Plasmodium malariae
Quick Summary
Plasmodium malariae is a genus of parasitic protozoans that cause malaria in humans. This organism infects red blood cells and is transmitted through the bite of female Anopheles mosquitoes.12
P. malariae is one of five species that cause malaria in humans, with P. vivax being the most widespread and P. falciparum causing the most severe symptoms. A characteristic of P. malariae infection is a fever cycle that recurs every 72 hours, known as quartan malaria. Symptoms of malaria can include chills, fever, headache, nausea, and vomiting. The parasites multiply within red blood cells, leading to their destruction and causing the periodic fever attacks.1342
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.

