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

This Week in Parasitism

Release Date: 09/26/2025

TWiP 285: Why Is Cyclospora So Hard to Contain? Parasitologists Explain the 2026 US Outbreak show art TWiP 285: Why Is Cyclospora So Hard to Contain? Parasitologists Explain the 2026 US Outbreak

This Week in Parasitism

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:  and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV   of Cyclospora cayetanensis (Comp Rev Food Sci Food Safety) Become a  of TWiP  Send your questions and comments to  Music by 

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TWiP 284: It's not the pork show art TWiP 284: It's not the pork

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV   on TWiP 284 New Case Recent ID consult: MD/PhD mother doing research, married with child 2 yo, female develops anal irritation, husband is fine, child is fine. Parasitic etiology is considered. Referred to academic ID providers, turns out she had this etiology considered, had received some...

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TWiP 283: Warming up to cryptosporidiosis show art TWiP 283: Warming up to cryptosporidiosis

This Week in Parasitism

TWiP reviews the projected impact of climate change on the burden of Cryptosporidium in Mali, Kenya, and The Gambia. Hosts: and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV   on Cryptosporidium (J Inf Dis)  on TWiP 283 Become a  of TWiP  Send your questions and comments to  Music by 

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TWiP 282: Does he live in New York? show art TWiP 282: Does he live in New York?

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Parasite of the Month:  (the green-banded broodsac)  on TWiP 282 New Case 39-year-old man originally from Guatemala, who moved to one of the NYC boroughs in 2023 and currently lives with his siblings and cousins, presented with headaches. He reports headaches for several...

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TWiP 281: Ants under the influence show art TWiP 281: Ants under the influence

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Gene expression in wood ants  (Mol Ecol) Visualisation of the master manipulator in the (Sci Rep) Become a  of TWiP  Send your questions and comments to  Music by 

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TWiP 280: The wriggling diagnosis show art TWiP 280: The wriggling diagnosis

This Week in Parasitism

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 appendix. Hosts: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Hero:   on TWiP 280 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...

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TWiP 279: Tolling for hookworms show art TWiP 279: Tolling for hookworms

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Phase 2  clinical trial (Lancet Inf Dis) Phase 2  clinical trial (Vaccines) Become a  of TWiP  Send your questions and comments to  Music by 

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TWiP 278: Trichinella from eating bear eyeballs show art TWiP 278: Trichinella from eating bear eyeballs

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Hero: Sir Nicholas White (1951 – 2026) (, )  on TWiP 278 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....

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TWiP 277: Rif-ing on river blindness show art TWiP 277: Rif-ing on river blindness

This Week in Parasitism

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: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Burden of  (Lancet Inf Dis)  in treatment of river blindness (Open For Inf Dis) Become a  of TWiP  Send your questions and comments to  Music by 

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TWiP 276: Travel history is the key show art TWiP 276: Travel history is the key

This Week in Parasitism

TWiP solves the case of the man in his 60s experiencing weight loss, fatigue, and loss of appetite. Hosts: , , and Christina Naula Subscribe (free): , , ,  Links for this episode Join the MicrobeTV  Hero:   on TWiP 276 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...

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More Episodes

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 RacanielloDaniel Griffin, and Christina Naula

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Links for this episode

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?

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Music by Ronald Jenkees