#Oocyst
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proptermalone.bsky.social
love seeing the word "oocyst"

whenever that comes up you know good things are happening
July 15, 2026 at 3:21 PM
goldenpipette.bsky.social
Incredibly proud to share that our work on Cryptosporidium Oocyst Wall Proteins is published in
@PLOSPathogens
journals.plos.org/plospathogen...

Led by previous PhD student
@BacchettiRoss
and carried on by current PhD student, Sarah Stevens.
Cryptosporidium oocyst wall proteins are true components of the oocyst wall and COWP8 is not required for parasite transmission
Author summary Infection with Cryptosporidium causes diarrhoea, which can be fatal for malnourished children or people who are immunocompromised. There is no vaccine or effective medicines available t...
journals.plos.org
October 23, 2025 at 6:40 PM
beaconbio.bsky.social
US FDA identifies cyclospora at Taylor Farms de Mexico facility; iceberg lettuce investigation closes at 12 883 cases and two deaths
https://beaconbio.org/en/report/?reportid=af0c83ae-b92d-464a-8596-a95133668145&eventid=f4c53ac1-a8bb-4baf-b97b-4b764df4f66d&utm_source=bluesky&utm_medium=social
Oocyst of C. cayetanensis stained with safranin (SAF)
October 4, 2026 at 7:30 PM
drawstickpeople.bsky.social
I want a salad

I won't be eating a salad

Word of the day is sporulate but bonus points if you can pronounce oocyst!
July 16, 2026 at 4:50 AM
parasitejournal.bsky.social
Effect of household bleach on the structure of the sporocyst wall of Toxoplasma gondii [2021 🧪]
This study suggests that the inner layers of the oocyst and sporocyst walls are the main structures responsible for the resistance of the parasite to household bleach.
doi.org/10.1051/para...
Abstract Toxoplasma gondii oocysts are responsible for food- and water-borne infections in humans worldwide. They are resistant to common chemical disinfectants, including chlorinated products, presumably due to the structure and molecular nature of the oocyst wall but also the sporocyst wall. In this study, we used fluorescence microscopy and transmission electron microscopy to characterise the structure of both the oocyst and sporocyst walls, exposed to household bleach. Bleach removed the outer layer of the oocyst wall and the outer layer of the wall of sporocysts exposed due to rupture of the oocyst wall. The loss of the outer sporocyst wall layer was associated with a decrease in its autofluorescence, which can be linked to the degradation of dityrosine cross-link proteins, and loss of Maclura pomifera lectin-reactive glycoproteins. This study suggests that the inner layers of the oocyst and sporocyst walls are the main structures responsible for the resistance of the parasite to household bleach.
January 15, 2025 at 8:48 PM
parasitejournal.bsky.social
For #YearOfTheSnake, a few papers on parasites of snakes:

Caryospora matatu, a new coccidian parasite from the horned bush-viper from Tanzania [2002🧪]

More details: doi.org/10.1051/para...
Abstract Caryospora matatu n. sp. is the first species of coccidia reported from the a horned bush viper, Atheris ceralophorus endemic to Tanzania. Oocysts are spherical or slightly subspherical, 19.8 (16-23) µm, a micropyle and an oocyst residuum are absent, a single polar granule is present. An oocyst wall is bilayered, ~ 1.5 µm thick, brownish and distinctly pitted. Sporocysts are ellipsoidal, 15.6 (12.5-17.0) x 10.1 (8-12) µm, tightly fitting an internal oocyst diameter, Stieda and substieda bodies are present. An experimental inoculation of SCID mice did not confirm a facultatively heteroxenous life cycle in the studied coccidium. Morphology and evolutionary history of Caryospora species from viperids is is reviewed and discussed.
January 30, 2025 at 5:27 PM
historiahysteria.bsky.social
delete later

formalin
debris
ethyl acetate
sediments

schistosoma
operculated
cestode
c philippinensus
t trichuria
trematode

surface film
zinc sulfate
debris

hookworm
g lamblia
coccidian oocyst
February 21, 2025 at 2:12 AM
stinasdemons.com
I have read several articles/news stories on the cyclosporiasis outbreak and am aghast that most of their advice to avoid it is to "wash hands thoroughly & wash all fresh produce."

