Dr Emma Hodcroft's Avatar

Dr Emma Hodcroft

@firefoxx66.bsky.social

Die VirenjΓ€gerin! 🏹🧬! Using programming & phylogenetics, I study & track viruses. Co-developer of Nextstrain, based at Swiss TPH & Uni Basel. Founder of the orig SC2 variant-tracking website, CoVariants.org I like 🐈 & πŸ›« @firefoxx66@mstdn.science

17,358 Followers  |  181 Following  |  316 Posts  |  Joined: 09.05.2023  |  2.4611

Latest posts by firefoxx66.bsky.social on Bluesky

Oh my god they found poisson steve

#poissonsteve

07.12.2025 19:47 β€” πŸ‘ 18    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
A screenshot of the front page of Pathoplexus' website, showing the addition of a tile for Marburg Virus.

A screenshot of the front page of Pathoplexus' website, showing the addition of a tile for Marburg Virus.

1/ πŸš€ Pathoplexus now supports Marburg virus (MARV) and Ravn virus (RAVN) (sister viruses in the same genus). MARV has two main clades and causes severe disease with reported fatality rates of 24–88%.

You can read more detail about adding Marburg here: pathoplexus.org/news/2025-11...

28.11.2025 12:37 β€” πŸ‘ 29    πŸ” 17    πŸ’¬ 1    πŸ“Œ 1

The change to the CDC website to reflect unscientific, agenda-driven mindsets is deeply upsetting.

But let's not forget there are a lot of excellent scientists still working there. Persisting. Trying to minimise damage.

Let's not stop supporting them - while condemning those in charge!

23.11.2025 12:42 β€” πŸ‘ 52    πŸ” 8    πŸ’¬ 1    πŸ“Œ 0

9/ πŸ” We invite clinicians, surveillance labs & researchers to explore the dataset & share your feedback.

Feedback? Questions? Drop a comment, DM or on GitHub. Like to join us in creating more EV datasets? Please reach out!

Thank you to everyone working on #Enteroviruses!πŸ™πŸΌ

20.11.2025 12:49 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

8/ πŸ™πŸ»With our thanks:

This dataset was created by Nadia Neuner-Jehle, Alejandra Gonzalez Sanchez, & Emma Hodcroft - with help from Nextclade creators Richard Neher @neher.io & Ivan Aksamentov - and the input and advice of the ENPEN community!

20.11.2025 12:49 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

7/ πŸ”œ Looking ahead:

We’re planning expansions - other non‐polio enteroviruses such as EV-A71, CVA10, CVA16.

πŸ”­ Future features we hope to add: a recombination QC flag, gene-specific clade assignments.

Stay tuned & we welcome your input!

20.11.2025 12:49 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

6/ πŸ’» Running locally:

You can also use the new EV-D68 dataset locally via the Nextclade CLI - perfect for integrating into workflows and sequencing pipelines!

Find out more about the CLI here: docs.nextstrain.org/projects/nex...

20.11.2025 12:49 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
Screenshot showing the results screen of Nextclade, with example D68 sequences having been run, showing the sequence name, QC status, clade assignment, and mutations relative to the reference

Screenshot showing the results screen of Nextclade, with example D68 sequences having been run, showing the sequence name, QC status, clade assignment, and mutations relative to the reference

Screenshot of the tree view in Nextclade, with the D68 sequences having been run. The sequences provided by the user show up as solid circles and thick lines, highlighting their position in the reference tree, which is shown as thin lines.

Screenshot of the tree view in Nextclade, with the D68 sequences having been run. The sequences provided by the user show up as solid circles and thick lines, highlighting their position in the reference tree, which is shown as thin lines.

5/ πŸ’‘ How to use it (cont):

- In the results: you’ll see QC status (red/yellow/white), clade calls, mutation counts, coverage gaps, etc. πŸ” πŸš©πŸ’―
- The tree view places your sequences into the global phylogeny alongside curated reference data. 🌳

20.11.2025 12:49 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Screenshot showing the EV-D68 dataset on Nextclade, with some example data loaded, ready to run

Screenshot showing the EV-D68 dataset on Nextclade, with some example data loaded, ready to run

4/ πŸ’‘ How to use it:

- Go to nextclade.org β†’ choose the EV-D68 dataset or go to clades.nextstrain.org?dataset-name...

