L5

Sporozoa
• Sporozoa: Plasmodium spp. (Morphology, habitat, epidemiology,
pathogenesis, methods of transmission, diagnosis, control and
treatment).
• Toxoplasma gondii (Morphology, transmission, pathogenesis,
diagnosis, control and treatment).

A:Malaria (Plasmodium species)
a. Plasmodium falciparum causes malignant tertian malaria
b. P. malariae: causes Quartean malaria
c. P. vivax: causes benign tertian malaria
d. P. ovale: causes benign tertian malaria
Malaria is an acute infectious disease of the blood, caused by one of four species of the protozoal genus,. P. falciparum accounts for some fifteen percent of all malaria cases, and P. vivax for Geighty percent of malarial cases.
The plasmodial parasite is transmitted to humans through the bite of a female Anopheles mosquito, or by an infected, blood-contaminated, needle.
Sporozoans reproduce asexually in human cells by a process called schizogony, in which multiple nuclear divisions are followed by envelopment of the nuclei by cell walls DE3WSXreproduction occurs in the mosquito, where new spores (sporozoites) are formed process called sporogony. Schizogony (asexually in human; intermediated host), sporogony (Sexual reproduction in the mosquito; definitive host).