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Posts by Dr Blanca Perez-Sepulveda

Proud to be part of this incredible multidisciplinary team uncovering why some people are NOT infected by Salmonella. This new Wellcome Trust @wellcometrust.bsky.social funding will allow us to uncover why some people naturally resist infection and colonisation by Salmonella Typhimurium.

5 months ago 55 7 7 0

A true honour to be working alongside very talented colleagues!!

5 months ago 2 0 0 0

This was great team science and many thanks are also due to @danielleingle.bsky.social @ellarodwell.bsky.social @charlotteechong.bsky.social @malakades.bsky.social, @jayhinton.bsky.social and @neilhall.bsky.social of Salmonella10k, @mariechattaway.bsky.social Ben Howden, Deb Williamson and more!

8 months ago 10 2 0 0

Massive thanks to the phenomenal co-first authors @1caiseypulford and @blancaps.bsky.social‬ and especially to one of my favourite scientists to work with, co-corresponding author and fellow history fanatic @weill_xavier 10/n

8 months ago 6 2 2 0
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So, welcome to your new genomic understanding of S. Panama and please go ahead and check out the data yourselves on the associated ‪@microreact.bsky.social‬ page! microreact.org/project/span... 9/n

8 months ago 5 1 1 0
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As a final analysis we compared the predicted invasiveness of S. Panama with other broad and narrow host range serovars and found it was comparable to other major causes of iNTS (thanks to @nwheeler443.bsky.social‬ for the ML classifier to do so) 8/n

8 months ago 5 2 1 0
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Temporal analysis revealed that the four major clades all emerged in the late 1800s, coincident with European efforts to build the Panama canal (‘Panama Fever’ by ‪@matthewparker70.bsky.social‬ is recommended reading for those with an interest in the history here) 7/n

8 months ago 4 1 1 0
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We also found multidrug resistance cassettes; fluoroquinolone resistance (bumping S. Panama onto the WHO AMR priority pathogens list); and a single extensively drug-resistant isolate 6/n

8 months ago 4 1 1 0
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Although antimicrobial resistance (AMR) levels were low overall (14% of isolates), resistant isolates were predominately found in Clade 2 (European-associated) and Clade 4 (associated with Oceania and Asia) 5/n

8 months ago 4 1 1 0
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Population structure analyses revealed the presence of four major Clades that had significant geographic associations 4/n

8 months ago 4 1 1 0
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To better characterise S. Panama we sequenced a global collection of isolates (n=731) from public health surveillance datasets from @ukhsa.bsky.social‬ @thedohertyinst.bsky.social‬, historical collections from ‪@pasteur.fr‬ and publicly available data (n=105) from 1931 to 2019 3/n

8 months ago 4 1 1 0
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S. Panama causes major disease concerns, including high rates of iNTS in French Guiana, large outbreaks in European pork, AMR in Asia, and outbreaks in American soldiers from where the first (extant) isolate from 1931 came from (More in our 2019 review: 10.1128/IAI.00273-19) 2/n

8 months ago 6 3 1 0

Finally out!! It was a long time in the making, I hope you enjoy it!! #salmonella #iNTS #AMR

8 months ago 6 6 0 0

Great work led by the talented @edcoakes.bsky.social!!

11 months ago 2 0 0 0

Our paper is out!! Take a look at this comprehensive 🧵 by @edcoakes.bsky.social, one of the most talented and persistent scientists I work with

11 months ago 1 0 0 0
Advanced genomics study improves detection of hard-to-find diarrhoeal infections - University of Liverpool News Advanced genomics study improves detection of hard-to-find diarrhoeal infections

12/12 📰 For more background and wider context, check out the @liverpooluni.bsky.social press release covering this study’s impact on understanding and diagnosing infectious intestinal diseases: news.liverpool.ac.uk/2025/05/20/a...

11 months ago 5 4 1 0
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11/12 🙏 A big thank you to all my amazing collaborators who made this work possible @blancaps.bsky.social @jayhinton.bsky.social @acdarby.bsky.social (PI) and many of the INTEGRATE consortium not on BlueSky.
Thank you to @nihr.bsky.social for funding via the second HPRU-GI @livuni-ives.bsky.social.

