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Billy Quilty

@bquilty.bsky.social
1.3K followers 1.8K following 163 posts

Infectious disease epidemiologist and modeller based at Charité Universitätsmedizin Berlin, honourary LSHTM | PhD LSHTM | MSc Imperial College London | Twitter: @BQuilty

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Reposted by Billy Quilty
Sam Abbott @seabbs.bsky.social · 28/09/2026
A few years ago we (Kelly Charniga @sangwoopark.bsky.social et al.) did some thinking on how we should estimate and report epidemiological delay distributions (i.e incubation periods etc. etc.). journals.plos.org/ploscompbiol...
journals.plos.org
Best practices for estimating and reporting epidemiological delay distributions of infectious diseases
Epidemiological delays are key quantities that inform public health policy and clinical practice. They are used as inputs for mathematical and statistical models, which in turn can guide control strat...
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Now you're really showing your ignorance. Y2K wasn't a disaster precisely because $300 - $600 billion was spent preventing it. www.si.edu/spotlight/y2k
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Would advise you do some basic research before commenting next time, otherwise, good troll
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Billy Quilty @bquilty.bsky.social · 17/09/2026
You're the ignorant one here. I have several local LLMs ready to run on my laptop right now.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I meant "even 1 *person* to 8 billion people". But I think the classics: launch some nukes, create some viruses, attack infrastructure (Chernobyl everywhere)
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I'm not underestimating in the slightest, and I'm not claiming they're conscious either, just saying that there has clearly been a huge increase in capability that needs to be taken seriously.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
There you go, there's an entirely plausible scenario right there. I'm glad we agree!
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Local models are highly capable now. And yes, but a human can't work 24/7 towards a goal, trying every possible route, or duplicate itself, etc.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
And humans are "just" atoms. It's different to past malware in that it can try, fail, adapt, and try again, until it achieves a set goal.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Also you haven't responded to my point about sub agents. I think you'd benefit from going and trying these things out and learning a bit more about them
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Billy Quilty @bquilty.bsky.social · 17/09/2026
So you spend all day trying to defend against AI threats, and yet its not a threat? I don't quite get why you folks underestimate the try-fail-improve-try again loop (i.e. the whole definition of an agent).
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Sub agents can be created and hosted on different hardware to the orchestrator. They can be completely local now - I run local models like Qwen in my work in which inference is completely on my laptop chip. In that way a capable agent could set up a sophisticated botnet.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I'm an epidemiologist so I know this well. However like with infectious diseases, there are tail risks of low probability high severity events which we need to prepare for. I'm not saying it will kill all humans, but any AI-induced event with mortality between 1 and 8 billion is worth preparing for.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I wouldn't underestimate the capability of an botnet of less capable agents orchestrated by a more capable agent. It doesn't have to be superintelligent, its already orders of magnitude more intelligent than malware of the past. Your scenario is far too narrow and frankly pretty naive.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I'm talking about small sub agents.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
I would have thought the development of something which is able to make the working class obsolete would be something the left would take more seriously, but nope its all BS apparently. Real head in the sand behaviour which will come back to bite us, big time.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
bsky.app/profile/bqui...
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Yeah but I also think these things can be incredibly dangerous without being superintelligent
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Billy Quilty @bquilty.bsky.social · 17/09/2026
And hide*
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Billy Quilty @bquilty.bsky.social · 17/09/2026
A capable AI agent could reproduce itself and somewhere where you can't switch it off.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
There are already many rogue agents on the web - we've just previously called them computer viruses, or bots. A capable agent on OpenAI may not escape containment itself could rent server space, infect people's computers, etc., and create many more agents, then direct them to do nefarious things.
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Billy Quilty @bquilty.bsky.social · 17/09/2026
Regardless, it's good to see this stuff, perhaps indicative of a move towards papers being a dynamic interactive process rather than a static PDF. But also heralds the coming reproducibility crisis as hoards of agents attempt to run creaking GitHub code, finding plenty of bugs along the way...
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Billy Quilty @bquilty.bsky.social · 17/09/2026
A nice concept but seems a bit... obvious...? to be in Nature? Ah, it was first up on arxiv a year ago. Perhaps says a lot about how quickly things are progressing in the field that this seems less than revolutionary - like in COVID, journals will struggle to keep up arxiv.org/abs/2509.06917
arxiv.org
Paper2Agent: Reimagining Research Papers As Interactive and Reliable AI Agents
We introduce Paper2Agent, an automated framework that converts research papers into AI agents. Paper2Agent transforms research output from passive artifacts into active systems that can accelerate dow...
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Billy Quilty @bquilty.bsky.social · 10/09/2026
Yeah there's a whole load of very important software systems that could plausibly be breached by a sustained AI swarm at current capability, the worst being those governing nukes, nuclear power stations, the grid, etc. It doesn't even require superintelligence
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Billy Quilty @bquilty.bsky.social · 10/09/2026
Ooh that's grim, I really hope there's not a lot of people who think like that! In my mind the main group of people who are dismissive of risks are those who just view all this talk as unrealistic science fiction, which is an altogether different line of thought than the group you describe
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Billy Quilty @bquilty.bsky.social · 10/09/2026
💯
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Billy Quilty @bquilty.bsky.social · 10/09/2026
