The workbook is intended for extracurricular and classroom work of students of the specialty 31.05.01 General Medicine, profile General Medicine in a Foreign Language, in practical classes in the discipline «Medical Biology» in the unit «Medical parasitology and ecology». The workbook for each lesson of the unit contains the title of the topic, purpose, questions for preparation and practical tasks for classroom and extracurricular (individual) work, as well as tasks for preparing for the final control work for this unit. The workbook is composed in accordance with the curriculum of the discipline «Medical Biology».