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Posts by Cassandra Koh 🦟🔬🧪

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Exciting news! We’re thrilled to launch the European SOVE Education and Development Committee, to support #EarlyCareer researchers in the #SOVE with training, guides, and resources.

Want to stay updated?
- Join our mailing list: lnkd.in/euneQwF7
- Follow us on LinkedIn for updates and events!

9 months ago 8 5 1 0
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The microbiota affects energy production, nitrogen excretion and sterol metabolism in mosquito larvae Mosquito larvae rely on a living microbiota for normal development because the microbiota supplies essential nutrients, particularly vitamins. Beyond vitamin provision, transcriptomic data suggest tha...

With some delay, I’m happy to share our new preprint: www.biorxiv.org/content/10.6... ! In this work, we aimed to better understand the role of the microbiota in mosquito larval development and nutrition.

3 months ago 3 1 1 0
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Kicking off 2026 the best way we know how: together! 🥐👑

Our annual Galette des Rois brought the team together, and Mori Yoshida claimed the crown for the 4th year running! 🎉

But the real treasure? These moments that unite us before another year of discovery.

Here's to an incredible 2026! 🔬✨

3 months ago 5 2 0 0
Microbiome composition modulates the lethal outcome of Drosophila A virus infection

Not all bacteria are beneficial in every context.

We found that enriching Drosophila with a commensal bacterium reduces tolerance to viral infection. The effect was virus-specific and occurred without changes in viral load, immune gene expression or intestinal damage.

rdcu.be/eZ4Sd

3 months ago 14 6 0 0
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Can we tackle antimicrobial resistance or predict future pandemics?

The first panel of our #OneHealth conference will focus on innovation in surveillance and diagnostics, health systems and more!

👉 buff.ly/bqvaXlW

@cassandrakoh.bsky.social @pasteur.fr @engelmal.bsky.social @epidemy.org

4 months ago 12 6 0 1

So great to finally have this out!!

8 months ago 12 7 0 0
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Implications of successive blood feeding on Wolbachia-mediated dengue virus inhibition in Aedes aegypti mosquitoes - Nature Communications Dengue virus transmission by Ae. aegypti mosquitoes poses a significant public health threat, necessitating innovative control strategies. Here, the authors demonstrate that, while successive blood feeding increases earlier dengue virus dissemination, the inhibitory effects of Wolbachia remain strong, highlighting Wolbachia’s potential to disrupt dengue transmission under natural feeding conditions.

Implications of successive blood feeding on #dengue virus inhibition by Wolbachia in Aedes aegypti mosquitoes

@entomososwin.bsky.social @mallerybreban.bsky.social @brackneylab.bsky.social @chantalvogels.bsky.social @yaleemd.bsky.social

6 months ago 15 7 0 0
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🚀New preprint from our lab!
I am very excited to finally share what has been the main focus of my PhD for the past almost 3 years! It is about viral dark matter and a powerful tool we built to shed light on it. 🧬💡
Continue reading (🧵)

5 months ago 128 54 4 6
The social lives of viruses | Asher Leeks | TEDxNewEngland
The social lives of viruses | Asher Leeks | TEDxNewEngland YouTube video by TEDx Talks

I gave a talk last year at TEDxNewEngland aimed at introducing the idea of viral sociality to a general audience, including implications for evolution & virology. Video now available online below.

#socialviruses #evosky #virosky 🧪

6 months ago 43 17 0 1
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I'm so excited to share this with all of you!
This is the very first paper where I am the first author 🥹
Let me share some insights about our work 👇🧵(1/5):

How do persistent viral infections impact the host?

What happens when a fly becomes persistently infected by a virus?

6 months ago 16 8 2 0

The final round this year for international PhD scholarships at Monash are now open (August 31st 2025). Interested in evolutionary ecology, global change, sex differences, and/or infectious disease? Maybe some ecotox together with @bbmwong.bsky.social. Get in touch. There will be Daphnia involved...

8 months ago 10 9 0 0
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We look forward seeing you Aug. 12 for our next webinar on Vector-Borne and Zoonotic Diseases. Dr Maringer @maringerlab.bsky.social will present "Virus-specific innate immune responses in Aedes aegypti". Register: lnkd.in/gJdiYGm7. @astmh.bsky.social @sbvirologia.bsky.social @utmbhealth.bsky.social

9 months ago 12 4 0 0
The Pirbright Institute hiring Postdoctoral Researcher in Woking, England, United Kingdom | LinkedIn Posted 1:09:44 PM. Postdoctoral Researcher – (24P-73)The Pirbright Institute Salary: £38,5000 to 40,000 per annum36…See this and similar jobs on LinkedIn.

