Final answer:
Parasitic protozoa and helminths are both types of parasites that infect humans and other animals, causing various diseases. They have different transmission methods and pathogenic mechanisms.
Step-by-step explanation:
Parasitic protozoa and helminths are both types of parasites that infect humans and other animals, causing various diseases.
Parasitic protozoa are single-celled organisms that can be transmitted through contaminated food, water, or insect bites. They have diverse pathogenic mechanisms and can affect different organs in the body. On the other hand, helminths are multicellular worms that live as parasites in the host's intestines or other organs.
They can be transmitted through ingestion of contaminated food or water, or through contact with infected animals. Helminths have complex life cycles and can cause a variety of diseases in humans.