines across 73 LMICs. 💉 vaccines delivered between 2030 and 2050 could avert up to 61 million TB cases and 7 million deaths by 2100. Read more 👉 bit.ly/4rkkTax
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Reposted by Katherine Horton
LSHTM TB Modelling Group @lshtm-tbmod.bsky.social · 14/09/2026
New paper from @plosglobalpublichealth.org: which TB screening strategies are the best value as funding shrinks? Modelling clinic/community approaches in 🇿🇦, we found combining strategies reaching risk groups is more cost-effective than any one approach alone doi.org/10.1371/journal.pgph.0006738
doi.org
Projected population level impact and cost-effectiveness of clinic and community-based tuberculosis screening approaches
The South African National Department of Health have set ambitious targets to scale up TB testing, focusing primarily on clinic attendees. In the context of declining funding for TB care and preventio...
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Reposted by Katherine Horton
Jack Stanley @jack-stan.bsky.social · 04/09/2026
Published yesterday: 🩺 Data from 12 studies on ~16,000 people diagnosed w/ TB in Zimbabwe 📈 Age at TB diagnosis in Zimbabwe increased by half a year with each passing calendar year 2000-2024 🥼 We need to think of older adults more when considering surveillance, diagnosis and management of TB
thelancet.com
Temporal changes in age at diagnosis with tuberculosis in high-HIV prevalence settings: a pooled multi-cohort analysis from Zimbabwe
Age at TB diagnosis in Zimbabwe increased between 2000 and 2024. TB programmes must adapt case-finding, clinical services and management for older adults considering multimorbidity, polypharmacy and f...
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Reposted by Katherine Horton
CMMID @cmmid-lshtm.bsky.social · 24/07/2026
⚕️ New research with @lshtm-tbmod.bsky.social shows how the most effective public health interventions against #TB would be population-wide ones, like mass vaccination programmes and screenings Read the @lshtm.bsky.social story 🔽 www.lshtm.ac.uk/research/cen...
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TB Proof @tbproof.bsky.social · 27/07/2026
⚽️ Only 1 day to go until our Men’s Health Soccer Event! Join us tomorrow for soccer, learn the facts about TB, and discover why early testing matters. Together we can reduce stigma, protect our health, and build stronger communities. 💙 #MensHealth #EndTB
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Reposted by Katherine Horton
Peter MacPherson @petermacp.bsky.social · 24/07/2026
New publication led by Mphatso Phiri: Drivers of sex differences in Mycobacterium tuberculosis immunoreactivity among adolescents and adults in Blantyre, Malawi link.springer.com/article/10.1... @uofgshw.bsky.social @lightontb.bsky.social @kchorton.bsky.social #TB #Episky 🛟🧪
link.springer.com
Drivers of sex differences in Mycobacterium tuberculosis immunoreactivity among adolescents and adults in Blantyre, Malawi - BMC Global and Public Health
Background Sex differences in Mycobacterium tuberculosis (Mtb) exposure likely contribute to sex differences in tuberculosis (TB) burden. However, population-level age- and sex-specific patterns of Mt...
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Katherine Horton @kchorton.bsky.social · 24/07/2026
Really great to see this messaging and action by @tbproof.bsky.social to raise awareness and reach men affected by #TB! ⚽️
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Katherine Horton @kchorton.bsky.social · 21/07/2026
Our new paper in @nathealth.nature.com shows that population-level #TB interventions are likely to have more meaningful impact on disease burden than interventions that only reach routinely diagnosed individuals or their households. www.nature.com/articles/s44... 1/7
nature.com
Global impact and cost-effectiveness of tuberculosis interventions - Nature Health
A modelling analysis at a global scale estimates that three interventions (vaccination, community-wide screening and prison screening programmes) could prevent more than 10% of tuberculosis cases betw...
