ASTMH member Bobbi Pritt, MD, MSc, DTMH, created a weekly case series so she could share the vast array of endemic and exotic parasites she sees in her daily practice as director of a busy parasitology reference laboratory with learners of all levels. A new case will be posted each week, along with the answer to the previous case. Feel free to write her with your questions, comments, questions and answers: Bobbi Pritt, MD, MSc, DTMH; Director, Clinical Parasitology and Virology, Division of Clinical Microbiology, Mayo Clinic; email at [email protected].