In this episode in the series, Parasites 101, I talk to Parasitology teacher and author of the book, Parasites: Tales of Humanity's Most Unwelcome Guests, Rosemary Drisdelle about the protozoa Cryptosporidiosis (or "Crypto" for short).

Rosemary answers the question, "How common is it", along with discussing the symptoms, risk factors, diagnosis and treatment of the parasite.