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Reposted by Katherine Horton
Michael Marks @drmichaelmarks.bsky.social · 18/07/2026
Academic clinical jobs @lshtm.bsky.social for people in UK clinical training Clinical Lecturers 1) Infectious Diseases (ST3-6) tinyurl.com/4vbjwrkr 2) Paediatrics (ST4-7) tinyurl.com/2hajhbs3 3) Public Health (ST3-5) tinyurl.com/yzd5cmxa Clinical Fellow in Primary Care (ST1) tinyurl.com/mpsmk7zk
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Reposted by Katherine Horton
The LIGHT Consortium @lightontb.bsky.social · 17/07/2026
Men continue to experience more than twice the prevalence of TB than women across LMICs. This LIGHT Consortium-supported systematic review and meta-analysis adds to the evidence for gender-responsive TB prevention, diagnosis, and care. 📖 journals.plos.org/plosmedicine... #TB #EndTB #GlobalHealth
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Reposted by Katherine Horton
The LIGHT Consortium @lightontb.bsky.social · 10/07/2026
Who is most likely to miss out on TB diagnosis and treatment? This LIGHT impact case study shows how better data uncovered important differences between men, women & young people helping shape fairer TB policies, strengthen national reporting & improve care. Read: light.lstmed.ac.uk/resources/li...
light.lstmed.ac.uk
Data-driven Insights Into Sex and Gender Disparities in Tuberculosis: Insights From The LIGHT Research Programme
This case study highlights how LIGHT addressed these challenges through gender-responsive and equity-focused research across Kenya, Malawi, Nigeria and Uganda. LIGHT combined primary and secondary
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Reposted by Katherine Horton
LSHTM TB Modelling Group @lshtm-tbmod.bsky.social · 23/06/2026
New preprint suggests that combining clinic and community-based approaches is key to maximising the cost-effectiveness of #tuberculosis active case finding in South Africa 🇿🇦 Read more 👉 www.medrxiv.org/content/10.6...
medrxiv.org
Projected population level impact and cost-effectiveness of clinic and community-based tuberculosis screening approaches
The South Africa National Department of Health have set ambitious targets to scale up TB testing, focusing primarily on clinic attendees. In the context of declining funding for TB care and prevention...
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Reposted by Katherine Horton
Rebecca Clark @raclark18.bsky.social · 15/06/2026
New publication now out in @lancetgh.bsky.social! New #TB #vaccines are being trialled in older adolescents and adults, and we comment on the advantages and challenges of including younger adolescents who have historically been excluded. www.thelancet.com/journals/lan...
thelancet.com
Inclusion of young adolescents in policy development for new tuberculosis vaccines
The infant tuberculosis vaccine, BCG, prevents severe tuberculosis disease, but protection is rarely durable beyond childhood. New tuberculosis vaccines are being developed for the prevention of infec...
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Reposted by Katherine Horton
Lara Goscé @laragosce.bsky.social · 13/06/2026
Poverty is a major driver of TB.Conditional cash transfers combined with counselling improve pre-treatment loss to follow-up.In this economic analysis our modelling projections show that this intervention is cost-effective and can reduce incidence and mortality. www.sciencedirect.com/science/arti...
sciencedirect.com
Cost-effectiveness of conditional cash transfers with pre- and post-test tuberculosis counselling in South Africa: a modelling analysis
Tuberculosis (TB) disproportionately affects low-income populations due to socioeconomic barriers. Conditional cash transfers (CCTs) are promising str…
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Reposted by Katherine Horton
Peter MacPherson @petermacp.bsky.social · 09/06/2026
New: Risk & cause of death among people living with #HIV admitted to hospital Overall mortality remains unacceptably high (16%) & probably hasn’t changed since 2000 AIDS-related conditions (72%) esp. #TB (27%) main cause of death dx.doi.org/10.1002/jia2... @uofgshw.bsky.social #IDSky #TBSky 🧪🛟
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Reposted by Katherine Horton
The LIGHT Consortium @lightontb.bsky.social · 03/06/2026
New evidence is shaping TB policy and care in Uganda 🇺🇬 Through LIGHT, researchers at Gombe and Mityana Hospitals tested gender-responsive TB screening to improve diagnosis and care for men. 📄 Read the evidence brief: mli.mak.ac.ug/light-eviden... 🎥 Watch the Uganda video: youtu.be/BuM0MVoQnoQ?...
