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This Week in Parasitism

Vincent Racaniello
This Week in Parasitism
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  • TWiP 266: Wraps and ivermectin for malaria
    TWiP explains research showing that treatment of baby wraps with an insect repellent, and oral dosing with ivermectin, are both effective measures to prevent malaria. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Treated baby wraps prevent malaria (NEJM) Oral ivermectin prevents malaria (NEJM) Become a patron of TWiP  Send your questions and comments to [email protected] Music by Ronald Jenkees
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  • TWiP 265: Things that jump are cleaner than things that squat
    TWiP solves the case about the parasite check in summer camp, and presents a new case about a woman who traveled to Brazil and developed furuncles on the back of her head. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Hero: Francesco Redi Wikipedia: https://en.wikipedia.org/wiki/Francesco_Redi Linda Hall Library, Kansas: https://www.lindahall.org/about/news/scientist-of-the-day/francesco-redi/ Habermehl, G., (1994). Francesco Redi—Life and work, Toxicon 32 (4) https://doi.org/10.1016/0041-0101(94)90292-5. Letters read on TWiP 265 New Case From Eyal Leshem, a returning case “provider” 43 years old female who travelled to Brazil on May 2025 for a two week dance class. The dance school is located in a farm two hour drive West of Rio de Janeiro.  Upon return to Israel she started feeling pricking and “movements” and under her scalp on the back of her head. She noted three non-healing furuncles on the back of her head A month after she returned movement and pricking in the back of her scalp increased, the furuncles enlarged and produced serous discharge. Several days before her ED visit she thinks an “object” dropped from the back of her scalp, but being outdoors, she could not locate the object.  On physical examination she is afebrile and her vitals are normal, and on the back of her head two indurated   were detected under the hair on the back of her head. Serous discharge was produced by pushing the furuncles. A non-surgical office procedure led to immediate recovery and confirmed the diagnosis.  What was the parasite? What was the procedure? Become a patron of TWiP  Send your questions and comments to [email protected] Music by Ronald Jenkees  
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  • TWiP 264: Toxoplasma changes your brain
    Vincent and Daniel discuss research showing that Toxoplasma gondii infection of the brain alters extracellular vesicle production and the communication between neurons and astrocytes. Hosts: Vincent Racaniello and Daniel Griffin Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server T. gondii infection of neurons (PLoS Path) Become a patron of TWiP  Send your questions and comments to [email protected] Music by Ronald Jenkees
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  • TWiP 263: Tick-tock
    TWiP solves the case of the world travelers with poppy-seed size dots embedded in their skin, then present a new case about parasite check in summer camp. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Hero: Dr Laurence Tetley Letters read on TWiP 263 New Case It is the first day of summer camp and the children are lined up for a parasite check. Some of the children have certificates that allow them to bypass the screening. Some of the parents are upset about this process commenting that this is not required by the state and report this could not be a problem for their children. One by one the children have their scalps examined and 2 of the children are asked to step to the side. The parents of these two children are contacted and told that they must address the identified concern before they can attend the camp. They are treated with a topical therapy on their hair with repeat in 1 week. The upset parents have several questions that hopefully our listeners can address. -what is this all about? -is anyone suggesting this is a hygiene issue? -what is the most sensitive way to look for this problem? -how do we know it is cured? -feel free to talk about the life cycle Become a patron of TWiP  Send your questions and comments to [email protected] Music by Ronald Jenkees
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  • TWiP 262: Do schistosomes affect behavior?
    TWiP reviews research suggesting that schistosome infection affect behavior through the gut-brain axis, and Chuck Knirsch joins to reminisce about Dickson Despommier. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Guest: Chuck Knirsch Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Does schistosome infection affect behavior? (PLoS NTD) Hero: Harold Brown (NY Times) Become a patron of TWiP  Send your questions and comments to [email protected] Music by Ronald Jenkees
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About This Week in Parasitism

TWiP is a monthly netcast about eukaryotic parasites. Vincent Racaniello and Dickson Despommier, science Professors from Columbia University, deconstruct parasites, how they cause illness, and how you can prevent infections.
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