Malaria - the acute protozoal illness, described feverish attacks, an anemia, augmentation of a liver and a lien. Relapses are possible. A source of an infection is only the person sick of a malaria, or a gamete carrier. The infection is transferred by various kinds of mosquitoes.

Etiology, pathogenesis. The malaria of the person is caused with 4 kinds of originators: Plasmodium falciparum - the originator of a tropical malaria, P. vivax - the originator of a tetrian fever, P. ovale and P. malariae - the originator of a quartan malaria. Plasmodiums of a malaria make a complex cycle of development in an organism of the owner and in an organism of a mosquito of a carrier (sporogony).

Signs, current. The incubation interval at a tropical malaria proceeds 6-36 day, at three-day with a short incubation - 7-31 day, with long - 6-14 months, at four-day - 14-42 day. In the beginning of disease the fever can be wrong type (an initial fever), and only later some days are established correct alternating attacks. In current of an attack distinguish the periods of a cold fit, fever and sweat. Attacks arise usually in the morning with the maximal temperature in first half of day. The cold fit comes suddenly and happens "shaking". Its duration 1,5-2 hours. Duration of all attack at a tetrian fever of 68 hours, four-day 12-24 hours, at a tropical malaria an attack long. The period of a cold fit is replaced by fever, and with the beginning of depression of temperature of the patient starts to sweat strongly. Its state of health quickly improves, it is abirritated and often falls asleep. The fever during attacks reaches usually 40°С and above. Already after the first 2-3 attacks there is an expressed augmentation of a liver and especially liens, it is morbid at a palpation.