- Drag & drop your FASTA (or load example)

- Click Run - alignment, QC & clade assignment happen in your browser (no data leaves your computer)

20.11.2025 12:49 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

3/ What the D68 dataset can do:

- Clade assignments (A1–A2/D, B1–B3, C) πŸ” 
- Whole-genome mutation calling (not just VP1) Ⓜ️
- Quality-control (QC) metrics 🚩
- Gene annotations across the genome 🧬

πŸ‘‰πŸ» So even if VP1 is missing, you can still assign the clade reliably.

20.11.2025 12:49 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Enterovirus D68 now on Nextclade! Check out the new Nextclade dataset for Enterovirus D68!

2/ Why this is important:

πŸ“ˆ EV-D68 cases are already rising this season.

πŸ“‚ This dataset lets clinicians & researchers quickly run clade assignments, mutation calls, and QC checks directly in their browser - with no data uploaded

Detailed info here!: eve-lab.org/blog/EV-D68-...

20.11.2025 12:49 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Video thumbnail

1/ πŸš€ Exciting news: we’ve just released the first Nextclade dataset for Enterovirus D68 (EV-D68), developed in collaboration with the European Non-Polio Enterovirus Network (ENPEN).

πŸ‘‰πŸ» Check out the dataset on Nextclade! clades.nextstrain.org?dataset-name...

#EVD68 #Enterovirus #OpenData

20.11.2025 12:49 β€” πŸ‘ 49    πŸ” 15    πŸ’¬ 1    πŸ“Œ 2
Graph showing the change in number of directly submitted sequences to Pathoplexus since August 2024. 0 in Aug 2024 to almost 9000 today.

Graph showing the change in number of directly submitted sequences to Pathoplexus since August 2024. 0 in Aug 2024 to almost 9000 today.

1/ πŸš€ Big thanks to our community - since August we’ve added thousands of new sequences, rolled out major new features, and welcomed fresh faces into the #Pathoplexus world. Let’s dive into what’s new.πŸ‘‡πŸ»

Read the full update: pathoplexus.org/news/2025-11...

18.11.2025 19:01 β€” πŸ‘ 25    πŸ” 8    πŸ’¬ 1    πŸ“Œ 2

Looking forward to sharing @pathoplexus.org next week at the @evbc.bsky.social Viruses in Silico lecture! Tune in if you'd like to hear about open but protected data sharing, simple uploads, & transparent governance - all to help with easier, faster viral genome sharing!
#opendata #openscience

18.11.2025 07:53 β€” πŸ‘ 17    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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πŸ“’ Next Viruses in silico lecture:
πŸŽ™οΈ Pathoplexus: A Community-Driven Solution for Transparent and Equitable Viral Genomic Data Sharing
πŸ‘©β€πŸ”¬ Emma Hodcroft @firefoxx66.bsky.social (@swisstph.ch @sib.swiss)
πŸ—“οΈ 27 Nov 2025 πŸ•‘ 4 PM CET
πŸ“ Zoom - Register to receive login details
πŸ‘‰ tinyurl.com/VirInSilico

17.11.2025 22:27 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 2

Particularly now, and for secure, respected, influential people in more democratic institutions, I think the excuses grow weak.

But as a limited-contract, early-career scientist who spent a lot of pandemic night awake, terrified of being targeted, I can vouch that it's a tough & shit situation.

16.11.2025 11:14 β€” πŸ‘ 13    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

On top of that, there's stories that certain people email & call your supervisor, boss, or even dean, calling for outright termination. That's scary.

And, there's interlinking at high levels. If there's friendships at govt level above you - you may not have any choice in what you can say publicly.

