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This Week in Parasitism

by Vincent Racaniello

Chart positions today · Japan

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Latest episodes

  • Dogs, Parasites, and an Exhausted Immune System

    October 2, 2026 · 58 min

    TWiP explains a single-cell analysis of immune cells in the blood of dogs with canine leishmaniosis, providing a detailed picture of how the immune response changes as the disease progresses. Hosts: Vincent Racaniello, Daniel Griffin, and…

  • Taco Bell and the Case of the Runny Jobbies

    September 21, 2026 · 1 hr 7 min

    TWiP solves the case of the NYC woman in her 30s who developed 3 weeks of significant watery diarrhea after eating at a Taco Bell Restaurant. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe (free): Apple…

  • A Vaccine Against Schistosomiasis? SchistoShield Heads to Phase 2

    September 8, 2026 · 47 min

    Mumtaz Balkhi joins TWiP to discuss phase 1 and 1b trials of the schistosomiasis vaccine SchistoShield which demonstrate that it induces functional immune memory responses in US and African populations. Hosts: Vincent Racaniello, Daniel…

  • Pinworms keep coming back! How to stop reinfection in your home

    August 27, 2026 · 1 hr 12 min

    TWiP solves the case of the adult female with a 2 year old child who develops anal irritation, but the child and the husband are fine. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe (free): Apple…

  • Why Is Cyclospora So Hard to Contain? Parasitologists Explain the 2026 US Outbreak

    August 6, 2026 · 53 min

    TWiP reviews our current understanding of the biology of Cyclospora, the parasite currently causing a large multistate outbreak in the US traced to contaminated lettuce, and why it is so difficult to control. Hosts: Vincent Racaniello and…

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  • It's not the pork

    July 27, 2026 · 51 min

    TWiP solves the case of the 39-year-old man originally from Guatemala, who moved to one of the NYC boroughs in 2023 and presented with headaches for nearly 1 year. Hosts: Vincent Racaniello, Daniel Griffin, and Christina Naula Subscribe…

  • Warming up to cryptosporidiosis

    July 7, 2026 · 1 hr 1 min

    TWiP reviews the projected impact of climate change on the burden of Cryptosporidium in Mali, Kenya, and The Gambia. Hosts: Vincent Racaniello and Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for…

  • Does he live in New York?

    June 24, 2026 · 54 min

    TWiP solves the case of the nonbinary patient in his 30s with a history HIV/AIDS presenting with 3 weeks of subjective fevers, chills, generalized weakness and voluminous ostomy output. Hosts: Vincent Racaniello, Daniel Griffin, and…

  • Ants under the influence

    June 22, 2026 · 58 min

    TWiP reviews gene expression in wood ants infected with the larval lancet fluke, which causes them to leave their nest and attach to a flower until they are eaten by a grazing mammal. Hosts: Vincent Racaniello, Daniel Griffin, and…

  • The wriggling diagnosis

    May 29, 2026 · 57 min

    TWiP solves the case of the 3 yo child, who recently immigrated to the US from Central America, in the ER with acute right lower quadrant abdominal pain and a rather active serpiginous wormlike 'thing' wiggling away in the child's…

  • Tolling for hookworms

    May 1, 2026 · 51 min

    TWiP reviews a phase 2 clinical trial of a recombinant vaccine against N. americanus glutathione S-transferase-1, an enzyme that performs a crucial enzymatic step in hookworm blood feeding. Hosts: Vincent Racaniello, Daniel Griffin, and…

  • Trichinella from eating bear eyeballs

    April 24, 2026 · 56 min

    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…

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About the show

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.