Protozoa are diverse microscopic, single-celled organisms, some of which can live as parasites and cause disease in humans.
Protozoa are found in many environments, including soil, freshwater, marine environments, and the bodies of other organisms. Some are harmless or beneficial, while others are infectious parasites.
Examples of disease-causing protozoa include Plasmodium, which causes malaria, and Giardia, which can cause giardiasis. Protozoal infections can affect different organs and may be transmitted through vectors, contaminated food or water, or other routes.
QUICK FACT
Malaria is caused by protozoan parasites of the genus Plasmodium.
COMMONLY CONFUSED WITH
Helminth: Protozoa are microscopic single-celled organisms, whereas helminths are multicellular parasitic worms.
SEE ALSO
- Parasite
- Parasitic infection
- Plasmodium
- Malaria
- Helminth