| | Conditions & Treatments | Infectious Diseases Malaria is caused by what protozoans? Malaria is caused by protozoans of the genus *Plasmodium*. The species that cause malaria in humans are _P. falciparum_, _P. vivax_, _P. ovale_, and _P. malariae_. Infectious Diseases - Related Articles What Is Gastroenteritis? How does angina cause fever? How to Stop Spreading Staph What is The type of resistance that a response to contracting an infectious disease? Is there a cure for yellow fever? Treatments for Worms in Children What to do with a fever and diarrhea?