This is type of malaria is worldwide in tropical areas. It is predonminatly in red blood cells and people who had been infected with this parasite could relapse as long as 40 years after the initial infection.
Life Cycle[]
The life cycle involves two hosts
Mosquito Vector
1.Sporogonic Cycle
- take in blood meal from and infected individule and injests gametocytes
-zygote is formed
-ookinete formed
-Oocyst formed
-Oocyst ruptures and sporozoites are released
-Sporozoites are injected into the next host during second blood meal
Human Host
2.Exo-erythrocytic Cycle (14-15 Days)
-sporozoites enter liver
-Schizont forms
- Schizont ruptures and enters blood
3. Erythrocytic Cycle (72 hours)
- Immature trophozoite at ring stage
- mature trophozoite
-schizont forms
-schizont ruptures
-more trophozoites infect RBC
OR
-Immature trphozoite at ring stage
-forms male and female Gametocytes
-Mosquito takes blood meal
Physiology[]
The erythrocytic cycle is 72 hours long (Quartan)
There are 6-12 Merozoites/schizonts in the RBC
Trophs often form a ring and are about 1/3 the diameter of the RBC
The trophozoites other compact in a bank like form
Gametocyctes are round or ovoid
The RBC is not enlarged due to the parasite but they do have a faint stippling called "Ziemann's dots"