We have a postdoc position available in which we’re using flavivirus replication/molecular biology to make refractory mosquitoes - in collaboration with the Trevor Sweeney lab at @pirbrightinst.bsky.social. Check out the advert on LinkedIn and apply by 12/6.

www.linkedin.com/jobs/view/42...

10 months ago 18 19 0 1
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📣 I'm recruiting a postdoc researcher to join my team for a project on mosquito-specific viruses and host interactions. Peep the job description & how to apply below. Perfect for soon-to-be or recent PhD graduates in mosquito vector biology 🦟 or arbovirology 🦠
🗓️ Application deadline 31 August 2025

8 months ago 57 61 1 0
Aedes albopictus (asian tiger mosquito)

Aedes albopictus (asian tiger mosquito)

🦟 Bioinformatics Research Scientist position open in my lab in Nice (FR) to study Aedes mosquito retrotransposons & their interactions with arboviruses collab w/ @salehlabparis.bsky.social & @lambrechtslab.bsky.social
Apply: euraxess.ec.europa.eu/jobs/359830
Please boost! #ArboRetro #Bioinformatics

9 months ago 26 25 0 1

new from the lab -- we investigate 100% ethanol, DMSO salt solution (DESS), EDTA, RNAlater, and AllProtect as possible approaches for short term room temperature preservation of mosquito HMW DNA, nuclei for Hi-C, and RNA towards high quality reference genome creation. the key findings/tips are ....

9 months ago 24 13 3 0
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Thrilled (and humbled!) to share that since today I am the Chair of the Virology Department at @pasteur.fr. Grateful to my colleagues for their trust. Now let’s push the frontiers of virus research together. The sky is the limit! 🦠🔬 #Virology #Science #TeamPasteur

9 months ago 94 7 7 3
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ECE 2026 - XIII European Congress of Entomology It is our great pleasure to welcome you to Tours, France, in the heart of the Loire Valley, from June 29 to July 3, 2026.

🚨 Save the date!!
We're hosting the next European Congress of Entomology (ECE) in Tours, France 🇫🇷 from 29 June to 3 July 2026 🐞🦋🐜
🔬 50+ symposia covering nearly every aspect of insect science
📅 Registration opens 10 July 2025
🔗 Stay tuned: www.ece2026.org
#ECE2026 #Entomology #Insects

9 months ago 13 8 1 2

In about a week we (Biological Sciences @ Monash Uni in Melbourne, Australia) will be opening a search for 3 (!!!) permanent academic positions (40% research, 40% teaching, 20% service) at Lecturer/Senior Lecturer. 1 Genomics, 2 Ecology. Please share, email me, DM, follow, send carrier pigeons…

9 months ago 135 129 2 6
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Paris Postdocs Seminars - 2025/2026 series Application form for the 2025/2026 Paris Postdocs Seminar series

Big news! Applications for the 2025/2026 Paris Postdocs Seminars series are now open ⭐

Don’t miss the chance to present your scientific work in one of our 13 participating institutes and increase your network!

📆 Register by June 15th, 2025 here: docs.google.com/forms/d/e/1F...

#ParisPostdocs

10 months ago 9 6 1 1
Blood-feeding patterns of #mosquitoes (Diptera: Culicidae) collected in an area of high arbovirus transmission in West-Central Brazil Abstract#mosquitoes target a wide range of vertebrate species for blood meal and study of these vector–host interactions enhances our knowledge of how vector-borne viruses are transmitted. In the last decades, West-Central Brazil has faced the emergence and reemergence of several arboviruses, with a great public health impact. In addition to the well-known #Aedes-borne viruses, such as dengue, Zika, and chikungunya, other arboviruses have spread throughout the country and constitute a continuous public health concern. We report results of blood meal analysis of #mosquitoes (Diptera: Culicidae) collected in urbanized areas of West-Central Brazil during a Zika virus surveillance between 2017 and 2018. Amplification and sequencing of mitochondrial DNA were used to determine vertebrate origin. A total of 284 blood-engorged #mosquitoes belong to 6 genera and 12 species were collected. Of these, we successfully identified blood meal in 146 (51.4%). Collections of blood-fed individuals were dominated by species of #Culex (65.8%) and #Aedes (25.4%). Overall, blood meal profiles demonstrated that humans were the main source (56.8%). Despite anthropophilic preferences, #Aedes aegypti also fed on domestic (12.5%) and wild mammals (8.3%). #Culex spp. showed an ornithophilic pattern. Humans made up 80% (n = 20) of blood meals from #Aedes albopictus while 20% (n = 5) were from horses. Our results expand the knowledge regarding the vertebrate species used as hosts by #mosquitoes in urbanized areas of Brazil. The variety of vertebrate species, including rodents, bats, and humans used by the local #mosquitoes, highlights the continuous risk for spillover events.

