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    Health & Fitness

    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.

    Advertise

    Copyright: © Vincent Racaniello 2022

    • Apple Podcasts
    • Google Play
    • Spotify

    Latest Episodes:
    TWiP 278: Trichinella from eating bear eyeballs Apr 24, 2026
    Show notes

    TWiP solves the case of the male in his 20s from Hokkaido, Japan, who developed fatigue and rash, followed by fever and myalgia 6 days later, after eating a raw bear eyeball.

    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: Sir Nicholas White (1951 – 2026) (Guardian, Lancet)
    • Letters read on TWiP 278
    • TWiP study – information and survey

    New Case

    3 yo child who recently immigrated to the US from Central America is brought in to the ER with acute right lower quadrant abdominal pain. The mother is concerned about the pain as well as nausea and vomiting. This is acute and the ER provider is concerned that this might be an acute surgical emergency. They order an US in this child and they are surprised to see a rather active serpiginous wormlike 'thing' wiggling away in the child's appendix. I was sent the Ultrasound video which I really enjoyed. What to do?

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 277: Rif-ing on river blindness Apr 21, 2026
    Show notes

    TWiP 277: Rif-ing on river blindness April 21, 2026

    TWiP reviews the global, regional, and national burden of Chagas disease, and comparison of doxycycline and rifampicin for the treatment of onchocerciasis.

    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
    • Burden of Chagas' disease (Lancet Inf Dis)
    • Doxycycline vs rifampicin in treatment of river blindness (Open For Inf Dis)
    • The kissing bug by Daisy Hernandez
    • TWiP study – information and survey

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 276: Travel history is the key Mar 23, 2026
    Show notes

    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 of five individuals on a hunting trip prior to this and reports that 3 friends are just fine but one other individual developed similar symptoms. He reports that they had been hunting the Ussuri brown bear, which is larger and more aggressive than the Asian black bear. They had been successful and all five of them had consumed well cooked bear meat. He does share that he is aware of infectious risk from eating bear and thus the meat was well cooked. He and the one fellow hunter who did get sick were unique in that they each ate one of the eye balls raw. This is a tradition that is felt to give the consumer the great vision that these animals are purported to have.

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 275: Novel malaria vector control Mar 12, 2026
    Show notes

    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 mosquitoes (NEJM)
    • Singapore Environmental Health Institute (TWiV 630)
    • TWiP study – information and survey

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv


    TWiP 274: Four tablets for bloating Feb 17, 2026
    Show notes

    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 comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 273: Intestinal parasites in dogs Feb 06, 2026
    Show notes

    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)
    • Zoonotic protozoal diseases of companion animals (Clin Micr Rev)
    • Canine visceral leishmaniasis (Leish Vet, pdf)
    • Immune Responses in leishmaniasis (Trop Med Inf Dis)
    • Canine leishmaniasis in the US (Today's Vet Prac)
    • TWiP study - information and survey

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 272: Don't look and you won't find Jan 15, 2026
    Show notes

    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 there for a week before he develops problems. Bloating, diarrhea. Weathers the storm. Returns to US. Stool sent for testing. Some interesting results. Comes back positive for Hymenolepis nana, Blastocystis hominis, Giardia intestinalis. Recommended he take four tablets. Flatulence. HIV negative. He ate food that were prepared in the home but also out. Delhi area.

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees

    Dear TWiP listeners,

    Have you ever wondered how TWiP shapes your understanding of science? We have! To find out more, Christina and the team are running a survey based study to learn more about how TWiP contributes to your scientific literacy and trust in science. Listen to the segment in this episode (TWiP 267) where Christina discusses the study's aims and scope.

    Anyone who listens to TWiP can participate. The survey is anonymous and we do not collect personal data that could identify you. There are no potential disadvantages or harms in taking part, other than using a few minutes of your time. You will receive no direct benefit from taking part in this study. However, the information that is collected during this study will give us a better understanding of who our listeners are, and why they choose to listen to TWiP. We can use this understanding to make TWiP even better!

    This is an academic study and we aim to disseminate our findings to the wider public, including you. For example, we'll have a conversation about the findings on a future episode of TWiP, we plan conference presentations and publication in a relevant academic journal

    The project has been reviewed and approved by the University of Glasgow College of Medical, Veterinary & Life Sciences Ethics Committee. Application 200250013

    You can find the study, detailed participant information, and consent information here:

    TWiP study – information and survey


    TWiP 271: The silent lesion Dec 23, 2025
    Show notes

    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

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


    TWiP 270: They bake my noodle Nov 28, 2025
    Show notes

    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 issues related to his end-stage renal disease. Infectious disease is consulted as he has a report of a recent positive strongyloides serology test that was done as part of his pre-transplant evaluation. He reports no international travel, no interesting exposures.

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees

    Dear TWiP listeners,

    Have you ever wondered how TWiP shapes your understanding of science? We have! To find out more, Christina and the team are running a survey based study to learn more about how TWiP contributes to your scientific literacy and trust in science. Listen to the segment in this episode (TWiP 267) where Christina discusses the study's aims and scope.

    Anyone who listens to TWiP can participate. The survey is anonymous and we do not collect personal data that could identify you. There are no potential disadvantages or harms in taking part, other than using a few minutes of your time. You will receive no direct benefit from taking part in this study. However, the information that is collected during this study will give us a better understanding of who our listeners are, and why they choose to listen to TWiP. We can use this understanding to make TWiP even better!

    This is an academic study and we aim to disseminate our findings to the wider public, including you. For example, we'll have a conversation about the findings on a future episode of TWiP, we plan conference presentations and publication in a relevant academic journal

    The project has been reviewed and approved by the University of Glasgow College of Medical, Veterinary & Life Sciences Ethics Committee. Application 200250013

    You can find the study, detailed participant information, and consent information here:

    TWiP study – information and survey


    TWiP 269: Peripatetic Martin Grobusch Nov 21, 2025
    Show notes

    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 study – information and survey

    Become a patron of TWiP

    Send your questions and comments to twip@microbe.tv

    Music by Ronald Jenkees


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