This Week in Parasitism
TWiP is a podcast about the tiny creatures that live in and on us.

Hosts: Vincent RacanielloDickson Despommier, and Daniel Griffin

The TWiP triumvirate solves the case of the Missionary in Kenya, and review the finding of a soldier caste in flatworms that parasitize snails.

Links for this episode:

This episode is sponsored by ASM Agar Art Contest

 Case study for TWiP 106

This week's case comes from an ophthalmologist colleague Florian in Switzerland. Swiss female, early 20s, returns after surfing vacation in northern Africa. Accommodations were rustic, lots of animal and insect exposure, right on the beach. No screens. Had loose stools there, now left eye is bothering her, eyelid swollen, eye red. This happened after return. Thinks she has seen things moving around in her eye. Opthalmologist gave eyedrops, now looking for second opinion. Healthy, no med/surg/allergies, no meds, student lives alone, occasional alcohol. No AIDS. Surfing in Morocco. Lots of insect bites. Little tiny things moving around in eye, on surface when she looks in mirror. All blood work was negative. Florian inspects her eye, surprised to see several tiny mobile objects, headed towards lacrymal ducts. Is able to grab one, about 1 mm long, plucks three off.

Send your diagnosis to

Send your questions and comments to

Direct download: TWiP106.mp3
Category:Science -- posted at: 10:07am PDT