Which, yes- this is what you should ALWAYS do, but WASHING DOES NOT REMOVE OR KILL THE PARASITE. ONLY COOKING DOES.
INFECTIOUS DISEASE Does Washing Produce Remove the Cyclospora Parasite? AT A GLANCE Washing produce does not reliably remove or kill the Cyclospora parasite. The parasite is housed in a resilient, highly sticky oocyst that resists water, produce washes, and chemical sanitizers. The only effective way to destroy Cyclospora on food is by thoroughly cooking, baking, or boiling it.
July 11, 2026 at 4:07 PM
freddyfrischknecht.bsky.social
End of year fireworks: the cover showing fully formed Plasmodium sporozoites in an oocyst by expansion microscopy accompanies our review on the functions of circumsporozoite protein; blue: anti-CSP antibody, magenta: DNA. Congrats Kevin and Maren for the beautiful image.
December 5, 2024 at 10:19 AM
iuidfellowship.bsky.social
#idboardreview Adolescent girl eating lot of salad mixes from the store present with explosive watery diarrhea, bloating, flu like sx. Stool specimen shown with 8 micrometer oocyst. Patient improved without any treatment. dx? #meded #idmedEd #idsky
February 27, 2026 at 2:25 AM
beaconbio.bsky.social
Multistate, USA: CDC reports 1645 domestic cases cyclosporiasis with over 5100 additional cases pending confirmation, salad greens suspected
https://beaconbio.org/en/report/?reportid=cca7d68e-e687-4106-944e-70f6ba14ff05&eventid=f4c53ac1-a8bb-4baf-b97b-4b764df4f66d&utm_source=bluesky
Oocyst of C. cayetanensis stained with safranin (SAF)
July 15, 2026 at 5:45 PM
lshtm-malaria.bsky.social
Ahead of #WorldMalariaDay2025, @lshtm.bsky.social ’s Human Malaria Transmission Facility reports its most successful P. falciparum / A. coluzzii infections to date—advancing lab-based research in the global fight against malaria.

Read more 👉 bit.ly/4lL8YiA
The image shows Anopheles coluzzii mosquito midguts heavily infected with Plasmodium falciparum oocysts (orange circles). Each single oocyst can produce around 10,000 sporozites that have the potential to infect a human with malaria when the mosquito next bites. The image shows Anopheles coluzzii mosquito midguts heavily infected with Plasmodium falciparum oocysts (orange circles). Each single oocyst can produce around 10,000 sporozites that have the potential to infect a human with malaria when the mosquito next bites.
April 24, 2025 at 1:25 PM
thamlab.bsky.social
Pfs48/45 nanobodies block transmission

🦟 Pfs48/45 Nb-Fc reduce oocyst numbers
💎 Structure of transmission-blocking Nb with Pfs48/45
👐🏽 Bispecific Nb-Fc targeting both Pfs230 and Pfs48/45
🧑🏻‍🔬 PhD student Frankie Lyons 1st Author 🥳

Please repost and happy reading!

www.biorxiv.org/content/10.1...
Pfs48/45 nanobodies block Plasmodium falciparum transmission
Malaria parasite fertilisation occurs within the Anopheles mosquito midgut. Interventions that inhibit parasite fertilisation prevent ongoing transmission and are important for malaria elimination eff...
www.biorxiv.org
April 26, 2025 at 11:58 PM
karenho.bsky.social
This 2007 research paper says raspberries treated with UV light resulted in "reduced infection rates, which varied with oocyst inoculum level and UV intensity": pubmed.ncbi.nlm.nih.gov/18095439/
Checking your browser - reCAPTCHA
pubmed.ncbi.nlm.nih.gov
July 15, 2026 at 9:51 PM
cp-trendsparasitol.bsky.social
Review in this collection: The #Plasmodium #circumsporozoite protein #CSP, authored by Mirko Singer, Sachie Kanatani, Stefano Garcia Castillo, @freddyfrischknecht.bsky.social, and Photini Sinnis. #Malaria #Vaccine #Mosquito #Oocyst #Adhesion #GPIanchor

www.cell.com/trends/paras...
January 23, 2025 at 10:55 AM
katjathieme.bsky.social
What health professionals need to know about cyclosporiasis Cyclospora oocysts, when freshly passed in the stool, are not sporulated. Therefore, they are not infective. Oocysts require 7 to 15 days outside the host to develop and mature into the infective sporulated oocyst. Thus, direct fecal-oral transmission is precluded. When ingested, Cyclospora oocysts excyst in the gut and release sporozoites, which invade the epithelial cells of the small intestine. Clinical manifestations After an average incubation period of 1 week, symptomatic infections typically manifest as watery diarrhea, which can be severe. Other symptoms include: fatigue anorexia myalgias weight loss abdominal pain low-grade fever nausea and vomiting Untreated infections typically last for 6 to 7 weeks and may follow a relapsing course. Infections, especially in disease-endemic settings, can be asymptomatic.
July 12, 2026 at 8:13 PM
reecelab.bsky.social
We have a new paper investigating how mosquito nutrition affects malaria development.

