Parasitic-protozoa-malaria

Parasitic-protozoa-malaria - Parasitic protozoa - malaria...

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Parasitic protozoa - malaria Malaria Malaria . The malarial parasite, Plasmodium , is another protozoan which lives in the blood stream of humans but, unlike the trypanosomes, the parasites enter the red cells and feed on their cytoplasm. The Plasmodium divides repeatedly inside the red cell which eventually bursts, liberating dozens of new parasites into the circulation. Each of these can invade another red cell and undergo the same cycle. When thousands of red cells all burst simultaneously, releasing parasites and their accumulated waste products, the host suffers from a fever. This cycle of feeding, division and release is repeated regularly, so the fever occurs every 48 or 72 hours, according to which of the four species of Plasmodium has become established. The parasites are transmitted from person to person by female mosquitoes of the genus Anopheles , which pierce the skin with their sharp, tubular mouthparts and feed on the blood which they suck from the superficial skin capillaries (see Insects, Mosquito). If the blood so taken contains the malarial parasites, these undergo a complicated series of
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Parasitic-protozoa-malaria - Parasitic protozoa - malaria...

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