16.11.2025 11:11 β€” πŸ‘ 16    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

For many scientists, if they are dependant on the data for their work, they feel their backs are against the wall. It's not 'right' - but it's a cut-throat profession. Loose access to what you've but your career on, and you risk losing your entire career. That's tough to ask of anyone.

16.11.2025 11:10 β€” πŸ‘ 10    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0

It was previously supported by an arm of the government, but I think current involvement is unclear. However, it was never part of the German government. Initially, it was a collaboration with SIB, currently it's officially a Verein in Germany, and more recently set up a US-based non-profit.

16.11.2025 11:08 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The blog post at Nextstrain details the reasons they gave us (nextstrain.org/blog) , but it can be different in each case, and for the overall reason, we aren't sure.

16.11.2025 11:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Director, Center for Pathogen Bioinformatics The Centre for Pathogen Bioinformatics (CPB) is a unit of SIB which offers expertise and services in pathogen bioinformatics, computational molecular epidemiology and related multi-site project manage...

Open position at the Swiss Institute of Bioinformatics:
We are looking for a Director of the Center of Pathogen Bioinformatics
apply.refline.ch/499599/0346/...
I am in the Center's steering board together with fantastic colleagues (Emma Hodcroft @firefoxx66.bsky.social, Richard Neher @neher.io, and

25.10.2025 13:03 β€” πŸ‘ 21    πŸ” 34    πŸ’¬ 1    πŸ“Œ 0

The file came w an agreement and/or understanding that it was for display - & requirements to comply (credit, amount of detail, GISAID logo size).

Yes, the data is still available via GISAID website - but this is prohibited by DAA from display.

So GISAID decides what tools the public get.

07.11.2025 14:44 β€” πŸ‘ 59    πŸ” 8    πŸ’¬ 3    πŸ“Œ 0

I want to spell this out in case the implications aren't clear:

This means all public tools/webapps of GISAID data (all the ones you've been used to seeing thru the pandemic, as far as we can tell) are prohibited.

The file allowed this. Cut that - cut off all tools the public & others were using.

07.11.2025 14:41 β€” πŸ‘ 258    πŸ” 141    πŸ’¬ 2    πŸ“Œ 8

We've run a build based on NCBI + other open data for a long time now. However it doesn't contain all the data that is in GISIAID. You can find it here: nextstrain.org/ncov/open/gl...

07.11.2025 12:27 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nextstrain does pull from NCBI - but does not contain all the data that is in GISAID. You can see our 'open data' (non-GISAID) build here: nextstrain.org/ncov/open/gl...

07.11.2025 12:25 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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On Oct 1, 2025, GISAID informed us that they had ended updates to the flat file of SARS-CoV-2 genomic sequences and associated metadata that we had used to update Nextstrain analyses since Feb 2020. GISAID's stated rationale was that their "resources are limited". 1/5

06.11.2025 21:46 β€” πŸ‘ 123    πŸ” 74    πŸ’¬ 4    πŸ“Œ 15
Post image 28.10.2025 08:52 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

From @torstenseemann.bsky.social at @pha4ge.bsky.social Conference; "We are stealing from research money to support public health."

We need dedicated funding for maintaining & supporting public health infrastructure & pipelines. Not just startup, not just in pandemics.

28.10.2025 08:52 β€” πŸ‘ 13    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0
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Thrilled & honoured to have run the first @pathoplexus.org workshop with @chaoranchen.de @pagasi.bsky.social @kanyerezi30.bsky.social & Arthur Shem Kasambula at @pha4ge.bsky.social on Saturday! πŸŽ‰πŸ€

A fantastic turnout & wonderful time spent with curious users!

27.10.2025 07:57 β€” πŸ‘ 39    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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BREAKING: Friday night massacre underway at CDC. Doznes of "disease detectives," high-level scientists, entire Washington staff and editors of the MMWR (Morbidity and Mortality Weekly Report) have all been RIFed and received the following notice:

11.10.2025 02:10 β€” πŸ‘ 15385    πŸ” 8445    πŸ’¬ 849    πŸ“Œ 1111

@firefoxx66 is following 20 prominent accounts