Parasites are quite common in humans worldwide, with over 30% of the global population affected by some form of parasitic infection, such as the roundworm Ascaris lumbricoides. Intestinal parasites like roundworms, pinworms, hookworms, and tapeworms are prevalent, especially in areas with limited access to clean water and sanitation. Protozoan parasites, helminths (worms), and ectoparasites (like lice and mites) are the main types of parasites that infect humans. Many infections can be asymptomatic, but some cause disease and symptoms depending on the parasite type and infection site. Parasitic infections continue to be a major public health issue worldwide.