youtu.be
Transforming TB Care in Uganda: LIGHT Consortium & Makerere University Lung Institute Impact Story
YouTube video by LIGHT Consortium
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Katherine Horton @kchorton.bsky.social · 25/05/2026
It's been 10 years since we published our first review of sex differences in #TB prevalence. In this update, we found men remain twice as likely as women to have TB, and disparities have likely widened over time. journals.plos.org/plosmedicine...
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Reposted by Katherine Horton
Finn McQuaid @cfmcquaid.bsky.social · 12/05/2026
So...what would happen to the global TB epidemic if we "eliminated" undernutrition? Our paper out now @lancetgh.bsky.social, where we combined estimates from our review (doi.org/10.1093/ije/...) with population-specific BMI distributions to find out...(www.sciencedirect.com/science/arti...)
sciencedirect.com
Global, regional, and national estimates of tuberculosis incidence averted by eliminating undernutrition in adults: a modelling study
Current efforts to reduce global tuberculosis incidence have proved insufficient, highlighting that urgent action is needed to address underlying modi…
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Reposted by Katherine Horton
Finn McQuaid @cfmcquaid.bsky.social · 27/04/2026
Out now! Our preprint reviewing effects of extreme weather events on TB. papers.ssrn.com/sol3/papers.... @mjsaunder.bsky.social with Lauren Linde & Leo Martinez @bostonu.bsky.social & many others @tb-lshtm.bsky.social @lshtm-tbmod.bsky.social @lshtm-planet.bsky.social
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Reposted by Katherine Horton
Nick Davies @ngdavies.bsky.social · 15/04/2026
Budding infectious disease modellers: We're running our intermediate-level infectious disease modelling short courses at the London School of Hygiene and Tropical Medicine. Each course is 4 days, and we're running them over the first two weeks of September.
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Katherine Horton @kchorton.bsky.social · 09/04/2026
In our latest paper in @plosmedicine.org, we explore trade-offs in diagnostic algorithm, coverage, and duration of community screening for #TB, highlighting the importance of symptom-agnostic approaches and the need for strategies to sustain impact when screening ends. plos.io/4tuD2SM
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Reposted by Katherine Horton
PLOS Medicine @plosmedicine.org · 08/04/2026
In this systematic review & meta-analysis, Mortazavi & colleagues (@petermacp.bsky.social) investigate urban vs rural differences in #TB prevalence between 2000 and 2024 in 26 low- and middle-income countries, finding that TB epidemics have become increasingly urbanized 🧪 #MedSky plos.io/3O79BqY
plos.io
Urban and rural prevalence of tuberculosis in low- and middle-income countries: A systematic review and meta-analysis
In a systematic review and meta-analysis, Seyed Alireza Mortazavi and colleagues investigate urban versus rural differences in adult pulmonary tuberculosis prevalence between 2000 and 2024 in 26 low- ...
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Katherine Horton @kchorton.bsky.social · 07/04/2026
Great to see this work led by @alexandra-richards.bsky.social with @lightontb.bsky.social in @commsmed.nature.com. Further evidence that addressing gender disparities in TB burden and care are necessary for both an equitable response *and* an effective response. ⬇️
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Reposted by Katherine Horton
The LIGHT Consortium @lightontb.bsky.social · 03/03/2026
Join us for the closing webinar of the LIGHT research programme exploring gender-responsive approaches to TB care. 📅 31 March 2026 |⏰ 12:00–13:30 BST Hear key findings from 6 years of global research, community-led insights, and what’s next for scaling impact. 👉 Register: shorturl.at/QVLDX
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Katherine Horton @kchorton.bsky.social · 17/03/2026
Our analysis of #TB exposure and transmission patterns is now in @pnas.org. @petedodd24.bsky.social and I found a majority of TB transmission globally is attributable to contact with adult men, while contributions to transmission by age are more variable across regions. www.pnas.org/doi/10.1073/...
