Cassandra Koh ๐ŸฆŸ๐Ÿ”ฌ๐Ÿงช's Avatar

Cassandra Koh ๐ŸฆŸ๐Ÿ”ฌ๐Ÿงช

@cassandrakoh.bsky.social

Mosquito Virus Ecology group leader at Institut Pasteur, FR. #Mosquito #Virome #OneHealth #Arbovirus

2,388 Followers  |  542 Following  |  17 Posts  |  Joined: 22.10.2024  |  2.1172

Latest posts by cassandrakoh.bsky.social on Bluesky

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...

07.08.2025 10:48 โ€” ๐Ÿ‘ 10    ๐Ÿ” 9    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Post image

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

18.07.2025 13:09 โ€” ๐Ÿ‘ 12    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
The Pirbright Institute hiring Postdoctoral Researcher in Woking, England, United Kingdom | LinkedIn Posted 1:09:44 PM. Postdoctoral Researcher โ€“ (24P-73)The Pirbright Institute Salary: ยฃ38,5000 to 40,000 per annum36โ€ฆSee this and similar jobs on LinkedIn.

We have a postdoc position available in which weโ€™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...

04.06.2025 10:20 โ€” ๐Ÿ‘ 18    ๐Ÿ” 19    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
Post image Post image

๐Ÿ“ฃ 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 ๐ŸฆŸ or arbovirology ๐Ÿฆ 
๐Ÿ—“๏ธ Application deadline 31 August 2025

28.07.2025 09:25 โ€” ๐Ÿ‘ 56    ๐Ÿ” 61    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Aedes albopictus (asian tiger mosquito)

Aedes albopictus (asian tiger mosquito)

๐ŸฆŸ 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

11.07.2025 21:43 โ€” ๐Ÿ‘ 26    ๐Ÿ” 25    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 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 ....

07.07.2025 07:20 โ€” ๐Ÿ‘ 24    ๐Ÿ” 13    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 0

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 letโ€™s push the frontiers of virus research together. The sky is the limit! ๐Ÿฆ ๐Ÿ”ฌ #Virology #Science #TeamPasteur

01.07.2025 20:29 โ€” ๐Ÿ‘ 94    ๐Ÿ” 7    ๐Ÿ’ฌ 7    ๐Ÿ“Œ 3
Preview
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.

๐Ÿšจ Save the date!!
We're hosting the next European Congress of Entomology (ECE) in Tours, France ๐Ÿ‡ซ๐Ÿ‡ท from 29 June to 3 July 2026 ๐Ÿž๐Ÿฆ‹๐Ÿœ
๐Ÿ”ฌ 50+ symposia covering nearly every aspect of insect science
๐Ÿ“… Registration opens 10 July 2025
๐Ÿ”— Stay tuned: www.ece2026.org
#ECE2026 #Entomology #Insects

24.06.2025 06:54 โ€” ๐Ÿ‘ 12    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

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 pigeonsโ€ฆ

24.06.2025 12:27 โ€” ๐Ÿ‘ 136    ๐Ÿ” 130    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 6
Preview
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 โญ

Donโ€™t miss the chance to present your scientific work in one of our 13 participating institutes and increase your network!

๐Ÿ“† Register by June 15th, 2025 here: docs.google.com/forms/d/e/1F...

#ParisPostdocs

03.06.2025 18:30 โ€” ๐Ÿ‘ 9    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 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 vectorโ€“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% (nโ€…=โ€…20) of blood meals from #Aedes albopictus while 20% (nโ€…=โ€…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

27.05.2025 04:18 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Glad to see this out!! Itโ€™s been bafflingly difficult to convince people that assuming mosquito transmission of Oropouche is a sloppy prior directly contradicted by all available evidence ๐Ÿฅฒ and that, in turn, itโ€™s a serious problem that we know so little about Culicoides paraensis distributionโ€ฆ

30.04.2025 18:18 โ€” ๐Ÿ‘ 35    ๐Ÿ” 12    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
A graphic for the Marie Skล‚odowska-Curie Actions (MSCA), showing a historical portrait of Marie Skล‚odowska-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 Skล‚odowska-Curie Actions โ€“ โ‚ฌ404.3 million to support postdoctoral researchersโ€

A graphic for the Marie Skล‚odowska-Curie Actions (MSCA), showing a historical portrait of Marie Skล‚odowska-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 Skล‚odowska-Curie Actions โ€“ โ‚ฌ404.3 million to support postdoctoral researchersโ€

Choose Science. Choose Europe.

A new Marie Skล‚odowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.

With a budget of โ‚ฌ404.3 million, it will support around 1,650 researchers from Europe and beyond.

Apply by 10 September โ†’ europa.eu/!fBTMgF

08.05.2025 10:12 โ€” ๐Ÿ‘ 959    ๐Ÿ” 563    ๐Ÿ’ฌ 15    ๐Ÿ“Œ 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. https://www.biorxiv.org/content/10.1101/2025.04.23.650034v1

25.04.2025 04:17 โ€” ๐Ÿ‘ 1    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Post image Post image Post image

๐Ÿงต1/ Introducing ExpBites, a lightweight #rstats ๐Ÿ“ฆ to analyze mosquito biting exposure according to hourly activities and locations of human and #mosquitoes. Built for modeling true expected #bednet efficacy.๐ŸฆŸโ›บ๏ธ

๐Ÿ“ฆ GitHub: buff.ly/tImDQdv
๐ŸŽš๏ธ Shiny app: buff.ly/t9oMOwv

#malaria #anopheles

22.04.2025 10:48 โ€” ๐Ÿ‘ 13    ๐Ÿ” 5    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
Preview
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/...

