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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

01:16:39

TWiP 276: Travel history is the key

This Week in Parasitism ·

2026/03/23

TWiP solves the case of the man in his 60s experiencing weight loss, fatigue, and loss of appetite. 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: Bailey K. Ashford Letters read on TWiP 276 TWiP study – information and survey New Case Male in his 20s from Hokkaido, Japan, developed fatigue and rash, followed by fever and myalgia 6 days later. He was a group

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42:13

TWiP 275: Novel malaria vector control

This Week in Parasitism ·

2026/03/12

TWiP reviews the effectiveness of long-lasting spatial repellent emanators against malaria in humanitarian crisis settings in northern Nigeria, and Dengue suppression by male Wolbachia-infected mosquitoes. 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 Spatial emanators for malaria control (Lancet Inf Dis) Dengue suppression with Wolbachia-infected

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47:42

TWiP 274: Four tablets for bloating

This Week in Parasitism ·

2026/02/17

TWiP solves the case of the 40 year old male who travels to India and develops intestinal bloating and diarrhea. 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: Glenn L. Hoffmann Fish and seafood consumption (Our World in Data) Wild fish vs aquaculture (Our World in Data) TWiP study – information and survey Become a patron of TWiP Send your questions and

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01:05:42

TWiP 273: Intestinal parasites in dogs

This Week in Parasitism ·

2026/02/06

TWiP reviews intestinal parasites in dogs and their association with clinical manifestations of canine visceral leishmaniasis. 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 Intestinal parasites in dogs (Vet Parasitol) Zoonotic protozoal diseases of companion animals (Clin Micr Rev) Canine visceral leishmaniasis in stray and owned dogs in Brazil (Acta tropica)

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57:34

TWiP 272: Don't look and you won't find

This Week in Parasitism ·

2026/01/15

TWiP solves the case about the man with positive Strongyloides serology who is waiting for a kidney transplant. 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 Chronic strongyloidiasis (Australian Family Physician) Hero: Gwendoleen Rees (Wikipedia) TWiP study – information and survey Letters read on TWiP 272 New Case 40 year old man travels to India, is only

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49:58

TWiP 271: The silent lesion

This Week in Parasitism ·

2025/12/23

TWiP explores female genital schistosomiasis and associated genital infections in Southern Malawi, a neglected tropical disease. 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 Female genital schistosomiasis in Malawi (Parasitology) Mainstreaming female genital schistosomiasis (Parasitology) Female genital schistosomiasis (WHO) TWiP study – information and survey

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56:40

TWiP 270: They bake my noodle

This Week in Parasitism ·

2025/11/28

TWiP solves the case about the man with abnormal brain MRI, and presents a new case for your solving about a man with some electrolyte issues related to his end-stage renal disease. 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 TWiP study – information and survey Letters read on TWiP 270 New Case A man in his 20s is admitted to the hospital with some electrolyte

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01:03:54

TWiP 269: Peripatetic Martin Grobusch

This Week in Parasitism ·

2025/11/21

TWiP travels to Toronto, CA for the American Society for Tropical Medicine and Hygiene conference where they meet up with Martin Grobusch to discuss his career and his work. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Guest: Martin Grobusch Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Primaquine for blocking malaria transmission (Lancet Inf Dis) Pulmonary tuberculosis, Sierra Leone (New Microb New Inf) TWiP

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01:00:07

TWiP 268: A loyal parasite

This Week in Parasitism ·

2025/11/09

TWiP discusses a 41-year long human infection with Schistosoma mansoni, and CRISPR screens that reveal genes essential for Cryptosporidium survival in the host intestine. 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 41 year old Schistosoma infection (J Travel Med) Genes essential for Cryptosporidium survival in host intestine (Nat Comm) Become a patron of TWiP

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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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