Basically this again but swap pandemic for AI bsky.app/profile/bqui...
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Billy Quilty @bquilty.bsky.social · 10/09/2026
Seeing a lot of pedantic hang-up on the phrasing of "AI could kill all humans". Yes full-on extinction is unlikely for a number of reasons, but there's a wide range of possibilities between 0 and 7 billion deaths that would still be very bad indeed
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Billy Quilty @bquilty.bsky.social · 27/08/2026
Stewart Lee's let himself go
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Reposted by Billy Quilty
Michael Marks @drmichaelmarks.bsky.social · 18/08/2026
Come & join our group. Modelling post @lshtm.bsky.social working on STI transmission & new interventions in the UK. Working closely with @ukhsa.bsky.social Applications close 17th September. @adamjkucharski.bsky.social @rozeggo.bsky.social @bquilty.bsky.social @grahammedley.bsky.social
jobs.lshtm.ac.uk
Job Opportunity at LSHTM: Research Fellow
The London School of Hygiene & Tropical Medicine (LSHTM) is one of the world’s leading public health universities. Our mission is to improve health and health equity in the UK and worldwide; working i...
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Billy Quilty @bquilty.bsky.social · 27/08/2026
What the photo doesn't quite show is that it takes up an entire wall, and has given the entire corridor a vaguely menacing energy. Sorry LSHTM!
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Billy Quilty @bquilty.bsky.social · 12/08/2026
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Billy Quilty @bquilty.bsky.social · 12/08/2026
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Billy Quilty @bquilty.bsky.social · 12/08/2026
Hopefully mine arrive in the post today!
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Billy Quilty @bquilty.bsky.social · 11/08/2026
Alas, a 15-year apprenticeship means I will miss this eclipse entirely, and the next isn't until 2081! Still, I suppose that gives me ample time to perfect the lenses, inherit the guild from my father-in-law, and monopolise the late 21st century celestial movement observation market.
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Billy Quilty @bquilty.bsky.social · 11/08/2026
Both the state and the free market have comprehensively failed on the availability of eclipse glasses. Where are they? It's not like we haven't known this was going to happen for hundreds - if not thousands - of years.
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Billy Quilty @bquilty.bsky.social · 08/08/2026
Why haven't we seen a sci-fi movie on AI called "Alignment" yet? Nolan, you can have that one for free.
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Reposted by Billy Quilty
LSHTM Vaccine Centre @lshtm-vaccines.bsky.social · 03/07/2026
💉 Vaccines against Pneumococcal disease are expensive to provide long-term where they're needed most. 🆕 long-term @lshtm.bsky.social research confirms that two-doses of PCVs are as effective as three, helping countries address the vaccine "funding gap" & continue to save lives. 👉 bit.ly/4v6CwLj
Billy Quilty: A reduced two-dose schedule sustains protection for children and their caregivers, ensuring the future financial sustainability of vital immunisation programmes.
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Billy Quilty @bquilty.bsky.social · 11/06/2026
I want to make a disclaimer that I am in no way justifying unsavoury views. That is just my read on the likely mechanism for the rise of Reform and Restore.
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Billy Quilty @bquilty.bsky.social · 11/06/2026
So while that net immigration is coming down, there has been a pretty big rise in non-EU immigration which is here to stay. And unfortunately it has to be said there is undeniably a racial dimension to why that has become so salient, as it is more visible than EU immigration.
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Billy Quilty @bquilty.bsky.social · 11/06/2026
Hmm I'd argue recently public opinion trends track cumulative net non-EU immigration - looking at overall annual net hides it. I updated this Economist figure (left) but using ONS data which has by-group immigration and emigration data (right). www.ons.gov.uk/file?uri=/pe...
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Reposted by Billy Quilty
Ian M. Mackay, PhD (he/him) 🦠🤧🧬📑🦟🧀 @mackayim.bsky.social · 18/05/2026
Some past published examples of incubation periods (IP) of hantavirus pulmonary syndrome (HPS) cases. Note that the extremes of 6+ weeks (42+ days) are the exception, not the rule.
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Reposted by Billy Quilty
Epiverse TRACE @epiverse-trace.bsky.social · 14/05/2026
1/5 🌍 Real-world outbreak analytics training, now open for July 2026 · 55 participants last cohort · 31 countries 🗓️ Tue & Wed AM/PM sessions 💰 50% off for LMIC applicants (deadline 6 Jun) ❓ Got questions? We're hosting a drop-in Q&A next Tuesday — details below 👇
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Billy Quilty @bquilty.bsky.social · 17/05/2026
So not definitive (but 95% CrI is 53-91%, so more than pure chance). Cases we see from now on are more likely to be due to transmission beyond that from index case. Given serial interval It'll be a while before we can say anything about transmission happening off the ship (tho depending on context)
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Reposted by Billy Quilty
Thomas House @tah-sci.com · 17/05/2026
When there's a new outbreak, yes there's always the possibility of a major pandemic and that puts some weight on the need for a fast, cooperative and effective public health response but really the immediate, foreseeable consequences of the outbreak should be the focus and are reason enough to act.
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Billy Quilty @bquilty.bsky.social · 17/05/2026
A key question now is whether this is part of the initial cluster likely spawned by the index case, or potentially a third generation case. Based on what's known about the incubation period/serial interval, I estimate that there is a 74% chance that this a third gen case: github.com/bquilty25/ho...
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Billy Quilty @bquilty.bsky.social · 16/05/2026
This outbreak is already among the worst in history and poses a serious threat to one of the world's most vulnerable and unstable regions, regardless of whether or not it's going to cause issues elsewhere
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Billy Quilty @bquilty.bsky.social · 16/05/2026
I also saw a post about the latest Ebola outbreak with the same "worry" framing!
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Billy Quilty @bquilty.bsky.social · 15/05/2026
It would be beneficial if prominent public health voices could avoid solely framing outbreak risks through the lens of whether they should be something for people in high-income countries to "worry about" or not.
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Billy Quilty @bquilty.bsky.social · 14/05/2026
NB: many more contact surveys in many other countries than those exist, with datasets collated here: zenodo.org/communities/...
zenodo.org
Search Social contact data
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