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PODCAST

This Week in Parasitism

Vincent Racaniello

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.

science life sciences

All Episodes

54:26

TWiP 267: It dropped from her scalp

This Week in Parasitism ·

2025/10/21

TWiP solves the case about the female who traveled to Brazil and upon returning home felt movements under her scalp on the back of her head, and present another case for your solving, a man with abnormal brain MRI. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Guest: Eyal Leshem Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Life cycle of Dermatobia hominis (CDC) Letters read on TWiP 267 TWiP study -

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01:00:52

TWiP 266: Wraps and ivermectin for malaria

This Week in Parasitism ·

2025/10/06

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

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40:53

TWiP 265: Things that jump are cleaner than things...

This Week in Parasitism ·

2025/09/26

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,

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43:53

TWiP 264: Toxoplasma changes your brain

This Week in Parasitism ·

2025/08/29

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 twip@microbe.tv Music by Ronald Jenkees

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57:40

TWiP 263: Tick-tock

This Week in Parasitism ·

2025/08/21

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

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01:03:52

TWiP 262: Do schistosomes affect behavior?

This Week in Parasitism ·

2025/07/29

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

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01:12:14

TWiP 261: A case for Dr. Hickam

This Week in Parasitism ·

2025/07/04

TWiP solves the case of the pregnant woman from Tanzania with dehydration and 3 weeks of bloody stool, a situation that would confuse Ockam but not Dr. Hickam. 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: Dame Bridget Ogilvie (Interview and Wiki) Letters read on TWiP 261 New Case I feel like the back section of our book has been a bit neglected. The new PD

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01:05:37

TWiP 260: Daily rhythms

This Week in Parasitism ·

2025/06/24

TWiP explains how circadian clocks of parasite and vector circadian mediate efficient malaria transmission. 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 Clocks mediate malaria transmission (Nat Micro) Hero: Dame Bridget Ogilvie (Wiki) Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees

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57:16

TWiP 259: Know your knowlesi

This Week in Parasitism ·

2025/06/02

TWiP solves the case of the man in the Malaysian city of Kucheng who presents with daily fevers and shaking chills, and serve a new clinical puzzle for you to solve. 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 Letters read on TWiP 259 New Case Another case from Northern Tanzania, up by the border of Kenya. 32 yo pregnant woman admitted to the hospital,

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01:02:39

TWiP 258: The deeper, the rounder

This Week in Parasitism ·

2025/05/13

TWiP describes how a gut commensal protozoan influences respiratory disease outcomes by shaping pulmonary immunity, and body shape variation in lice that parasitize diving hosts. 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 Gut commensal shapes pulmonary immunity (Cell) The deeper the rounder (Sci Rep) Become a patron of TWiP Send your questions and comments

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51:03

TWiP 257: Malaya and Malaysia

This Week in Parasitism ·

2025/04/20

TWiP solves the case of the man in the Malaysian city of Kucheng who presents with left arm swelling, and presents a new case for you to decipher. 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 Letters read on TWiP 257 New Case We are still in Kuching, Malaysia in the northern part of the Island of Borneo. This is the Sarawak portion of Malaysia. A man in his late

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01:02:55

TWiP 256: Amazing antimalarial drug resistance

This Week in Parasitism ·

2025/04/04

TWiP explains a study that carries out selection of Plasmodium falciparum in the presence of inhibitors to identify determinants of drug resistance, and a paleoparasitological analysis of a 5th–16th c. CE latrine. 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 Naegleria fowleri acquired at splash pad (MMWR) Determinants of P. falciparum drug resistance (Science)

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56:45

TWiP 255: Katayama fever

This Week in Parasitism ·

2025/03/22

Michelle Labrunda joins TWiP to solve the case of the Georgian in Guinea with fever and dry cough, and describe a new case for you to solve. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Guest: Michelle Labrunda Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Letters read on TWiP 255 New Case A man who is on eculizumab, a recombinant humanized monoclonal antibody that targets complement protein C5 which serves

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01:00:47

TWiP 254: Our hero Dickson

This Week in Parasitism ·

2025/03/09

TWiP explains a study which finds that tissue spaces are reservoirs of antigenic diversity for Trypanosoma brucei, then remembers our departed colleague Dickson Despommier. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Click arrow to play Download TWiP #254 (88 MB .mp3, 61 minutes) Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Tissue spaces are reservoirs of antigenic diversity for T. brucei (Nature)

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01:01:47

TWiP 253: Sub-Saharan somnolence

This Week in Parasitism ·

2025/02/22

TWiP solves the case of the man with somnolence and something extra-erythrocytic, and presents a new puzzle for you to solve. 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 Letters read on TWiP 253 New Case 26-year-old female with no past medical history. Patient is from Georgia in the US and is volunteering in Hérico, Guinea (town in the Lélouma Prefecture in the

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54:27

TWiP 252: For malaria vaccine, mosquito is the needle

This Week in Parasitism ·

2025/02/10

TWiP discusses a study of the safety and immunogenicity of a late liver-stage attenuated malaria parasite delivered by mosquito bite. 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 Live attenuated malaria vaccine (NEJM) Plasmodium metabolism during hepatic development (Cell) Heroes – Jimmy and Rosallyn Carter, and the Carter Center The Carter Center Guinea Worm

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57:29

TWiP 251: Case of the facial ulcer

This Week in Parasitism ·

2025/01/17

TWiP solves the case of the woman who went to Belize and notices a lesion on her face, and presents a new clinical case for you to solve. 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 Letters read on TWiP 251 New Case Recent case, Arusha hospital, 1800 m, 28 yo comes in, has been visiting game parks. Developing fevers, malaise, bad headaches, body aches,

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51:46

TWiP 250: Gut bacteria help Trichinella suppress colitis

This Week in Parasitism ·

2025/01/03

TWiP reviews a study showing that the gut microbiota is essential for suppression of colitis by Trichinella spiralis. 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 Gut bacteria and Trichinella suppression of colitis (PLoS NTD) Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees

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55:48

TWiP 249: A virus and a parasite

This Week in Parasitism ·

2024/12/20

TWiP solves the case of the middle-aged man with eosinophilia and a history of sexual activity with paid sex workers in Okinawa, and presents a new case for you to solve. 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 Letters read on TWiP 249 New Case Woman in 30s or 40s goes to Belize and after returning notices a lesion on her face. She goes to see several

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01:06:59

TWiP 248: Toxoplasma reduces Alzheimer's disease

This Week in Parasitism ·

2024/12/06

TWiP reviews the observation that infection of Azlheimer’s disease mice with Toxoplasma gondii reduces brain amyloid density globally and regionally. Hosts: Vincent Racaniello, Dickson Despommier, Daniel Griffin, and Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Toxoplasma reduces amyloid in brain (J Inf Dis) Hero: Theodor Hiepe (Parasitol Res) Become a patron of TWiP Send your questions and comments

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