Blood parasites significantly impact the health of humans, animals, and ecosystems, posing challenges to public health and veterinary sciences. This book provides an in-depth exploration of blood parasite taxonomy, their ecological relationships, and pathobiological effects. It covers parasite life cycles, host interactions, and the latest advances in diagnosis and treatment, highlighting control measures and prevention strategies in diverse settings. This book is an essential resource for researchers, healthcare professionals, and students in parasitology and infectious diseases.