Q. Which parasite causes malignant subtertian (falciparum) malaria?
Answer: Plasmodium falciparum
Notes: Plasmodium falciparum causes malignant subtertian malaria. It accounts for most severe cases and high mortality globally. It is transmitted by the female Anopheles mosquito. Plasmodium falciparum can lead to cerebral malaria and multiorgan failure. This species is prevalent in sub-Saharan Africa and parts of India. Its erythrocytic cycle is approximately 48 hours with irregular fever spikes. Resistance to some antimalarials has been documented.