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Reposted by Katherine Horton
CMMID @cmmid-lshtm.bsky.social · 11/03/2026
🗞️ Recent study with @lshtm-tbmod.bsky.social modelled the potential impact of funding cuts to TB #PublicHealth initiatives from international donors Already implemented USAID cuts could cost $7.5 billion (USD) for healthcare systems & people living with TB Read 🔽 www.lshtm.ac.uk/research/cen...
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Reposted by Katherine Horton
UCL-TB @ucltb.bsky.social · 09/03/2026
World TB Day Symposium 2026: 2 weeks to go Join us in London or online on 24 March for the annual UCL/LSHTM symposium Topics include: • Beyond the lungs • Global trends & health systems • The potential for AI Details and registration: www.ucl.ac.uk/tb/events/wo... @tb-lshtm.bsky.social
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Katherine Horton @kchorton.bsky.social · 08/03/2026
New paper in @plosmedicine.org led by @aportnoy.bsky.social builds on our analysis of the potential epidemiological impacts of reductions in donor funding for #TB to show the economic burden on affected individuals and their households.
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Reposted by Katherine Horton
PLOS Medicine @plosmedicine.org · 24/02/2026
In this modeling study, Allison Portnoy and colleagues investigate the potential impact of reduced international donor funding on the household economic burden of tuberculosis in low- and middle-income countries 🧪 #MedSky #TB plos.io/4ryyBFX
plos.io
The potential impact of reduced international donor funding on the household economic burden of tuberculosis in low- and middle-income countries: A modeling study
In a modelling study, Allison Portnoy and colleagues investigate the potential impact of reduced international donor funding on the household economic burden of Tuberculosis in low- and middle-income ...
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Reposted by Katherine Horton
Rebecca Clark @raclark18.bsky.social · 24/02/2026
Our recent modelling study found that the estimated impact of new TB vaccines depends on the efficacy to prevent infectious asymptomatic TB. Read more in our paper out now in @plosmedicine.org! journals.plos.org/plosmedicine...
journals.plos.org
Estimating the population impact of new tuberculosis vaccines depending on efficacy against infectious asymptomatic tuberculosis: A modelling study
Hira Tanvir and colleagues estimate the potential impact of new tuberculosis vaccines under three scenarios of efficacy and conclude that to achieve the greatest impact, vaccines must prevent asymptom...
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Katherine Horton @kchorton.bsky.social · 13/02/2026
Really excited to share that this work from @aschwalbc.bsky.social estimating the burden of viable Mtb infection is now published in @plosmedicine.org!
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Reposted by Katherine Horton
LSHTM TB Modelling Group @lshtm-tbmod.bsky.social · 04/02/2026
Our new paper on strategies for implementing a potential new #TB #vaccine in South Africa is now published in @plosglobalpublichealth.org! doi.org/10.1371/jour...
doi.org
Insights on the implementation strategies for a potential new tuberculosis vaccine in South Africa
Several tuberculosis (TB) vaccines intended for adults and adolescents are in late-stage clinical trials, but there is limited research into how a new TB vaccine would be introduced. South Africa is a...
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Reposted by Katherine Horton
IDDjobs @iddjobs.org · 02/01/2026
PhD position (London, UK) Real-time modelling of infectious disease outbreaks. with @sbfnk.bsky.social @anne-cori.bsky.social @seabbs.bsky.social at @epiforecasts.io @cmmid-lshtm.bsky.social More details: iddjobs.org/jobs/2440
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Reposted by Katherine Horton
Richard White @richardwhite321.bsky.social · 24/11/2025
Another successful "Intro to TB Modelling" course in Copenhagen at #WLHC2025. Over 70 joined to learn about TB modelling! Followed by the now-traditional TB Modelling and Analysis Consortium social, which was also very well-attended and a lot of fun.
