Parasitology teacher and writer and the author of the book, Parasites: Tales of Humanity's Most Unwelcome Guests, Rosemary Drisdelle joined me on the episode to discuss the soil-transmitted helminth, the giant intestinal roundworm--Ascaris lumbricoides.

Today's episode will be the first of a series of podcasts I'd like to call Parasites 101, which we'll try to on a weekly basis.