11 months ago 6 2 2 0
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9/12 📊 RNA/DNA ratios differed significantly between positive and negative cases, helping distinguish true infection from bystander carriage and providing a molecular readout of microbial activity.

11 months ago 3 1 1 0

8/12 📦 Critically, RNA in stool remained stable enough for pathogen detection without preservatives (and after self-sample and surviving the mail service!), providing evidence for the routine potential of metatranscriptomics in clinical settings (with some work!)

11 months ago 5 2 1 0
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7/12 🧫 For the first time, we captured a comprehensive snapshot of Salmonella gene expression from a human stool sample. These data reveal how bacteria survive and adapt after leaving the gut. Explore via Hinton Lab’s interactive browser: jb.hintonlab.com/index.html?d...

11 months ago 3 2 1 0
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6/12 🦠➡️🧬 Metatranscriptomics also detected Cryptosporidium via its RNA virus, CSpV1, previously reported in diarrhoeic animals (doi.org/10.1186/s135...). Cryptosporidium was undetectable in metagenomic data, suggesting RNA sequencing can sensitively detect it when DNA methods fall short.

11 months ago 2 1 1 0
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5/12 🦠 Metatranscriptomics captured active Adenovirus F infections via broad transcriptome coverage (in a couple of samples, near complete!), despite it being a DNA virus, highlighting its use in profiling ongoing viral activity during diarrhoeal illness.

11 months ago 2 1 1 0
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4/12
🧪 Metatranscriptomics showed superior sensitivity, with strong correlation to conventional diagnostics for 6/15 pathogens and to Luminex for 8/14.
🧬 Metagenomics performed well for some targets but showed lower overall concordance.

11 months ago 3 2 1 0
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🔬 3/12 As a part of the INTEGRATE study, we sequenced stool from 1,067 patients using both metagenomics and metatranscriptomics. We identified pathogens in these data and benchmarked against routine diagnostics and Luminex xTAG GPP, a multiplex test for key bacterial, viral, and parasitic pathogens.

11 months ago 2 1 1 0
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2/12 💩 Diarrhoea affects ~18 million annually in the UK, yet traditional diagnostics often miss causes, especially hard-to-culture or emerging pathogens. Our work shows how next-generation sequencing can transform the detection and understanding of GI infections.

11 months ago 2 1 2 0
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1/12 🎉 We're excited to announce our Genome Medicine paper benchmarking 1000+ metagenomes (DNA) and metatranscriptomes (RNA) from infectious intestinal disease patients against pathogen diagnostics. The full dataset is public to accelerate pathogen discovery & surveillance: doi.org/10.1186/s130...

11 months ago 29 15 2 1
Importance of diversity and representation in science: benefits towards strengthening our response to global challenges - npj Antimicrobials and Resistance Diversity is a mechanism that pathogens use to adapt and survive new challenges, like the introduction of antimicrobials in modern medicine. With antimicrobial resistance increasing and antibiotic dev...

Absolutely love this new publication by my colleagues @blancaps.bsky.social & @emmabeansworth.bsky.social

We need to foster an inclusive research culture with diverse representation to tackle global issues now and in future.

www.nature.com/articles/s44...

1 year ago 7 3 0 0
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And a huge thanks to @jessicamablair.bsky.social for inviting me to write this piece. We knew how important & timely such a piece was but little did we know that it would be even more important now more than ever. Let’s us all keep pushing for a more inclusive scientific community 🧑🏻‍🔬🧑🏼‍🔬🧑🏽‍🔬🧑🏾‍🔬🧑🏿‍🔬👨‍🔬👩‍🔬

1 year ago 3 2 1 0

Really delighted to see this out in npj antimicrobials and resistance! @emmabeansworth.bsky.social @blancaps.bsky.social & @edcoakes.bsky.social have done a fantastic job with this 🤩

1 year ago 18 6 0 0

Delighted to have to have contributed to this alongside excellent scientists! @emmabeansworth.bsky.social @blancaps.bsky.social.

As a scientific community, it’s currently more important than ever to continue advocating for EDI.

Please read our thoughts in the context of AMR (link in quoted post).

1 year ago 6 3 0 0