Answer: Malignant malaria is caused by Plasmodium falciparum, which is one of the most dangerous human infectious diseases. Plasmodium reichenowi, a chimpanzee parasite with only one isolate previously identified, is the closest known relative of P. falciparum.
Malaria can cause the following signs and symptoms:
Fever
Chills
A general sense of unease
Headache
Vomiting and nausea
Diarrhea
Pain in the abdomen
Pain in the muscles or joints
Fatigue