Parasites need a host to survive and spread. There are three main types, and their symptoms vary. Stay away from others if you have a parasite to prevent the spread.

Parasitic Diseases A–Z Index: More information about specific parasites. A parasite is an organism (a living thing) that lives on or inside another organism. Information for health …

Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi …

Oct 14, 2025 · It is estimated that 3 out of 5 Americans will be affected by parasites at some point in their lives. Learn about the various types of parasites, symptoms, and the sources of …

Feb 4, 2025 · Dr. Khodadadian of Manhattan Gastroenterology explains the 10 signs that you may have a parasite and how to get treatment.

Aug 18, 2025 · We asked experts how parasites are transmitted, what it feels like to be infected, and what you can do to protect yourself.

Jun 13, 2025 · Because parasites interact with other species, they can readily act as vectors of pathogens, causing disease. There are three main classes of parasites that can cause disease …

Parasites cause various diseases and are transmitted to humans most often through the ingestion of contaminated food or water or through the bite of an arthropod.

Nov 17, 2025 · Which Parasites Can Affect Humans? Three main types of parasites infect humans: protozoa, helminths, and ectoparasites. Each has a unique way of spreading, …

Parasites are organisms that live on or inside another organism (the host) and depend on the host for nutrients and survival. Parasitic infections are more common in areas with limited access to …