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Aris Katzourakis

@ariskatzourakis

Viruses, Evolution, Education, Trade Unions, things like that. Prof at Uni of Oxford, NEC member for UCU. Posts mine, reposts not.

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25.09.2023
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Latest posts by Aris Katzourakis @ariskatzourakis

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Fast-spreading measles outbreak takes hold among under-10s in north London UK Health Security Agency urges parents in Enfield to get their children vaccinated as Easter holiday travels approach

This is really not a headline I expected to have to read in 2026.

www.theguardian.com/society/2026...

15.02.2026 23:05 πŸ‘ 37 πŸ” 18 πŸ’¬ 1 πŸ“Œ 0

She is one of a kind, we can give her that.

08.02.2026 21:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Neat work, showing that the entire evolution of a variant of concern can happen in one persistently infected individual over about a year.

02.02.2026 17:43 πŸ‘ 27 πŸ” 7 πŸ’¬ 0 πŸ“Œ 1

Absolutely, effective public health requires collective effort.

29.01.2026 13:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Remembering William Foege, public health pioneer and Emory professor Renowned epidemiologist William Foege, credited with devising the strategy to eradicate smallpox, passed away Jan. 24 at age 89. Emory’s Presidential Distinguished Professor Emeritus of International ...

A tribute to William Foege, and a reminder of how much can be achieved in public health (eradication of smallpox) with top class science and political determination.

news.emory.edu/features/202...

29.01.2026 12:53 πŸ‘ 18 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0

Pleased to see our research team's work on the @erc.europa.eu funded PALVIREVOL project feature on this ERC report into frontier research for one health @biology.ox.ac.uk.

erc.europa.eu/sites/defaul...

27.01.2026 14:32 πŸ‘ 11 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

Austria loses its WHO status as measles-free, too, together with Armenia, Azerbaijan Uzbekistan and Spain. This comes as no surprise, considering the rise in numbers in recent years and the decline in MMR vaccine coverage
#VaccineHesitancy #PublicHealthImpact #AllChildrenNeedProtection

27.01.2026 05:12 πŸ‘ 307 πŸ” 122 πŸ’¬ 7 πŸ“Œ 28
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UK loses WHO status as measles-free after rise in deaths and fall in jab uptake UN health body says Britain is one of six countries in Europe and central Asia where disease has become re-established

UK loses WHO status as measles-free after rise in deaths and fall in jab uptake

www.theguardian.com/society/2026...

26.01.2026 22:50 πŸ‘ 72 πŸ” 22 πŸ’¬ 2 πŸ“Œ 4

I suppose the current US administration's vaccine stance shouldn't be so surprising. Vaccines sit awkwardly with their worldview: they rely on collective action, trust in institutions, expertise, and shared responsibility. Accepting an individual inconvenience, for shared benefit.

23.01.2026 13:57 πŸ‘ 36 πŸ” 16 πŸ’¬ 0 πŸ“Œ 1
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HI-FEVER: a Nextflow pipeline for the high-throughput discovery and annotation of endogenous viral elements AbstractSummary. Endogenous viral elements (EVEs) offer valuable insights into virus and host evolution, but their detection remains computationally and bi

Wanting to do some paleovirology of your own? We recently published HI-FEVER, enabling users to run their own fast searches for endogenous viral elements.

Huge thanks to @humanceae.bsky.social, @emma-harding.bsky.social, JosΓ© Gabriel and Cormac.

@biology.ox.ac.uk

academic.oup.com/bioinformati...

08.01.2026 13:02 πŸ‘ 24 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0
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The golden age of vaccine development - Works in Progress Magazine The first vaccine was a lucky accident. Now we can design new vaccines in weeks, atom by atom.

NEW article by me!

We can now visualize pathogens down to atoms; design vaccines in weeks; manufacture them in microbial factories; engineer them more precise than ever before.

We're living through a golden age of vaccine development, but only if we continue to invest in them.

07.01.2026 15:20 πŸ‘ 327 πŸ” 126 πŸ’¬ 9 πŸ“Œ 15
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HI-FEVER: a Nextflow pipeline for the high-throughput discovery and annotation of endogenous viral elements AbstractSummary. Endogenous viral elements (EVEs) offer valuable insights into virus and host evolution, but their detection remains computationally and bi

Wanting to do some paleovirology of your own? We recently published HI-FEVER, enabling users to run their own fast searches for endogenous viral elements.

Huge thanks to @humanceae.bsky.social, @emma-harding.bsky.social, JosΓ© Gabriel and Cormac.

@biology.ox.ac.uk

academic.oup.com/bioinformati...

08.01.2026 13:02 πŸ‘ 24 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0
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UK children to get chickenpox vaccine with measles, mumps and rubella jab NHS to administer combined immunisation in move in line with approach in US, Canada, Australia and Germany

Good news, if a little overdue

www.theguardian.com/society/2026...

02.01.2026 01:55 πŸ‘ 52 πŸ” 9 πŸ’¬ 1 πŸ“Œ 0

Really exciting work!