07.04.2025 19:53 โ€” ๐Ÿ‘ 49    ๐Ÿ” 24    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 1
AedesTraits: A global database of temperatureโ€“dependent trait responses in Aedes mosquitoes

Our new preprint (ecoevorxiv.org/repository/v...) describesโœจAedesTraitsโœจ (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)!

14.04.2025 11:36 โ€” ๐Ÿ‘ 12    ๐Ÿ” 9    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
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 โš•๏ธ #EpiSky ๐ŸฆŸ

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

10.04.2025 19:27 โ€” ๐Ÿ‘ 23    ๐Ÿ” 11    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 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 ๐Ÿ‘‡

11.04.2025 16:14 โ€” ๐Ÿ‘ 100    ๐Ÿ” 99    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
Preview
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 nervoโ€ฆ

www.sciencedirect.com/science/arti... ๐ŸฆŸ

27.03.2025 19:14 โ€” ๐Ÿ‘ 6    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Too important a read not to repost
#NewPI ๐Ÿ‘€

14.03.2025 15:49 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I forgot that first author @kdainty.bsky.social is on Bsky too...Congrats Kim on this nice work!
#SymbioSky ๐ŸฆŸ

14.03.2025 15:41 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Check out this neat piece of work using transcriptomics to link viral infections to altered aging processes... Also doesn't love a study with its own mascot? ๐Ÿงช๐Ÿชฐ๐Ÿฆ 

14.03.2025 15:37 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

New work out from @heatherflores.bsky.social & colleagues: Wolbachia genome show little variation post-introgression into natural Aedes aegypti populations, a non-native insect host. Super interesting finding on host-symbiont relationships and great news for Wolbachia-based vector control efforts!๐ŸฆŸ๐Ÿงช

14.03.2025 10:03 โ€” ๐Ÿ‘ 9    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
Preview
Dengue virus susceptibility in Aedes aegypti linked to natural cytochrome P450 variants The mosquito Aedes aegypti is the primary vector for dengue virus (DENV), which infects millions of people annually. Variability in DENV susceptibility among wild Ae. aegypti populations is governed b...

Happy to share our work exploring the genetic basis of dengue susceptibility in Aedes aegypti and revealing the antiviral role of a cytochrome P450. www.biorxiv.org/content/10.1...
It had been a long and wild ride that started back when I was a postdoc within @lambrechtslab.bsky.social ! A thread โฌ‡๏ธ

28.02.2025 12:17 โ€” ๐Ÿ‘ 30    ๐Ÿ” 18    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
Post image

Prepare your calendars ๐Ÿ“… because the March 2025 #ParisPostdocs Seminarsโ€™ newsletter is out ๐Ÿ’ซ See you all at @institutcurie.bsky.social @crcordeliers.bsky.social and Paris Brain Institute!

03.03.2025 17:34 โ€” ๐Ÿ‘ 1    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

Those factors certainly do play a role! And they're being studied by ecologists and epidemiologists who are better equipped that I am to investigate from those angles, though I'd love to collaborate with them someday! Mosquitoes are just one part of the equation

03.03.2025 13:23 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Sustained Wolbachia-mediated blocking of dengue virus isolates following serial passage in Aedes aegypti cell culture Abstract. Wolbachia is an intracellular endosymbiont of insects that inhibits the replication of a range of pathogens in its arthropod hosts. The release o

4) Emergence (or not) of resistance mutations in dengue virus against Wolbachia-induced inhibition
doi.org/10.1093/ve/v...

I'm excited to bring in a virus ecology spin into my research and I'm looking forward to meeting new colleagues in the virus evolution and microbial ecology spaces!
๐Ÿงต5/5

03.03.2025 12:59 โ€” ๐Ÿ‘ 45    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Dengue virus dominates lipid metabolism modulations in Wolbachia-coinfected Aedes aegypti - Communications Biology Koh, Islam, Ye et al. describe lipid profiles of Aedes aegypti mosquitoes bearing mono- or dual-infections of Wolbachia (wMel) and dengue virus serotype 3 (DENV3), finding that virus modulation domina...

3) Metabolic interactions between dengue virus and dengue-blocking Wolbachia in the mosquito
doi.org/10.1038/s420...
๐Ÿงต4/5

03.03.2025 12:59 โ€” ๐Ÿ‘ 49    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
Interactions of the Insect-Specific Palm Creek Virus with Zika and Chikungunya Viruses in Aedes Mosquitoes Palm Creek virus (PCV) is an insect-specific flavivirus that can interfere with the replication of mosquito-borne flaviviruses in Culex mosquitoes, thereby potentially reducing disease transmission. W...

2) Transfection and testing for arbovirus inhibition of a mosquito-specific virus in Aedes aegypti and A. albopictus mosquitoes www.mdpi.com/2076-2607/9/...
๐Ÿงต3/5

03.03.2025 12:59 โ€” ๐Ÿ‘ 38    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

@cassandrakoh is following 20 prominent accounts