Our findings suggest malaria parasites may actively adjust oocyst growth rate to best exploit nutritional resources.

doi.org/10.3389/fmal...
Frontiers | Plasticity in malaria parasite development: mosquito resources influence vector-to-host transmission potential
Parasites rely on exploiting resources from their hosts and vectors for survival and transmission. This includes nutritional resources, which vary in availab...
doi.org
November 1, 2024 at 9:36 AM
harvard-iid.bsky.social
#DefenseDissertation #Malaria #Oocyst #Thesis #AcademicSky #SciencySky
April 20, 2026 at 2:54 PM
beaconbio.bsky.social
Michigan, USA reports 13 909 cyclosporiasis cases and two deaths amid multistate outbreak linked to iceberg lettuce
https://beaconbio.org/en/report/?reportid=a1a9a340-4761-45eb-ad80-35730a172fb8&eventid=f4c53ac1-a8bb-4baf-b97b-4b764df4f66d&utm_source=bluesky&utm_medium=social
Oocyst of C. cayetanensis stained with safranin (SAF)
August 16, 2026 at 2:45 PM
zendarva.bsky.social
Ohhh. a new word i hadn't seen before.

Looks techy.

OOCyst. Is... this a term for bad OOP?

*google*

Ooooh, it's about the current issues with.. err... garbage collection. *cough*
July 15, 2026 at 3:23 PM
beaconbio.bsky.social
Cyclosporiasis, USA - further increases in cases reported across multiple US States; national numbers released by US CDC; investigations ongoing
https://beaconbio.org/en/report/?reportid=a319184b-e9c0-4c9c-816e-1fd22884c7d4&eventid=f4c53ac1-a8bb-4baf-b97b-4b764df4f66d&utm_source=bluesky
Oocyst of C. cayetanensis stained with safranin (SAF)
July 10, 2026 at 8:45 PM
parasitejournal.bsky.social
Coccidian parasites in the endangered Forest Musk Deer (Moschus berezovskii) in China, with the description of six new species of Eimeria (Apicomplexa: Eimeriidae) [2021 🧪]
doi.org/10.1051/para...
[Abstract in Alt]
Abstract We examined 674 fresh fecal samples from forest musk deer (Moschus berezovskii Flerov) in Sichuan and Shaanxi Provinces, China, for coccidian oocysts and 65% were infected with Eimeria spp. Previously, only four Eimeria species were known from Moschus spp. Here we describe six new Eimeria species. Eimeria aquae n. sp., in 38% deer, has ovoidal oocysts, 32.0 × 23.0 μm, micropyle (M) and scattered polar granules (PGs) of various sizes are present, sometimes oocyst residuum (OR) is present; ovoidal sporocysts, 14.1 × 7.5 μm, with Stieda body (SB) and sporocyst residuum (SR). Eimeria dolichocystis n. sp., in 11% deer; cylindroidal oocysts, 36.6 × 18.9, with a M, 1 PG and OR; ovoidal sporocysts, 13.9 × 7.7, with SB and SR. Eimeria fengxianensis n. sp., in 7% deer; ovoidal oocysts, 36.3 × 25.2, a M and PGs present but OR absent; ovoidal sporocysts, 13.9 × 7.3, with SB and SR. Eimeria helini n. sp. in 24% deer; subspheroidal oocysts, 27.0 × 24.1, OR and PGs often present, but M absent; ovoidal sporocysts, 13.5 × 7.7, with SB and SR. Eimeria kaii n. sp. in 26% deer; ovoidal oocysts, 33.2 × 20.7, M and PGs present, but OR absent; ovoidal sporocysts, 14.4 × 7.5, with SB and SR. Eimeria oocylindrica n. sp., in 17% deer; cylindroidal oocysts, 36.0 × 21.4, M and 1-2 PGs present but OR absent; ovoidal sporocysts, 13.8 × 7.7, with SB and SR. Eimeria dujiangyanensis n. nom. is proposed to replace E. moschus Sha, Zhang, Cai, Wang & Liu, 1994, a junior homonym of E. moschus Matschoulsky, 1947.
January 15, 2025 at 8:43 PM
natmicrobiol.nature.com
Out Now! A single-cell atlas of Toxoplasma sexual development in the feline intestinal tract #MicroSky
A single-cell atlas of Toxoplasma sexual development in the feline intestinal tract
Nature Microbiology, Published online: 22 April 2026; doi:10.1038/s41564-026-02294-7Single-cell RNA sequencing is used to study the sexual development of Toxoplasma gondii in cats, generating a transcriptional atlas and showing that the female-specific gene AP2X6 functions as a regulator of oocyst formation.
go.nature.com
April 22, 2026 at 6:28 PM