Welcome to Principles of Parasitology, a comprehensive textbook designed to explore the fascinating world of parasitic organisms and their interactions with hosts. Parasitology is a dynamic field that spans the spectrum from molecular biology to global public health, encompassing diverse organisms that have evolved intricate strategies for survival and transmission.This textbook aims to provide a thorough understanding of the fundamental principles underlying parasitology, catering to students, researchers, and professionals in various disciplines including biology, medicine, veterinary science, and public health. Whether you are delving into the intricate life cycles of protozoan parasites, the morphological adaptations of helminths, or the epidemiology of vector-borne diseases, this book serves as your guide to unraveling the complexities of parasitic infections.