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This Week in Parasitism: Daily Summaries Delivered
by Vincent Racaniello
TWiP is a 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.
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- 2 weeks ago1h 6m
TWiP 290: What's Biting You at Night?
TWiP solves the case of the patient who developed an intensely itchy, red papular rash after close contact with chickens and their bedding, where small mites were found. 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 of the Month: Ogobara Doumbo (Lancet, AJTMH, Lancet) Letters read on TWiP 290 New Case Man in 30s with well controlled diabetes, elevated AST ALT liver tests, asymptomatic. Ultrasound of liver, multiple cysts. Born in rural Yemen, grew up on farm with cattle, sheep, donkeys, 3-4 indoor/outdoor dogs, bathroom inside house, frequently swam in fresh water, as adult worked in construction, 2010 moved to capital, in 2017 Moved to US works in Brooklyn. March 2023 get abnormal lab results. Decide to follow, 1 year later, repeat ultrasound, 3 new lesions 1-2 cm range, triggers abdominal MRI, has enlarged liver 21 cm, hepatic steatosis, cysts. June 2024 has acute right side lower back pain, goes to ED, they say its musculoskeletal. A year later May 2025 goes back to Yemen, develops abdominal discomfort, then resolves. Oct 2025 develops day of severe diffuse abdominal pain, fever, admitted with wbc elevated, eosinophil 100, liver enzymes normal. CT shows multiple cysts 6.5 x 5 cm, with small internal cysts, few have internal enhancing curvilinear serpiginous material. Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- 4 weeks ago58 min
TWiP 289: Dogs, Parasites, and an Exhausted Immune System
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 Christina Naula Subscribe (free): Apple Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Single immune cell atlas of canine leishmaniosis (iScience) Clinical staging in CanL (LeishVet) TWiP study – information and survey Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Sep 21, 20261h 7m
TWiP 288: Taco Bell and the Case of the Runny Jobbies
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 Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Letters read on TWiP 288 Parasite of the month – Parelaphostrongylus tenuis — meningeal worm (brainworm) Wikipedia entry P. tenuis in ruminants (Food Animal Pract) P. tenuis in white-tailed deer (Int J Parasitol Parasites and Wildlife) TWiP study – information and survey New Case Early teen, otherwise healthy, develops rash, for a few weeks, problem at night. All over the body. Helps with backyard chicken coop, plays with chickens. Dad looks through bedding, finds tiny red mobile things. Suggest changing bedding, tell teen not to help with chickens. Then rash disappears in a few days. Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Sep 8, 202646 min
TWiP 287: A Vaccine Against Schistosomiasis? SchistoShield Heads to Phase 2
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 Griffin, and Christina Naula Guest: Mumtaz Y. Balkhi Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server SchistoShield Phase 1 and 1b results (npj Vaccines) TWiP study – information and survey Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Aug 27, 20261h 12m
TWiP 286: Pinworms keep coming back! How to stop reinfection in your home
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 Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Letters read on TWiP 286 Hero – Otto Wucherer TWiP study – information and survey New Case Recent case. Woman in 20s, lives in NYC, goes to urgent care with 3 weeks of significant watery diarrhea, not improving. Otherwise healthy, no travel, works in office in NYC, at some point prior to onset she ate at a Taco Bell. Put on twice a day medication, molecular test of stool confirms diagnosis. Don't know when, or what she ate. Trying to replenish fluid losses. Not immunosuppressed. Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Aug 6, 202652 min
TWiP 285: Why Is Cyclospora So Hard to Contain? Parasitologists Explain the 2026 US Outbreak
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 Christina Naula Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Current Knowledge of Cyclospora cayetanensis (Comp Rev Food Sci Food Safety) TWiP study – information and survey Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Jul 27, 202650 min
TWiP 284: It's not the pork
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 (free): Apple Podcasts, Google Podcasts, RSS, email Links for this episode Join the MicrobeTV Discord server Letters read on TWiP 284 TWiP study – information and survey 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 treatment, got a little better, symptoms returned, treated again, got better, symptoms returned. Got some hard to find testing equipment, and confirm suspicion. Treat once, then again in two weeks. Not any better, still irritation. What do we do? HIV neg, no prior medical issues, no travel. Become a patron of TWiP Send your questions and comments to twip@microbe.tv Music by Ronald Jenkees
- Jul 7, 20261h 0m
TWiP 283: Warming up to cryptosporidiosis
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 this episode Join the MicrobeTV Discord server Impact of climate change on Cryptosporidium (J Inf Dis) Letters read on TWiP 283 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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About This Week in Parasitism
TWiP is a 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.
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