What are the causative agent of plasmodiasis?

The causative agents of plasmodiasis are protozoan parasites belonging to the genus Plasmodium. There are several species of Plasmodium that can infect humans, and each species causes a different type of malaria. The most common species are:

1. Plasmodium falciparum: This species causes the most severe form of malaria, known as malignant tertian malaria. It is responsible for the majority of malaria deaths worldwide.

2. Plasmodium vivax: This species causes vivax malaria, which is the most common form of malaria outside of sub-Saharan Africa.

3. Plasmodium ovale: This species causes ovale malaria, which is a relatively mild form of malaria that is found in West Africa.

4. Plasmodium malariae: This species causes malariae malaria, which is a chronic form of malaria that can cause relapses for years after the initial infection.

5. Plasmodium knowlesi: This species is found in Southeast Asia and can cause a severe form of malaria in humans.