19.12.2025 08:52 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Oncolytic Reovirus mediates innate-driven SARS-CoV-2 elimination in the absence of cell toxicity Interplay between type I interferon (IFN) driven innate responses and viral antagonism strongly influences SARS-CoV-2 transmission and the COVID-19 disease course. Hence, variant adaptation includes d...

Sometimes, viruses don't have to be the bad guys...
Sometimes we can use one to treat another!

Chuffed to present excellent work from Dr Samantha Garcia-Cardenas showing how the innate immune system can be "rewired" by a benign Reovirus to eliminate SARS2 infection.

www.biorxiv.org/content/10.6...

19.12.2025 07:06 πŸ‘ 82 πŸ” 24 πŸ’¬ 7 πŸ“Œ 3

🧡1/ Flu is surging again, & patterns look uncomfortably familiar. The lesson from covid remains unchanged: individual responsibility isn’t enough. We need systemic measures that make protective behaviours easy. @profstevegriffin.bsky.social Stephen Reicher & I offer some thoughts @bmj.com

16.12.2025 11:49 πŸ‘ 317 πŸ” 124 πŸ’¬ 3 πŸ“Œ 17

Why are virologists thinking and talking about this year's strain of influenza? We are dealing with a version of H3N2 that is unusual compared to what we might expect year on year. At the same time, it is not as unusual as, say, a novel pandemic strain, far from it.

15.12.2025 13:40 πŸ‘ 80 πŸ” 35 πŸ’¬ 2 πŸ“Œ 3

I'm sure there is a TikTok market for that

15.12.2025 20:45 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

What can we do about it? Well, masks work, vaccines work, avoiding infection in all the ways we know all work. Is it going to cause health systems to collapse? I really doubt it. It will put pressure on though, more than we might expect in any given year.

15.12.2025 13:40 πŸ‘ 30 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

It could certainly cause more transmission and more pressure on healthcare, though we wouldn't expect a higher intrinsic severity. Will it cause a bigger wave than past years? It could, it might not. Transmission depends on several factors, I would certainly expect the wave to be higher than average

15.12.2025 13:40 πŸ‘ 19 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Its not a novel pandemic strain. This is nothing like a transmission of, say, a novel avian H5N1 strain, its nowhere near that ballpark of danger. But, it also does not look like a run of the mill annual influenza strain.

15.12.2025 13:40 πŸ‘ 21 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

This matters, because it will give some immune escape, meaning the virus could infect people that it otherwise might not, despite pre-existing immunity. It isn't unrecognisable by any stretch, but we expect it to be able to cause more problems.

15.12.2025 13:40 πŸ‘ 20 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

It has more mutations in the haemagglutinin protein the immune system 'sees' than we might expect, more than double the expected antigenic distance and including several mutations in recognised antigenic sites.

15.12.2025 13:40 πŸ‘ 18 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Why are virologists thinking and talking about this year's strain of influenza? We are dealing with a version of H3N2 that is unusual compared to what we might expect year on year. At the same time, it is not as unusual as, say, a novel pandemic strain, far from it.

15.12.2025 13:40 πŸ‘ 80 πŸ” 35 πŸ’¬ 2 πŸ“Œ 3

So, to those who say "masks don't work", cite the flawed Cochrane report, insist upon an unfeasible RCT, accuse folks of panic, and undermine public health on social and mainstream media during a flu/RSV epidemic...

1. Seasonal viruses may be "normal", but they do immense harm.

12.12.2025 11:07 πŸ‘ 444 πŸ” 204 πŸ’¬ 13 πŸ“Œ 41

Do we need a short thread on this year's flu strain.

11.12.2025 20:44 πŸ‘ 31 πŸ” 3 πŸ’¬ 8 πŸ“Œ 0

Really unhelpful to see infectious disease 'experts' reviving the covid culture wars in the middle of a serious influenza wave. If you have flu, staying home if your employment allows, is a great idea. And if you must see others, wear a mask, its will help. Nobody is talking about mandates here.

11.12.2025 10:09 πŸ‘ 88 πŸ” 23 πŸ’¬ 4 πŸ“Œ 1
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β€˜Too little, too late’: damning report condemns UK’s Covid response Report on handling of pandemic contains stinging criticism of β€˜toxic and chaotic’ culture inside Boris Johnson’s No 10

www.theguardian.com/uk-news/2025...

21.11.2025 09:56 πŸ‘ 12 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

And thousands more spared long term after effects of infection (long covid), and the unnecessarily costly effects of overtly long measures necessitated by the delay.

21.11.2025 09:56 πŸ‘ 27 πŸ” 5 πŸ’¬ 1 πŸ“Œ 1
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β€˜Too little, too late’: damning report condemns UK’s Covid response Report on handling of pandemic contains stinging criticism of β€˜toxic and chaotic’ culture inside Boris Johnson’s No 10

Key takehome, a lot of us were highlighting:

"If a lockdown had been imposed on 16 March, a week earlier than took place, modelling suggests this could have cut the number of deaths in England in the first wave of the virus by almost half, equating to 23,000 lives saved, the inquiry authors say."

21.11.2025 09:55 πŸ‘ 63 πŸ” 22 πŸ’¬ 2 πŸ“Œ 7