This Week in Parasitism
TWiP is a monthly netcast about eukaryotic parasites. Vincent Racaniello, Dickson Despommier, and Daniel Griffin, science Professors from Columbia University, deconstruct parasites, how they cause illness, and present a case study each episode for your solution.

Daniel and Vincent solve the case of the Haitian Girl Who Failed To Thrive, and visit two studies that address the question of whether infection with Toxoplasma gondii alters human behavior.

Hosts: Vincent Racaniello and Daniel Griffin


Links for this episode:

Case Study for TWiP 134

Woman in 30s, coming in Colorado to be seen, reports foul smelling loose stools multiple times each day, cramping and nausea. Started a few weeks ago. No fever, summer, no unusual travel, skiing up in mountains, hiking, backpacking. Originally from NE, moved to Colorado one year before. Often drinks from streams. Treats water with iodine. On overnight trips pack food and cook on stoves. Sticky stools, trouble wiping clean. Yes, my stools do float. Color, not as dark. Well formed. No medical problems, no surgeries, no allergies. Takes no medications. Lives alone in private home. Drinks beer, no other toxic habits. None of her friends report similar problems. Sexually active, does not always use protection. Physical exam: unremarkable.

Send your case diagnosis, questions and comments to

Music by Ronald Jenkees

Direct download: TWiP134.mp3
Category:Science -- posted at: 7:31am PDT