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Katherine Horton @kchorton.bsky.social · 20/11/2025
All are welcome to join the Gender Equity in TB Working Group today at 12:30 in Room B4B @theunion.org! We'll share updates on working group activities and host a panel discussion on progress to date and ways forward to ensure an equitable and inclusive #TB response.
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The LIGHT Consortium @lightontb.bsky.social · 16/11/2025
Day 1: the LIGHT Annual Consortium meeting kicks off this morning at the Crown Plaza in Copenhagen. Consortium partners from Nigeria, Malawi, Kenya, Uganda and the UK meet to discuss the key research findings, research uptake and impact so far.
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Peter MacPherson @petermacp.bsky.social · 15/11/2025
🚨Fully-funded PhD opportunity!🚨 Interested in researching how to improve risk prediction for people with #tuberculosis #TB and #multimorbidity? Joint project between @uofgshw.bsky.social 🏴󠁧󠁢󠁳󠁣󠁴󠁿 and @ki.se 🇸🇪, funded by UK MRC. Details here⬇️ www.gla.ac.uk/postgraduate...
gla.ac.uk
University of Glasgow - Postgraduate study - Centres for Doctoral Training - MRC DTP in Precision Medicine - Supervisors and Projects - Projects 2026 - Projects 26 - Peter MacPherson
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Katherine Horton @kchorton.bsky.social · 11/11/2025
Interested in #TB, equity, and modelling? @reinhouben.bsky.social and I are advertising an MRC LID studentship on heterogeneity in the coverage of community screening for TB @lshtm-tbmod.bsky.social @lshtm.bsky.social. For more details, visit mrc-lid.lshtm.ac.uk/2026-27-proj...
mrc-lid.lshtm.ac.uk
2026-27 Project (Horton & Houben) - MRC London Intercollegiate Doctoral Training Partnership Studentships
Epidemiological impact of heterogeneity in community screening for tuberculosis SUPERVISORY TEAM Supervisor Dr Katherine Horton...
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Katherine Horton @kchorton.bsky.social · 10/11/2025
Many thanks to @theunion.org and @the-independent.com for highlighting our work estimating the impact of reductions in global health funding on #TB morbidity and mortality @lshtm-tbmod.bsky.social @tb-lshtm.bsky.social
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Gwen Knight @gmknght.bsky.social · 05/11/2025
How will population shifts affect the future burden of #AMR? 👶👩‍🦳 🧫 We use a new modelling framework to explore future projections of #AMR by age and by sex, as well as interventions for control, building on our earlier findings that AMR isn’t uniform across demographics. doi.org/10.1371/jour...
doi.org
Combining demographic shifts with age-based resistance prevalence to estimate future antimicrobial resistance burden in Europe and implications for targets: A modelling study
Author summary Why was this study done? Infections caused by bacteria that are resistant to antibiotics are a major and growing threat to public health. Older adults and men are at higher risk of...
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Reposted by Katherine Horton
chaelinkim.bsky.social @chaelinkim.bsky.social · 20/10/2025
When fluoroquinolone resistance status is unknown, empirical use of BPaLM (adding moxifloxacin to BPaL) is cost-effective as a replacement for BPaL even with high fluoroquinolone resistance levels! 🦠💊 doi.org/10.1371/jour...
doi.org
Impact of fluoroquinolone resistance on the cost-effectiveness of empiric treatment for multidrug- or rifampicin-resistant tuberculosis
The WHO recommends the bedaquiline, pretomanid, and linezolid (BPaL) regimen with the additional fluoroquinolone antibiotic moxifloxacin (BPaLM) for initial treatment of multidrug- or rifampicin-resis...
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Reposted by Katherine Horton
Finn McQuaid @cfmcquaid.bsky.social · 31/10/2025
Our framework that informed the @who.int TB & climate change policy brief out now in @lancetrespirmed.bsky.social, exploring the intersections and implications of climate change for the TB epidemic. Key message? TB should be considered a climate-sensitive disease www.thelancet.com/journals/lan...
thelancet.com
Climate change and tuberculosis: an analytical framework
Climate change is likely to exacerbate a range of determinants that drive tuberculosis, the world's leading cause of death from a single infectious agent. However, tuberculosis is often neglected in w...