Blood-feeding patterns of #mosquitoes (Diptera: Culicidae) collected in an area of high arbovirus transmission in West-Central Brazil JMedEnt

10 months ago 2 1 0 0

Glad to see this out!! It’s been bafflingly difficult to convince people that assuming mosquito transmission of Oropouche is a sloppy prior directly contradicted by all available evidence 🥲 and that, in turn, it’s a serious problem that we know so little about Culicoides paraensis distribution…

11 months ago 35 12 1 0
A graphic for the Marie Skłodowska-Curie Actions (MSCA), showing a historical portrait of Marie Skłodowska-Curie overlaid with an image of four young researchers walking down a hallway. The European Commission logo is in the top left. Text reads: "Marie Skłodowska-Curie Actions – €404.3 million to support postdoctoral researchers”

A graphic for the Marie Skłodowska-Curie Actions (MSCA), showing a historical portrait of Marie Skłodowska-Curie overlaid with an image of four young researchers walking down a hallway. The European Commission logo is in the top left. Text reads: "Marie Skłodowska-Curie Actions – €404.3 million to support postdoctoral researchers”

Choose Science. Choose Europe.

A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.

With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.

Apply by 10 September → europa.eu/!fBTMgF

11 months ago 954 560 15 99

The co-receptors Orco and Ir8a are required for coordinated expression of chemosensory genes in the antennae of the yellow fever mosquito, Aedes aegypti. www.biorxiv.org/content/10.1101/2025.04....

11 months ago 1 1 0 0
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🧵1/ Introducing ExpBites, a lightweight #rstats 📦 to analyze mosquito biting exposure according to hourly activities and locations of human and #mosquitoes. Built for modeling true expected #bednet efficacy.🦟⛺️

📦 GitHub: buff.ly/tImDQdv
🎚️ Shiny app: buff.ly/t9oMOwv

#malaria #anopheles

11 months ago 12 4 1 2
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Demographic history, genetic load, and the efficacy of selection in the globally invasive mosquito Aedes aegypti Abstract. Aedes aegypti is the main vector species of yellow fever, dengue, Zika and chikungunya. The species is originally from Africa but has experienced

Excited to see the final version of this paper with @samurscicop.bsky.social and Daniel Matute out in @genomebiolevol.bsky.social!

We took a dive into the complicated demographic history of Aedes aegypti mosquitoes and its impact on the distribution of genetic diversity
doi.org/10.1093/gbe/...

1 year ago 49 24 4 1
AedesTraits: A global database of temperature–dependent trait responses in Aedes mosquitoes

Our new preprint (ecoevorxiv.org/repository/v...) describes✨AedesTraits✨ (zenodo.org/records/1514...) - A global database on temperature-trait responses in Aedes mosquitoes. #AedesTraits holds >31,000 rows of fully open data extracted from published literature (1930s to 2025)!

1 year ago 13 9 0 0
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The overlapping global distribution of dengue, chikungunya, Zika and yellow fever - Nature Communications Arboviruses transmitted by Aedes mosquitoes have an expanding global distribution and identifying areas at risk is important for public health planning. Here, the authors present global disease maps f...

The overlapping global distribution of #dengue, #chikungunya, #Zika and #yellowfever

#IDsky ⚕️ #EpiSky 🦟

www.nature.com/articles/s41...

1 year ago 23 11 0 0

Come and work with me!

The Nature Micro team is expanding and we're looking for someone to champion microbial ecology, plant micro & related areas for the journal

Knowledge of microbial ecology/plant micro is desirable but we're open to applications from all microbiologists

Link below 👇

1 year ago 100 99 1 1
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Is it time to consider west Nile and Usutu viruses endemic in central Italy? West Nile (WNV) and Usutu (USUV) viruses co-circulated in a region of Central Italy (Lazio) in 2018, as evidenced by the detection of WNV in the nervo…

www.sciencedirect.com/science/arti... 🦟

1 year ago 6 4 1 0