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Katherine Horton @kchorton.bsky.social · 30/10/2025
It was a real pleasure to deliver this Introduction to TB Modelling workshop for representatives from Kenya’s National TB, Leprosy and Lung Disease Programme last week with great discussions about how modelling can be used in policy and programme decisions.
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Katherine Horton @kchorton.bsky.social · 12/10/2025
Understanding patterns of #TB exposure and transmission is needed for targeted prevention strategies. In our latest pre-print, @petedodd24.bsky.social and I estimated the proportion of TB exposure to and transmission from sex and age groups for 177 countries. bit.ly/4nbV492
medrxiv.org
A global analysis of patterns of tuberculosis exposure and transmission
Tuberculosis (TB) is a major public health concern and the leading infectious cause of mortality globally. The disease exhibits strong prevalence patterns by age and sex, but the implications of these...
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Reposted by Katherine Horton
Rein Houben @reinhouben.bsky.social · 07/10/2025
In a new preprint (NOT PEER REVIEWED) we continue to explore the challenge of overtreatment in community screening. It seems the benefits of TB treatment far outweigh the harms, especially once we accept that sputum culture is not perfect. Important food for thought. www.medrxiv.org/content/10.1...
medrxiv.org
Do no harm - re-evaluating the risks of overtreatment in community-wide tuberculosis screening
Background Community-wide screening is a crucial strategy to end tuberculosis (TB), but a common concern is potential harm from overtreatment following false positive diagnoses. However, current refer...
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Reposted by Katherine Horton
Ruth Bowness @ruthbowness.bsky.social · 27/09/2025
PhD opportunity: New approaches to modelling TB transmission in low-incidence settings. Supervised by Ellen Brooks-Pollock (Bristol), me (Bath) & Rajeka Lazarus (Bristol) Apply: www.findaphd.com/phds/project... Deadline 20 Oct #PhD #Tuberculosis #Epidemiology #InfectiousDisease
findaphd.com
New approaches for modelling tuberculosis transmission in low incidence settings at University of Bristol on FindAPhD.com
PhD Project - New approaches for modelling tuberculosis transmission in low incidence settings at University of Bristol, listed on FindAPhD.com
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Katherine Horton @kchorton.bsky.social · 22/09/2025
Our systematic review of rural/urban differences in #TB prevalence shows evidence of rapidly urbanising epidemics in many settings, with differences across countries and regions. Link to preprint below ⬇️
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Madhu Pai, MD, PhD @madhupai.bsky.social · 15/09/2025
Sad (but not surprised) to read the latest Global Health 50/50 report, amidst turmoil in global health, erosion of democracy, withdrawal from multi-lateralism, aid cuts, attacks on science, DEI, human rights @kentbuse.bsky.social @jocalynclark.bsky.social global5050.org/2025-report/
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Peter MacPherson @petermacp.bsky.social · 16/09/2025
Men are more than twice as likely as women to have prevalent #TB. We did updated meta-analysis including over 4million people in 99 surveys. Despite increasing focus on gender equitable TB responses, this gap has widened since we last assessed these data over a decade ago.
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Katherine Horton @kchorton.bsky.social · 16/09/2025
1/ It’s been 10 years (😮) since we reported that #TB prevalence was twice as high in men as in women. 📢 Our new preprint explores how sex differences have shifted with more recent national prevalence surveys and growing attention to #gender responsive TB prevention and care. bit.ly/4gqP1LH
bit.ly
Differences in Tuberculosis Prevalence by Sex Over 1993-2024: A Systematic Review and Meta-Analysis
Background: Tuberculosis (TB) prevalence is higher among men than women in low- and middle-income countries (LMICs). However, summary measures of sex difference
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